Combination reactions always:
use only one reactant
require oxygen gas
involve an element and an ionic compound
form only one product

Answers

Answer 1

Answer:

require oxygen

Explanation:


Related Questions

which of the following is a property of acids
A. they are slippery
B. They taste bitter
C. They react with oils
D. they are sour

Answers

Answer:

They are sour. =)

Explanation:

I'd say D, they're sour

Where are both earthquakes and volcanoes common?

a) in the earth’s interior
b) at transform fault boundaries
c) at focal points
d) at subduction zones

Answers

Answer: at transform fault boundaries

PLEASE HELP
Why can you not create a Punnett square to determine the height of an individual?

Answers

Answer:

Punnett squares do not provide accurate predictions on the distribution of phenotypes in offspring. ... This makes it difficult to make predictions regarding Down's syndrome since it cannot predict the prevalence of the offspring's genotypes about a population.

Explanation:

Limitations of Punnett squares as models of inheritance include the lack of information about likely variation in small samples such as individual families and the lack of information about population prevalence of parental genotypes (so no predictions can be made about population prevalence of offspring genotypes.

Directions: Each set of lettered choices below refers to the numbered statements immediately following it. Select the one lettered choice that best fits each statement. A choice may be used once, more than once, or not at all in each set. The following questions refer to the below molecules: (A) CO2 (B) H2O (C) CH4 (D) C2H4 (E) PH3 The molecule that has trigonal pyramidal geometry

Answers

Answer:

The given molecules are:

(A) CO2 (B) H2O (C) CH4 (D) C2H4 (E) PH3

Which one has trigonal pyramidal geometry?

Explanation:

According to VSEPR (valence shell electron pair repulsion) theory, a molecule with a central atom having hybridization sp3 and with one lone pair of electrons has trigonal pyramidal geometry.

Among the given molecules,

CO2 has central atom carbon with sp hybridization without lone pairs.

So, it is a linear molecule.

H2O, the central atom is oxygen with sp3 hybridization and oxygen has two lone pairs. So, its geometry is V-shape or bent.

CH4 has central atom carbon with sp3 hybridization and no pairs.

So, its geometry is tetrahedral.

C2H4 ethene has carbon atoms as the central atoms with sp2 hybridization and carbon has no lone pairs.

So, its geometry is trigonal planar.

Answer:

PH3 has central atom P with sp3 hybridization.

P has one lone pair on it.

Hence, the geometry of PH3 is trigonal pyramidal.

Which of the following most likely happens when the number of particles of a gas decreases?

The pressure of the gas increases.
The pressure of the gas remains same.
The number of collisions of gas particles decreases.
The number of collisions of gas particles remains same.

Answers

Answer: C. The number of collisions of gas particles decreases

Explanation: As temperature decreases so does everything else same with increase.

When the number of particles of a gas decreases the pressure of the gas increases.

Factors affecting has pressure

In a container containing has molecules, they move about freely in the container but the pressure it exerts on its container depends increase of decrease of the has molecules by volume.

If the volume of a container is decreased, the gas molecules have less space in which to move around. As a result, they will strike the walls of the container more often and the pressure increases.

Therefore, when the number of particles of a gas decreases the pressure of the gas increases.

Learn more about gases here:

https://brainly.com/question/25736513

How would the balloons interaction with each other change if the balloons were moved further apart? Explain.

Answers

Explanation:

It is known that like charges repel each other and unlike charges attract each other.

As the balloons are facing each other with like charges so they will repel each other. Hence, they will move apart.

But when balloons were moved further apart then interaction between them will decrease and then there will be no force of repulsion or force of attraction.

What do you notice about the distance between the terrestrial planets compared with the spacing between the gas giants

Answers

Answer:

The spacing between the terrestrial planets is less than that between the gas planets.

Explanation:

Since the terrestrial planets which are Mercury, Venus, Earth and Mars have a distance of 0.4 AU, 0.7 A.U, 1.0 AU and 1.5 A.U respectively from while the gas planets which are Jupiter, Saturn, Uranus and Neptune have a distance of 5.2 AU, 9.6 AU, 19.6 AU and 30 AU respectively from the sun, we can see that the spacing between the terrestrial planets is much smaller than the spacing between the gas planets.

For example, the spacing between Mercury and Venus is 0.7 AU - 0.4 AU = 0.3 AU while that between Earth and Venus is 1.0 AU - 0.7 AU = 0.3 AU.

Also, the spacing between Earth and Mars is 1.5 AU - 1.0 AU = 0.5 AU.

