Reaction rate describes the blank
of a chemical reaction

Reaction Rate Describes The Blank Of A Chemical Reaction

Answers

Answer 1

Answer:

Explanation:

Likewise, the rate of a chemical reaction is a measure of how much reactant is consumed, or how much product is produced, by the reaction in a given amount of time. The rate of reaction is the change in the amount of a reactant or product per unit time.


Related Questions

Write a balanced chemical equation for the reaction that occurs when Mg(s) reacts with Cl2(g).

Answers

Explanation:

When magnesium reacts with chlorine then it forms magnesium chloride.

Equation -

Mg + Cl₂ → MgCl₂

This is the example of Combination reaction.

How many moles are in 1.204 x 1024 atoms of Zn ?

Answers

Answer:

2 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\ [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{1.204 \times {10}^{24} }{6.02 \times {10}^{23} } \\ [/tex]

We have the final answer as

2 moles

Hope this helps you

3 electron layers in the electron shell and 1 electron in the last electron layer​

Answers

Answer:

The closest shell to the nucleus is called the "1 shell" (also called the "K shell"), followed by the "2 shell" (or "L shell"), then the "3 shell" (or "M shell"), and so on farther and farther from the nucleus.

Two trays of lasagna are identical except for their thermal energies.
Which tray of lasagna has a lower temperature?

Answers

Answer:

the one with less thermal energy

Explanation:

thermal energy is heat

Answer:

GOTTTEM

Explanation:

A chemical formula (such as H20) can be considered a type of model.
O True
O False

Answers

Answer:

it is false it cannot be a model


As Mia mixed two substances in a test tube, she noticed that the test tube became warm. She also noticed gas coming from the test tube. Based on Mia's observations, what was most likely occurring inside the test tube?
A.The two substances underwent a physical change
B.The two substances were melting
C.A new substance was forming
D.A change in the mass of the two substances

Answers

Answer:

a new substance was forming

Explanation:

If 3.0 moles of hydrogen react, how many grams of nitrogen will be used? Round your answer to the nearest whole number. N2 + 3H2 -> 2NH3

Answers

Answer:

28g

Explanation:

Given parameters:

Number of moles of hydrogen  = 3moles

Unknown:

Mass of nitrogen used = ?

Solution:

 To solve this problem, let us establish the balanced reaction equation first;

             N₂  + 3H₂ →  2NH₃

From the balanced reaction equation;

                 3 mole of H₂ will combine with 1 mole of N₂

                 

Now,

   Mass of Nitrogen  = number of moles x molar mass

         Molar mass of N₂  = 2(14) = 28g/mol

   Mass of Nitrogen  = 1 mole x 28g/mole  = 28g

Why are gamma rays not able to reflect off a mirrors surface

Answers

Answer:

the Ray's go right through it

Explanation:

the Ray's are so small they punch right through them

Answer:

Explanation:

The reason why is based in something called the plasma frequency of the metal of a mirror. A metal, as you may know, is composed of a series of atom (ion, effectively) cores - nuclei, together with some, but not all, of their bound electrons - which contribute the remaining outermost electrons of their unbound forms to a communally shared "electron sea" - kind of like a giant, distributed omnidirectional covalent bond that extends all throughout the whole metal crystal (here we're just considering a single crystal for simplicity). The electrons are quantumed out all over the full extent of the crystal and effectively form a sort of "gas" throughout and permeating the metal.

When an electromagnetic wave approaches that gas, the free charges within it - the electrons - start oscillating, and as they do so, they set up another wave going outward at the same time as the first is going in. This begins as soon as the first wave begins to impinge.

However, if the wave oscillation is fast enough, the electrons can't keep up due to their mass, and thus they are unable to form the reflected wave. The frequency at which this occurs is called the metal's plasma frequency (and is inversely proportional to the square root of the mass, so that a high mass particle would have a lower plasma frequency). The name comes from the fact that the metal can be thought of in a sense as a kind of "solid plasma" - ions with free electrons, the difference with what most people think of as a "plasma" being here the ions are not free to move about of their own accord.

Directions: Click the link here to access an interactive simulation where you will explore w hat happens when you change the concentration of different ionic compounds. Complete the steps below and answer the questions. 1. Drag the concentration meter (the purple circle attached to a wire) into the water and select the solute cobalt (II) chloride (CoCl2). 2. Move the shaker continuously to add cobalt (II) chloride until the concentration is 4.330 mol/L. How would you classify this solution? 3. What happened to the color of the solution as you added more of the ionic compound? 4. Tap the faucet to add another 0.5 L of water, bringing the total volume of the solution. When you doubled the water volume, what happened to the concentration? How would you now classify this solution? 5. Complete a similar process for two other ionic compounds. Experiment with different amounts of the ionic solute and the water solvent to observe the changing concentrations.

