Which property of an ice cube will stay the same after the ice cube is melted?
A. Shape
B. Physical state
C. Mass
D. Texture

Answers

Answer 1

Answer:

C. Mass

Explanation:

Answer 2

Mass
Thanks me later

Related Questions

Writing Chemical Equations


Write and balance the equation showing the reaction between lead (II) sulfide and carbon monoxide to form lead metal and carbon dioxide.

Answers

Answer:Gaseous C4H8 + oxygen gas ---> carbon dioxide + water

C4H8(g) + 6O2(g) ---> 4CO2(g) + 4H2O(g)

Not the one u want but its similar so u can get an idea of what the one u want is like  


Please help !!!

The atomic number of sodium is 11. How many neutrons does an isotope with a mass number of 22 have ?

Answers

Answer: 12 neutrons
Explanation: The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

Answer:

11

Explanation:

What two layers of the earth are made of rock

Answers

Answer: There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly com​posed of basalt.

Explanation:

The crust This is the outside layer of the earth and is made of solid rock, mostly basalt and granite.  Oceanic crust is denser and thinner and mainly com​posed of basalt.

Answer:

The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere .

Explanation:

How many equivalents are in 0.70 mole of Fe 3+?

Answers

I believe the answer you are looking for is 0.40Eq

In your example, you're dealing with a potassium cation,
K
+
. This ion carries a
1
+
charge, so right from the start you know that you're looking for the number of
1

ions, i.e. monovalent ions of opposite charge, needed to neutralize this
1
+
charge.
Since a charge of
1
+
can be neutralized by a charge of
1

, it follows that every mole of potassium cations will produce
1
mole of equivalents in solution.

The number of the ions or the electrons transferable is called the number of equivalents. The number of equivalents of 0.70-mole iron (Fe³⁺) is 2.1 eq.

What is the number of equivalents?

The number of equivalents is the property of the atom, molecule, or compound to transfer its ions or electrons in a chemical reaction. The equivalents can be said to be the moles of the ions with a valency of one to neutralize the oppositely charged species.

The number of equivalents is calculated as,

Number of equivalents = number of moles × valence

Given,

Valency of iron (Fe³⁺) = +3

Number of moles of iron = 0.70 moles

Substituting values above to calculate equivalents as

Number of equivalents = 0.7 × 3

Number of equivalents = 2.1 eq

Therefore, there are 2.1 equivalents in 0.70 moles of iron.

Learn more about equivalents here:

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Enter a numerical expression that represents the sum of u squared and 9, multiplied by eleven

Answers

Answer:

 11(u²  + 9)

Explanation:

The problem is to write a numerical expression for the statement given;

       sum of u squared and 9, multiplied by eleven

Variable given  = u;

             u squared = u²

         Sum;

                     u²  + 9

    multiplied by 11;

                     11(u²  + 9)

There are 20 mice in a 5 m2 field ecosystem. The population density of mice is _____.

20 per m 2
5 per m 2
25 per m 2
4 per m 2

Answers

Answer:

4per m 2

20 mice divided by 5 so it will be 4 per m 2

The volume of a gas with an initial pressure of 380 mmHg atm increases from 5.0 L to 8.0 L. What is the final pressure of the gas, in atm, assuming no change in moles or temperature?
A) 238 atm
B) 2.4 atm
C) 0.31 atm
D) 0.80 atm
E) 8.0 atm

Answers

Answer:

0.31 atm

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

Since we are finding the new pressure

[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]

From the question

760 mmHg = 1 atm

380 mmHg = 0.5 atm

We have

[tex]P_2 = \frac{0.5 \times 5}{8} \\ = 0.3125[/tex]

We have the final answer as

0.31 atm

Hope this helps you

How are ionic compounds named?

Answers

Answer:

Ionic compounds are neutral compounds made up of positively charged ions called cations and negatively charged ions called anions. For binary ionic compounds (ionic compounds that contain only two types of elements), the compounds are named by writing the name of the cation first followed by the name of the anion.

Explanation:

Hope this helps.