Also too, the spacing between the gas planets is shown below  the spacing between Jupiter and Saturn is 9.6 AU - 5.2 AU = 4.4 AU while that between Uranus and Saturn is 19.6 AU - 9.6 AU = 10.0 AU.

Also, the spacing between Neptune and Uranus is 30 AU - 19.6 AU = 10.4 AU.

Thus, we can see that the spacing between the terrestrial planets is less than that between the gas planets.

Note that AU means astronomical unit and 1 AU is the distance between the Earth and the Sun. 1 AU = 1.50 × 10⁸ km

Do you think it matters if you
report 150 grams as 150
grams or 150.0 grams? Do
they mean the same thing?
Why or why not?

Answers

Answer:

yes I do think they mean the same thing

Explanation:

150 grams and 150 grams is the same thing and adding 0 to the end of a decimal does not change its value, you could even put 150.0000000 grams and it would still be equivalent to the other numbers

what's the chemical formula for salt, like is it NaCl??
the salt we eat???????​

Answers

yeah it's NaCl, I just looked it up

Answer:

Yes

Explanation:

NaCl is table salt

Also known as sodium chloride

How many Group 17 elements are in Period 3 of the Periodic Table? A) 1 B) 2 C) 3 D) 4

Answers

Answer: A (1)

I hope that helps :)

6. Which of the following represent kinetic energy? *
(1 Point)
the water behind a dam
O a boulder hug from a net over a pit
a calculator falling to the floor
the string on a bow before being released

Answers

Answer:

weter

Explanation:

what is quantum physics​

Answers

Quantum physics is the branch of physics concerned with quantum theory.

Given the translation (0,5), translate ordered pairs (9, 0) and (2,-4).

Answers

Answer:

(9,5) and (2,1)

Explanation:

Q.does salt make water boil at a higher temperature?

Answers

Answer:

Yes

Explanation:

The salt increases the boiling point, meaning it make water boil at a higher temperature, and it decreases the specific heat capacity, meaning it will heat up quick.

What is the state of HNO3 in the reaction? HNO3 (g) --> NO2 (g) + 2 H2O (1) 1 point
+ O2 (g)
gas
liquid
aqueous

Answers

Answer:

gas

Explanation:

the answer is right in the question (g) stands for gas.

Cuantos moles de CO2 se requieren para reaccionar con 2 moles de Ba (OH)2

Answers

Answer:

hola soy jess, tu respuesta esta aqui

¿cuantos moles de CO2 se requiere para reaccionar 2 moles de Ba(OH)2

2 mol Ba(OH)₂ × \frac{1molCO_{2} }{1molBa (OH)_{2}}

1molBa(OH)

2

1molCO

2

= 2 moles CO₂

Explanation:

espero que pueda ayudarte

hermana/hermano

lo que

hahahaha

If you have 3 moles of a gas at a pressure of 2.5 atm and a volume of 8 liters, what is the temperature?
a. 57.86 K
b. 0.81 K
c. 25 K
d. 81.26 K

Answers

Answer:

d

Explanation:

pv=nrt

2.5×1.01×10^5×8×10^-3=3×8.31×T

T=

The value of the temperature can be determined by ideal gas law and the temperature will be 0.81 K.

What is temperature ?

The average kinetic energy of particular atoms and molecules in a system is measured by the temperature.

What is ideal gas Law?

Ideal gas law explain the relationship between pressure. temperature and volume.

Ideal gas law can be expressed as, PV=nRT.

where, P is pressure. V is volume , n is number of moles ,R is gas constant and T is temperature. It is given that, n= 3 mole, P = 2.5 atm, V = 8 L, T=?, R = 8.31.

Calculation of temperature by using ideal gas law is shown as:

Now, put the values of given data in ideal gas law equation.

T = PV/nR

=2.5×8/3×8.32

= 0.81 K

Therefore, the temperature will be 0.81K.

To know more about ideal gas law and temperature click here.

https://brainly.com/question/13821925.

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Help needed asap, I will mark the brainiest tomorrow after homework is graded (PLEASE NOT FUNNY BUSINESS)​

Answers

Answer:

Oh my gosh

dis one pass me

Is lotion pure or impure?

Answers

Answer:

Pure

Explanation:

Lotion is pure. Hope this helps!

Answer:

I think pure

hope this helps

have a good day :)

Explanation:

Why do scientists use scientific notation? A. It provides an easier way to write the element names. B. It provides an easier way to write chemical formulas. C. It provides an easier way to write scientific words. D. It provides an easier way to write very large and very small numbers.