Answers

Answer:2:saturated

3:it got darker

4:it halved/unsaturated

Explanation:

Answer:

Answer:2:saturated

3:it got darker

4:it halved/unsaturated

Explanation:

How many moles are in a 111.5 gram sample of sodium chloride, NaCl?

Answers

Answer: 1.91 moles

Explanation:

First you want to find the molar mass of NaCL

Na = 22.99g  Cl = 35.45g

22.99g + 35.45g = 54.44g

Then divide 111.5g by 54.44g and this will give you moles.

be strong

Hey now, life is every minute
All or nothing
Living on the limits
Hey now, I will sing it loud and sing it strong
Let the echo decide if I was right or wrong
tie your shoe lace get prepared for a race
And a very few feel burn,
And the rest, they may live and learn!
but who knows the world hurts and theres different parts yeah be strong.

Answers

Nice written.

Is it written by you yourself or you have copied it from somewhere?

What is required for two atoms to share electrons equally in a chemical bond?
A. The two atoms must have the same number of valence electrons.
B. The two atoms must have equal and opposite charges.
C. The two atoms must be of the same element.
D. The two atoms must both be nonmetals.

Answers

Answer:

C. the two atoms must be of the same element

start out as one kind of rock, but large amounts of pressure and heat change them into a different kind.

Answers

Answer:

Metamorphic

Explanation:

The reusable booster rockets of the space shuttle use a mixture of aluminum and ammonium perchlorate as fuel. A possible reaction is

3Al (s) + 3NH4ClO4 (s) = Al2O3 (s) + AlCl3 (s) + 3NO (g) 6H2O (g)


Calculate the delta H for this reaction.

Answers

ΔH for this reaction : -2668.4 (exothermic)

Further explanation  

The change in enthalpy in the formation of 1 mole of the elements is called enthalpy of formation  

The enthalpy of formation measured in standard conditions (25 ° C, 1 atm) is called the standard enthalpy of formation (ΔHf °)  

(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)  

The value of ° H ° can be calculated from the change in enthalpy of standard formation:  

∆H ° rxn = ∑n ∆Hf ° (product) - ∑n ∆Hf ° (reactants)  

you can search the value of ΔHf on the internet

∆H ° rxn =( ∆H Al₂O₃+∆H AlCl₃+3.∆H NO + 6.∆H H₂O)-(∆H Al+∆H NH₄ClO₄)

[tex]\tt \Delta H^o~rxn=(-1669.8+-704+(3\times 90.4)+(6.\times -241.8)-(3\times 0+3\times -295)\\\\\Delta H6o~rxn=-3553.4+885=-2668.4~kJ/mol[/tex]

If you have more protons in the nucleus, do you think they hold onto electrons tighter or looser?

Answers

Answer:

If we have more protons in the nucleus, then they hold it tighter

If a wave has low energy it therefore, it has ___________ frequency.

Answers

Answer:

I think it would have a LOW frequency rate.

Explanation:

It had low frequency

If 15.0 g of nitrogen reacts with 15.0 g of hydrogen, 10.5 g of ammonia is
produced. What is the percent yield?

Answers

Answer:

Percent yield =  57%

Explanation:

Given data:

Mass of nitrogen = 15.0 g

Mass of hydrogen = 15.0 g

Mass of ammonia produced = 10.5 g

Percent yield = ?

Solution:

Chemical equation:

N₂+ 3H₂      →   2NH₃

Number of moles of hydrogen:

Number of moles = mass/molar mass

Number of moles = 15.0 g/ 2 g/mol

Number of moles = 7.5 mol

Number of moles of nitrogen:

Number of moles = mass/molar mass

Number of moles = 15.0 g/ 28 g/mol

Number of moles = 0.54 mol

Now we will compare the moles of ammonia with nitrogen and hydrogen from balance chemical equation.

              N₂       :        NH₃

               1         :          2

           0.54       :     2×0.54 = 1.08

             H₂         :           NH₃

              3           :            2

              7.5        :      2/3×7.5= 5 mol

Theoretical yield of ammonia:

Mass = number of moles × molar mass

Mass = 1.08 × 17 g/mol

Mass = 18.36 g

Percent yield:

Percent yield = (actual yield / theoretical yield) ×100

Percent yield = (10.5 g/ 18.36 g) ×100

Percent yield = 0.57 ×100

Percent yield =  57%

Use the activity series below to predict whether the following reactions will take place. Activity series from most to least reactive: Upper F Subscript 2; Upper C l Subscript 2; Upper B r Subscript 2; Upper I Subscript 2. Cl2 + 2RbI → 2RbCl + I2 yes no I2 + NiBr2 → NiI2 + Br2 yes no

Answers

Cl2 + 2RbI → 2RbCl + I2  is possible while I2 + NiBr2 → NiI2 + Br2 is not possible.