Chlorine monoxide accumulates in the stratosphere above Antarctica each winter and plays a key role in the formation of the ozone hole above the South Pole each spring. Eventually, ClO decomposes according to the equation:

Answers

The question is incomplete, the complete question is;

Chlorine monoxide accumulates in the stratosphere above Antarctica each winter 3nd plays a key role the formation of the ozone hole above the South Pole each spring Eventually. CIO decomposes acco to the equation: 2CIO(g) rightarrow CL2(g) + O2(g) The second-order rate constant for the decomposition of CIO is 6950000000 M-1 s-1 at a particular temperature Determine the half-life of CIO when its initial concentration is .0000000185 M

Answer:

7.8 * 10^-3 s

Explanation:

Given that the half life of a second order reaction is obtained from the formula;

t1/2 = k-1[A]o-1

t1/2 = 1/k[A]o

second order rate constant (k) = 6950000000 M-1 s-1

initial concentration ([A]o) =0.0000000185 M

t1/2 = 1/6950000000 * 0.0000000185

t1/2 = 7.8 * 10^-3 s

The phase change between white tin and gray tin is difficult to observe directly. Both substances can be burned, however. From these equations, calculate AHⓇ for the conversion of gray tin into white tin:
Sn(s, white) + O2(g) + SnO2(g) AH = -580.69 kJ
Sn(s, gray) + O2(g) + SnO2(g) AH° = -582.78 kJ
AH = _________ kJ

Answers

Answer: Thus [tex]\Delta H[/tex] for the conversion of gray tin to white tin is -20.9 kJ

Explanation:

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

The final reaction is

[tex]Sn(s, gray)\rightarrow Sn(s, white)[/tex]  [tex]\Delta H=?[/tex]

The intermediate balanced chemical reaction will be,

[tex]Sn(s, gray)+O_2(g)\rightarrow SnO_2(g)[/tex]  [tex]\Delta H^0=-582.78kJ[/tex]    (1)

[tex]Sn(s, white)+O_2(g)\rightarrow SnO_2(g)[/tex]  [tex]\Delta H^0=-580.69kJ[/tex]     (2)    

substarcting (2) form (1) we get

[tex]\Delta H=\Delta H_1-\Delta H_2[/tex]

[tex]\Delta H=-582.78-(-580.69kJ)[/tex]

[tex]\Delta H=-20.9kJ[/tex]

Answer please thanks

Answers

Answer:

7. A. ee

8. Genotypes in which the dominant gene must show: Both A & B

9. Genotypes in which the recessive genes must show: A. aa

how many moles of CO2 are produced from the combustion of 5.25 moles of CH3OH?

Answers

First, we write the reaction for CH3OH combustion

CH3OH+3/2O2--->CO2+2H2O

for 1 mole of methanol, we get 1 mole of CO2, therefore for 5,25 moles of methanol we will get 5,25 moles of CO2

What is nuclear fusion what role does it play in the sun

Answers

Answer:

Nuclear fusion is when two atomic nuclei combine and form one nucleus. Nuclear fusion generates all of the Sun's energy. Inward pulling by the Sun's gravity is counteracted by outward pushing by the Sun's nuclear fusion; this balance keeps the sun from collapsing or exploding.

Explanation:

Answer:

it converts mass into energy and hydrogen into helium.

Explanation:

Nuclear fusion, the source of all the energy so generously radiated by the Sun

Which type of reaction is NaCl + AgNO3 → NaNO3 + AgCl?

synthesis
decomposition
oxidation
replacement

Answers

Answer:

replacement

Explanation:

Atoms are the
piece of an

Answers

Answer:

Our current model of the atom can be broken down into three constituents parts – protons, neutron, and electrons. Each of these parts has an associated charge, with protons carrying a positive charge, electrons having a negative charge, and neutrons possessing no net charge.

A radioactive element having and atomic number 82 and atomic mass 214 emits a beta particle. The resulting element is:______.

Answers

Answer:

[tex]\frac{214}{83} Bi[/tex]

Explanation:

In beta emission, a neutron is converted into a proton thereby reducing the neutron:proton (N/P) ratio.

When a beta emission occurs, the mass number remains the same while the nuclear charge increases by one unit. The daughter nucleus is found one place to the right of its parent in the periodic table.

You have 3.00 L of a 3.12 M solution of NaCl(aq) called solution A. You also have 2.00 L of a 2.00 M solution of AgNO3(aq) called solution B. You mix these solutions together, making solution C.
Calculate the concentration (in M) of Ag+ ions in solution C.

Answers

Answer:

[tex]M=0.8M[/tex]

Explanation:

Hello!

In this case, since the presence of silver ions is in AgNO3 only, we can compute their moles by using the volume and concentration of the corresponding salt:

[tex]n_{Ag^+}=2.00L*2.00\frac{mol}{L}=4molAg^+[/tex]

Next, since the total volume of solution C is 5.00 L, the required concentration of silver ions turn out:

[tex]M=\frac{4.00mol}{5L} =0.8M[/tex]

Best regards!

this is liquid water in the form of droplets that have condoned from atmospheric water vapor and than precipitated

Answers

I think it’s rain???

Which statement about the surface of the moon is true?
o There is water and air, but no life on the moon's surface.
O There is no air, wind, liquid water or life on the moon's surface.
There are liquid seas on the moon's surface.
It is very windy on the moon's surface.



