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alisha [4.7K]
3 years ago
9

Find the "density" of a copper sample whose mass is 134.4 grams and whose volume is 15.0mL

Chemistry
1 answer:
Sonja [21]3 years ago
3 0

Answer:

8.96 g/mL

Explanation:

density = mass / volume

density = 134.3g / 15.0 mL

density = 8.96 g/mL

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Why does the solid phase of water (ice) float in liquid water?
Nastasia [14]

Answer: SOLID WATER(ICE) IS LESS DENSE THAN LIQUID WATER

Explanation:Water molecules are bonded together by Hydrogen bonds, Hydrogen bonds are intermolecular forces binding the molecules of Oxygen with that of Hydrogen. When in an ICE state,the solid form of water will float on the liquid form of water, because the orientation of Hydrogen bonds pushes or makes the Ice molecules to stay far apart from each making it less Dense than liquid water.

3 0
3 years ago
Which arrow represents the change of state described above? <br>L<br>N<br>O<br>P​
denis-greek [22]

Answer:

The answer is either o or p i think it is p

Explanation:

6 0
3 years ago
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Race car <br> Mass is 1250 kilograms <br> Velocity is 2.3 m/s <br> What is the momentum?
dalvyx [7]

mass \: of \: the \: car \:  = 1250 \: kg \\  \\ velocity \: of \: the \: car \: is \:  = 2.3m/s \\  \\ formula \: to calculate \: momentum \:  \\  \\  \:  \:  \:  \: p = mv \:  \:  \: (m = mass \: and \: v = velocity) \\  \\ momentum \:  = 1250 \times 2.3 = 2875m/s

8 0
3 years ago
All compounds of carbon are made by _____.
Andrew [12]

Answer:

Covalent bonding

Explanation:

Covalent bonding is the bond that holds all compound that are formed by carbon.

It is a very strong intermolecular bond that holds the structure of carbon compounds in place.

Principally, covalent compounds are formed by sharing of electrons between contributing atoms.

Covalent bonds are the strongest bond types. A reason for this conclusion can be see in case of diamond. Here, there is a covalent linkage between the atoms present and the strength of these bonds is responsible for how strong the diamond crystal is

4 0
3 years ago
If you have 155 mL solution of a 0.762 M FeCl3 solution, how many
Sedaia [141]

Moles are the product of the molar concentration and the volume of the solution. The moles of Ferric chloride is 0.118 moles.

<h3>What are moles?</h3>

Moles are the smallest unit of the measurement of atoms and molecules. It is calculated by the molar concentration and the volume of the solution.

Given,

Molar concentration of ferric chloride = 0.762 M

Volume of solution = 0.155 L

Moles are calculated as:

\begin{aligned} \rm Moles &= \rm Molarity \times Volume (L) \\\\&= 0.762 \times 0.155\\\\&= 0.118\;\rm mol\end{aligned}

Therefore, 0.118 moles of ferric chloride are present in the sample.

Learn more about moles here:

brainly.com/question/17084980

#SPJ1

7 0
2 years ago
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