Answers

Answer:

D

Explanation:

Scientists will use a scientific notation because, it provides the easier way to write a very large and very small numbers. Option D is correct.

Scientists use scientific notation to express numbers that are extremely large or small. Scientific notation allows for a more concise representation of these numbers by expressing them as a product of a coefficient and a power of 10.

For very large numbers, scientific notation makes it easier to handle and compare values. It allows scientists to focus on the significant digits and the scale of the number without having to write out all the zeros. It also simplifies calculations and reduces the chance of errors when dealing with such large values.

Similarly, for very small numbers, scientific notation provides a convenient way to express values without writing out a large number of decimal places. It allows scientists to express the magnitude of the number in a concise manner and enables easier comparison and calculations with other values.

Scientific notation is widely used in scientific fields such as physics, chemistry, astronomy, and engineering, where dealing with numbers of varying magnitudes is common. It provides a standardized and efficient way to represent and work with very large and very small numbers.

Hence, D. is the correct option.

To know more about scientific notation here

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Lussac's Law, the pressure of a gas increases due to an increase in temperature because Group of answer choices the molecules strike the walls of the container more often. there is an increase in the number of gas particles. there is a decrease in the volume of the container. the molecules get bigger. the molecules strike the walls of the container less often. PreviousNext

Answers

Answer:

the molecules strike the walls of the container more often.

Explanation:

The pressure of a gas refers to the force per unit area exerted on the walls of container by gas molecules.

Since the average kinetic energy of gas molecules increases as the temperature of the gas increases, the molecules of the gas tend to strike the walls of the container more often as the temperature of the gas increases.

Hence, the pressure of a gas increases due to an increase in temperature because the gas molecules strike the walls of the container more often.

Enzymes are proteins that speed up chemical reactions in the body.
How do they work?

A) They provide a path with lower activation energy.
B) They increase the concentration of reactants.
C) They decrease the concentration of products.
D) They increase the surface area of reactants.

Answers

Answer:

D. They Increase the surface area of reactants.

Explanation:

And why I say the answer is  D, Because  Enzymes are soluble protein molecules that can speed up chemical reactions in cells

When Enzymes are proteins that speed up chemical reactions in the body so here it increase the surface area of reactants. hence, option d is correct.

What are enzymes?

It is the substance that is treated as the catalyst in the living organism.

In this, the biological process arises within the living organism are considered to be the chemical reactions.

Also, enzymes should be soluble protein molecules that speed up the chemical reaction in cell.

hence, the option d is correct.

learn more about an enzyme here: https://brainly.com/question/19346597

Compare the following in the three states of matter
a) inter particle space
b)inter particle force of attraction
c)particle motion

Answers

Explanation:

Anything that occupies space and has mass is called matter.

(a) Inter particle space

Solids - Atoms of a solid substance are closely packed with each other due to which there is very less or no inter particle space.Liquids - Atoms of a liquid are little loosely packed due to which there is some inter particle space.Gases - Atoms of a gas are very loosely packed due to which there is large inter particle space.

(b) Inter particle force of attraction

Solids - Atoms of a solid are attached to each other by strong force of attraction.Liquids - Atoms of a liquid have slightly less force of attraction as compared to a solid substance.Gases - Atoms of a gas have Vander waal forces. Hence, there is no inter particle force of attraction between atoms of a gas.

(c) Particle motion

Solids - There is low or negligible particle motion between atoms of a solid.Liquids - There is high particle motion as compared to that present in a solid.Gases - There is very high particle motion as compared to solids and liquids.  

1. Tyrone is riding his newly bought motorcycle at 30 m/s when he sees a cat on the road ahead. He applied immediately the brakes and comes to a stop in 3.0 s. What was the acceleration of his motorcycle?

Given:

Asked:

Solution:

Final Answer:

2. A jeepney speeds up from 50 km/h to 60 km/h to overtake a truck. If this requieres 20 s, what is the (a) acceleration and (b) distance traveled by the car?

Given:

Asked:

Solution:

Final Answer:

Pls help​

Answers

Answer:

1. a = -10 m/s²

2. a = 1.8 × 10³ km/h²; s = 0.31 km

Explanation:

1.

Given:

Initial speed (u): 30 m/s

Final speed (v): 0 m/s (rest)

Time elapsed (t): 3.0 s

Asked:

Acceleration (a)

Solution:

We will use the following expression.

a = (v-u)/t = (0 m/s - 30 m/s)/3.0 s = -10 m/s²

Final Answer:

a = -10 m/s²

2.