Answers

Answer:

There is no air, wind, liquid water or life on the moons surface.

Explanation:

Answer:

ok i know it wont help now bc this was in 2020 but i did this on my lessons and its: There is no air, wind, liquid water, or life on the moon's surface.

Explanation:

i got all the right except the last one

What is the mass of 1.00 mol of oxygen (O2)?

Answers

Answer:

Mass = 32 g

Explanation:

Given data:

Number of moles of oxygen = 1.0 mol

Mass of oxygen = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of oxygen (O₂) is  32 g/mol

by putting values,

1.0 mol = mass/ 32 g/mol

Mass = 1.0 mol ×32 g/mol

Mass = 32 g

Maria owns a bakery and bakes many different types of yeast breads. One day she notices that the bread she baked is flat and does not contain the air bubbles that are usually present. Which of the following would be a good explanation for what has happened to her yeast? *

Answers

the yeast is probably not activated or old

Answer:

the yeast did not produce the carbon dioxed needed for the bread to rise.

Explanation:

i am not fooly sure but i think its it

but warn me if i am wrong pweez

What is the molar mass of h2

Answers

Answer:

The answer is one

Explanation:

I will just type any rubbish here bcuz my answer should be more than 20 words..... Just know the answer is 1

what are 4 sources of electrical energy?

Answers

Answer:

Clean Energy. Learn more about energy from solar, wind, water, geothermal, biomass and nuclear. Fossil. Learn more about our fossil energy sources: coal, oil and natural gas.Electric Power. Learn more about how we use electricity as an energy source. Energy Storage. Hydrogen & Fuel Cells.

Explanation:

I hope this helps xD

Answer:

Electrical energy is used to power up a light bulb. The current moves from the outlet to the light bulb through the wire.

Lightning is another example of electrical energy. The negatively charged particles are separated from the positively...

Batteries are also sources of electrical energy. In car batteries, the moving charges Explanation:

fI gave u 3 think of the 4th one

Which one of the following
statements about the following
reaction is false?
CH4(g) + 202(g) → CO2(g) +
2H2O(g)

Answers

Answer:

5

Explanation:


If repeated measurements agree closely but differ widely from the
accepted value,
these measurements are

neither precise nor accurate.

accurate, but not precise.

both precise and accurate.

precise, but not accurate.

Answers

Answer:

precise but not accurate

Explanation:

precision is getting the same answer over and over, but not necessarily correct.

accuracy is getting the exact, or VERY close to exact, value

since the question states the repeated measurements agree closely it is saying it is precise, but when it says differ widely from accepted value it is saying NOT accurate.

Please help, will give brainliest
N2 + 3H2 + 2NH3
Calculate the mass of N, that would be needed to produce from 75.0g of NH3?
Show your work by including all values used to determine the answer.

Answers

Answer:

Mass = 61.6 g

Explanation:

Given data:

Mass of ammonia produced = 75.0 g

Mass of nitrogen needed = ?

Solution:

Chemical equation:

N₂ + 3H₂    →      2NH₃

Number of moles of ammonia:

Number of moles = mass/molar mass

Number of moles = 75 g/ 17 g/mol

Number of moles =  4.4 mol

No we will compare the moles of ammonia with nitrogen.

              NH₃           :          N₂

                2             :           1

               4.4           :          1/2×4.4 =2.2 mol

Mass of N₂:

Mass = number of moles × molar mass

Mass = 2.2 mol × 28 g/mol

Mass = 61.6 g

What is true of all atoms?

Answers

Answer:

Atoms are the building blocks of matter. They are the smallest particles of an element that still have the element's properties. All atoms are very small, but atoms of different elements vary in size. Three main types of particles that make up all atoms are protons, neutrons, and electrons.

Explanation:

Answer:

Atoms are the basic building blocks for life

HELPPPPPPPPP 35 POINTSSSSSS!!!!!FILL IN THE BLANKS with either "reduce" or "oxidize"

Magnesium is able to ——copper, and copper is able to —— magnesium.

Zinc is able to—— magnesium, and magnesium is able to—— zinc.

Copper is able to—— zinc, and zinc is able to—— copper.

Answers

Look at my screenshot:

How many moles are in a sample of 4.57 x 1024 atoms of neon (Ne)?
a.7.59 mol Ne
b.27.5 mol Ne
c.91.4 mol Ne
d.151 mol Ne

Answers

Answer:

A 7.59 mol Ne

Explanation:

The number of moles of Ne in a sample of 4.57 x 10²⁴ atoms of neon (Ne) are 7.59 mol of Ne. Hence Option (A) is the correct option. It can be solved with the help of Mole concept.

What is Mole concept ?

The mole, symbol mol, is the SI base unit of amount of substance.