It will do us a lot of good to write out the equations again;

Cl2 + 2RbI → 2RbCl + I2       Yes

I2 + NiBr2 → NiI2 + Br2         No

If we look at the reaction closely, they are displacement reactions. It is worthy to note that a specie can only displace another specie which lies below it in the activity series. The activity series is an arrangement of elements in order of decreasing reactivity.

The activity series of the halogens is; fluorine > chlorine > bromine > iodine.

Since chlorine is above iodine in the activity series, Cl2 + 2RbI → 2RbCl + I2 is possible.

Iodine is less than bromine in the activity series hence the reaction  I2 + NiBr2 → NiI2 + Br2 is not possible.

Learn more: https://brainly.com/question/14365792

Answer:

Cl2 + 2RbI --> 2RbCl + I2 = yes

I2 + NiBr2 --> NiI2 + Br2 = no

Explanation:

I just took the assinment

Why can't antibiotics be used on viruses?​

Answers

It can't be a viruses because it's a antibiotics

The density of a substance having a mass of 9 x 10^5 g and a volume of 3 x 10^-1 cm3 is

Answers

Answer:

3,000,000 g/cm³

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{9 \times {10}^{5} }{3 \times {10}^{ - 1} } \\ [/tex]

We have the final answer as

3,000,000 g/cm³

Hope this helps you

Over the last 800,000 years before humans existed, CO2 levels in the atmosphere have stayed below ________ PPM. Today, CO2 levels are over ________ PPM.
fill in the blanks

Answers

I guess the first blank is either 170 or 280 and second is 450

For the 800,000 years we have records of, average global CO2 levels fluctuated between about 170 ppm and 280 ppm. Once humans started to burn fossil fuels in the industrial era, things changed rapidly.

Regardless of which estimate is correct, it is clear that CO2 levels are now higher than they have ever been in mankind’s history. With global CO2 emissions continuing on an upward trajectory that is likely to put CO2 concentrations above 450 ppm or higher, it is extremely unlikely that the steadily rising shape of the Keeling Curve is going to change anytime soon.

can someone plz help me with science.
Order the items from smallest at the top to largest at the bottom. cell,elephant,human body,school bus,organ,molecule.

Answers

Explanation:

Unordered items;  

          cell, elephant, human body, school bus, organ ,molecule.

This problem deals with the organization of life. We move from cells, to tissues, organs, and then systems.

       Molecule

        Cell

        Organ

        Human body

        Elephant

        School bus

School bus is the largest from the giving items although it is non-living.

                             

Black fit, Gosha, Gosha, gold fangs (Gold fangs)
Long clip, Gosha, Gosha, bang, bang (Bang, bang)
Black fit, Gosha, Gosha, gold fangs (Gold fangs)
Long clip, Gosha, Gosha, bang, bang (Bang, bang)
Black fit, Gosha, Gosha, gold fangs (Gold fangs)

[Outro]
Ayy

Answers

Answer:

Gosha Gosha

Explanation:

‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎

The nervous system sends messages to control activities in the body. false true

Answers

It controls activities that are not under your control so it’s true

Answer:

true

Explanation:

took test

What is manganese dioxide in preparation of oxygen?

Answers

Answer:

When manganese(IV) oxide is added to hydrogen peroxide, bubbles of oxygen are given off. To make oxygen in the laboratory, hydrogen peroxide is poured into a conical flask containing some manganese(IV) oxide. The gas produced is collected in an upside-down gas jar filled with water.

plz help thx brainliest btw :)

Answers

Answer:

1. earth metal 2. halogen 3.The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups. ... Elements in the periodic table are organized according to their properties.

Inventor: Dmitri Mendeleev please name most brainliest

i’m gonna answer so you can mark the person above brainliest.

Biochemistry which studies the chemical composition, structure, and the reaction of compounds found in non-living organisms.
Select one:
True
False

Answers

Inorganic chemistry studies the chemical compounds in inorganic, or non-living things such as minerals and metals.

The answer to this is true.

The rate of a reaction depends on temperature, concentration, particle
size and catalysts. Which statement is not correct?

Answers

Answer:

I think the particle size

Explanation:

By decreasing the particle size of a reactant, we are increasing its surface area. The greater the surface area, the higher the chance of collisions, thus the faster the rate of reaction.

increasing the particle size will decrease the rate of reaction.

conclusion:

The smaller the particle size the faster the reaction.

The statement which is not correct is that: the rate of a reaction increases with increasing particle size.

Discussion;

The addition of catalyst, increase in temperature and reactant concentration all are factors which increase the rate of a chemical reaction.

Decreasing the particle size of reactants also increases the rate of reaction. This is because upon decreasing particle size, the surface area of the reactants is increased and the reaction is able to take place at a faster rate.