Given:

Initial speed (u): 50 km/h

Final speed (v): 60 km/h

Time elapsed (t): 20 s

Asked:

(a) Acceleration (a)

(b) Distance traveled (s)

Solution:

(a) First, we will convert the time to hours.

20 s × 1 h/3600 s = 0.0056 h

Then, we will use the following expression.

a = (v-u)/t = (60 km/h - 50 km/h)/0.0056 h = 1.8 × 10³ km/h²

(b) We will use the following expression.

s = u × t + 1/2 × a × t²

s = 50 km/h × 0.0056 h + 1/2 × 1.8 × 10³ km/h² × (0.0056 h)² = 0.31 km

Final Answer:

a = 1.8 × 10³ km/h²

s = 0.31 km

How does anatomy provide evidence for evolution?

I'll give brainlist!! Simple answer please.

Answers

Anatomical evidence of evolution focuses on similarities and differences in the body structures of different species. ... Similarities in anatomical structures of different species signify that the two species have a relatively recent common ancestor.

An oil may be converted into a substance that is solid at room temperature by Group of answer choices adding hydrogens, decreasing the number of double bonds in the molecules. cooling it, so that double bonds form and the fats solidify. removing water, causing a dehydration synthesis reaction to occur. removing hydrogens, increasing the number of double bonds in the molecules.

Answers

Answer:

Adding hydrogens, decreasing the number of double bonds in the molecules.

Explanation:

Hydrogen is a catalyst, which means that it accelerates or speeds up the velocity of a chemical reaction, by adding hydrogens to oil it will decrease the number of double bonds in the molecules which will make it solidify over time.

Oil + hydrogen creates substances that are solid at room temperature.

What is Photosynthesis?​

Answers

Answer:

Photosynthesis is the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Photosynthesis is a process by which plants and other organisms, such as algae, convert solar energy into chemical energy and use it to produce organic molecules. Photosynthesis is the main source of energy in the biosphere.

what form of energy does a glue gun produce when turned on?​

Answers

the answer is heat.

To use a glue gun, it has to use heat to heat up so that it can melt the glue.

What is the term for the repeating pattern in a crystalline structure?
a) Repeating pattern
b) Base pattern
c) Unit cell
d) Primitive pattern

Answers

Answer:

Because a crystalline solid consists of repeating patterns of its components in three dimensions (a crystal lattice), we can represent the entire crystal by drawing the structure of the smallest identical units that, when stacked together, form the crystal. This basic repeating unit is called a unit cell.Aug 12, 2020

HURRRY PLS!!
Glycolysis is a ten-step process that breaks down glucose into

A)

NAD+.

B)

two molecules of pyruvate.

C)

ATP.

D)

FAD.

Answers

I think it is A I hope this helps

Answer:

B. Two molecules of pyruvate.

Explanation:

Trust me. I got it RIGHT!

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John has 8 cards that spell the word H O M E W O R K. He shuffles them and then places them face down. Assume he returns the card on each occasion. a) What is the probability that he will choose the letter O? 21. Imagine that you cannot find the remote control for your TV. How would you ask your friend Marie where it is?22. Answer the following question using the hint in parentheses.Qu'est-ce qu'il y a la tlvision ce soir? (a documentary about French cooking)23. Answer the following question in French in the affirmative. Remember to use the pass compos.Did you watch the newscast last night?24. Unscramble the following words to compose a complete sentence. Remember to conjugate the verb.centre / faire / Julie / lche-vitrines / du / commercial / dans / un25. Answer the following question using the hint in parentheses.O est-ce que vous tes alls hier soir? (to the movie theatre)26. 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Its likely dividend payout and end-of-year price depend on the state of the economy by the end of the year as follows: Dividend Stock price Boom $3.00 $60 Normal economy 1.20 58 Recession .75 49 Calculate the expected holding-period return and standard deviation of the holding-period return. All three scenarios are equally likely. Which of the following relations is correct for exothermic and endothermic reactions? A company manufacturing KMnO4 wants to obtain the highest yield possible. Two of their research scientists are working on a technique to increase the yield. Both scientists started with 50.0 g of manganese oxide (MnO2). What is the theoretical yield of potassium permanganate when starting with this 50.0 g MnO2? The equation for the production of potassium permanganate is as follows: 2 MnO2 + 2 KOH + O2 2 KMnO4 + H2 You must show all work to receive full credit. plsplspls help it's due today and is needed for reports. 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What is the area of therectangle when x = 3 feet?a. 51 square feetb. 60 square feetc. 66 square feetd. 84 square feet