The quantity amount of substance is a measure of how many elementary entities of a given substance are in an object or sample.

n = given number / Avogadro's number

  = 4.57 x 10²⁴ / 6.022 x 10²³

  = 7.59 mol of Ne

Therefore, The number of moles of Ne in a sample of 4.57 x 10²⁴ atoms of neon (Ne) are 7.59 mol of Ne. Hence Option (A) is the correct option. It can be solved with the help of Mole concept.

Learn more about Mole here ;

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7. Which of the following pairs of elements is most likely to form an ionic
compound?
b. potassium and neon
c. barium and aluminum
a. oxygen and fluorine
d. lithium and bromine

Answers

Answer:

not sure if this us right but oxygen and fluorine? I learned chem but I forgot about it kinda sorry

Other Questions
ten(10) examples of wearables or wearable technologies? Helppp (1) On May 18, 1980, Mount St. Helens sent an explosion of ash, gas, and rock into the sky. This eruption led to the death of 57 people, in addition to permanently changing the surrounding landscape. It is still one of the most disastrous volcanic eruptions in recent history.(2) Mount St. Helens is located in the Cascade Mountain Range in Washington, United States. It is part of the Ring of Fire, an important geological area. This area is home to over 160 active volcanos. Volcanos are active if they have erupted at least once in the last 10,000 years. Mount St. Helens is a stratovolcano. This means it is a steep, evenly shaped cone made of many layers of volcanic rock and ash. These volcanos often have explosive eruptions.(3) Before the eruption of Mount St. Helens, a bulge of rock formed on the northern side of the mountain. Then, early on May 18th, an earthquake occurred that was caused by increasing pressure inside the mountain. This led to a landslide. The force of the landslide collapsed the entire northern side of the mountain, which led to a lateral blast. Lateral blasts occur when volcanos erupt sideways, rather than at the peak. This lateral blast sent rocks flying for miles at high speeds. These blasts destroy forests, buildings, and other structures in a short amount of time. The lateral blast at Mount St. Helens destroyed an area of about 150 square miles. It destroyed forests and left debris in three-inch layers, making the situation even more disastrous.(4) When Mount St. Helens erupted, clouds of deadly ash, volcanic rock, and pyroclastic flows flew outward from the volcano. Pyroclastic flows are more dangerous than lava flows. They are made of gas and volcanic matter. The temperature inside one can reach 1832 F. They move at a speed of more than 50 miles per hour. It is impossible for humans and animals to outrun them. These flows make the eruption of stratovolcanos deadly. As a result, the forests covering the mountain were ruined. Fortunately, there weren't any towns near enough to be destroyed.(5) By the time Mount St. Helens finished erupting, a crater had formed at its top. Forests had been destroyed for miles and rivers had been blocked by debris. Clouds had even blocked out the sun in the entire state. It took years for the environment to recover.How does the fifth paragraph support the main idea of the article that the eruption at Mount St. Helens was dangerous and had lasting effects? Charlie, Henry, and Patrick went to the movies and each purchased 2chocolate candy bars from concessions. Charlie ate 1/2 of a candy bar, Henryate 1 &1/6 candy bars, and Patrick ate 1 & 3/4 candy bars. How many candy bars didthe boys eat altogether? Select all the correct answers.A. 3 & 5/12B. 5 & 5/12C. 41/12D. 65/12E. 2 & 5/12 plz help bbbbbbbbbbbbb Before cells divide, they must replicate their entire genome. Explain whyreplication of the genome prior to cell division is important. Fill in the blank with the Spanish word that best completes the following sentence.Cuando necesito dinero, hablo con _________. Alexa bought 25 pounds of turkey for $26.25. What is the cost perpound? Which of the following resulted from President Andrew Jackson's attempt to protect Northern industries?A The Compromise of 1850B. The Missouri CompromiseC. The Secession ConventionD. The Nullification controversy What happens when the negative feedback response to a stimulus What is a composite primary key made up of?O an autonumber field/a reference to a different tablemore than one fieldmultiple records in the table Why did Texans prefer low tariffs over protective tariffs? help plz are you writing a letter? Which of the following is the most appropriate SMART goal for "johnny" who wantsto increase the number of pulls up he can do?A. Get stronger by AugustB. Be able to do 150 pull ups by JuneC. Have more arm strengthD. Increase the amount of pull-ups I can do from 2 to 5 by the end of the schoolyear what is meaning of SAT? someone help me with my questions on my page Complete the solution of the equation. Find thevalue of y when x equals 15.-x + 2y = -1 How was the world after God created it? The condition of the World? Answer these 3 please thanks what is the solution of the following? *-4 = 16Infinite solutionsno solution hydrocarbon structures methopane