Read more on rate of reaction;

https://brainly.com/question/24795637

is disilicon tetraoxide held together by a covalent or polar covalent?

Answers

Explanation:

The compound disilicon tetraoxide has the formula;

        Si₂O₄;

 This compound is held together by a polar covalent bond. A polar covalent bond occurs between two species that shares electrons. In this bond type, the more electronegative element draws the shared electrons more closer to itself.

Oxygen is more electronegative than silicon. It will draw the shared electrons more closer. This leaves a partial positive charge on the silicon and a negative charge on the oxygen.

HELLLLP ASAP PLZ
1. A front forms when ____

A. two air masses move away from each other


B. two air masses bump into each other

2. On a weather map, a red line with half circles shows a(n) ______.

A. occluded front


B. cold front


C. warm front

3. The blue triangles of a cold front point in the direction ______.

A. the front is going


B. the front has come from


C. where the temperature is colder

Answers

Answer:

1 is B, 2 is B a cold front

Explanation:

In order for a front to form, two air masses have to collide, and for 2 a cold front is represented by a red ljine with half circles

Other Questions
C. How much fence would Mr. Brown needto fence the garden? Can someone plz help ? Shipping cotton in the South was difficult, because there were very few major rivers.A FalseB True 5 footballs to 9 baseballs,The ratio of the number of footballs to the number of baseballs is,The ratio of the number of baseballs to the number of footballs is, Which branch of government writes and votes on new laws? Supreme Court Executive Judicial Legislative Will give brainlist please and thank you Marissa bought x shirts that cost $19.99 each and y pairs of shorts that cost $14.99 each. The next day she went back to the store and bought 3 more shirts that cost $19.99 each and 4 more pairs of shorts that cost $14.99 each. Which expression represents the total amount Marissa spent? StartFraction x + 3 over 19.99 EndFraction + StartFraction y + 4 over 14.99 EndFraction StartFraction 3 x over 19.99 EndFraction + StartFraction 4 y over 14.99 EndFraction 19.99 (x + 3) + 14.99 (y + 4) (3 x) 19.99 + (4 y) 14.99 In Triangle JKL, J is congruent to L. Triangle J K L is shown. Ray L K extends beyond point K to form an exterior angle that is labeled sixty-seven and eight tenths degrees. What is the measure of L? Enter the correct answer in the box. To avoid burns, use pot holders or mitts to move hot pots and pans. True or False A school bus uses 3/4 of a tank to drive back and fourth to school in a week with 5 school days. How much gas does the bus use to drive back and fourth to school in a week with 4 school days? The topic is The assassination of Abraham Lincoln , write a short paragraph in your journal explaining what your idea is andhow you plan to cover it. Also, include some ideas for sources you can use when researching your topic.Jot down a potential research question, or maybe even two, to help guide your research. When you'refinished, hold on to the paragraph so you can use it to start planning your essay. Your paragraph shouldbe no more than 100 words, but should be very detailed about your ideas for your topic. If the measure of angle 1 is (3 x minus 4) degrees and the measure of angle 2 is (4 x + 10) degrees, what is the measure of angle 2 in degrees?A horizontal line. A line extends from the line to form a 90 degree angle. Another line cuts through the 2 lines to form angles 1 and 2, which total 90 degrees.32 degrees38 degrees58 degrees66 degrees I need help on making subjunctive sentences in Spanish. Can someone provide me with sentences in Spanish that use subjunctive and are saying Im thankful for.... ex: Im thankful that I have family who love me Which of the following statements describes the act of paying for a specific amount of rice with a specific amount of salt? IF YOU ANSWER FIRST AND GET IT CORRET YOU GET BRAINLIEST BUT IF YOU ANSWER SECOND AND GET IT RIGHT AND THE FIRST ANSWER WAS WRONG THAN THE SECOND PERSON GETS BRAINLIEST. A. In a monetary system, prices are determined for goods in terms of the amount of other goods necessary to have an equal exchange.B. In a bartering system, two goods are exchanged directly without money because there is no common system of currency.C. In a bartering system, two goods are first valued using a common currency and then D. traded directly based on that value.E. In a monetary system, prices are determined only by the sellers, while the buyers must pay the price determined by the seller. When Bob was 5 years old his brother Fred was 2 years old how old was fred when bob was born how do i solve this problem ? The correct use of tools often confuses people. They find new gadgets difficult to master.use connectors in the sentence. Who were the Philosophes and what did they explore? (Ap world question) In the common lead storage battery used in automobiles, the following two half-reactions occur in acid solution: Oxidation Pb(s)+HSO4(aq) PbSO4(s) Reduction PbO2(s)+HSO4(aq) PbSO4(s). Write a balanced equation for the overall battery reaction. SCINCEEE WORKKK REEE ON AMPLIFY!!! SUM1 PLZ HELP ME