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murzikaleks [220]
3 years ago
9

3. Why are fossils so rare?

Chemistry
1 answer:
Travka [436]3 years ago
3 0

Answer:

fossils are rare bc most dead organisms get decayed by environmental change and decomposers,most fossils are parts of bones and mostly found indry areas like deserts

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What is the answer to SiO2 + C --> Si + CO
Inessa05 [86]

Answer:

SiO2 + 2C - - > Si + 2CO

Explanation:

Everything should balance out now. The same number of atoms of each kind on each side

8 0
4 years ago
Balance the following reaction. 2Ca3(PO4)2 + C + 6SiO2 → CaSiO3 + P4 + CO
miskamm [114]

Answer:

2Ca₃(PO₄)₂ + 10C + 6SiO₂ → 6CaSiO₃ + P₄ + 10CO.

Explanation:

  • To balance a chemical reaction, we should apply the law of conservation of mass.

  • Law of conversation of mass states that the no. of atoms is equal in both sides of the chemical reaction.

  • So, the balanced chemical reaction is:

<em>2Ca₃(PO₄)₂ + 10C + 6SiO₂ → 6CaSiO₃ + P₄ + 10CO.</em>

that 2 mol of Ca₃(PO₄)₂ react with 10 mol of C and  6 mol of SiO₂ to produce 6 mol of CaSiO₃, 1 mol of P₄ and 10 mol of CO.

3 0
3 years ago
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How many grams of a 14.0% (w/w) sugar solution contain 62.5<br> of sugar?
Delicious77 [7]

Answer:

m_{solution}=446.4g

Explanation:

Hello,

In this case, by-mass percent is computed in terms of the mass of the solute and the mass of the solvent as shown below:

\% m=\frac{m_{solute}}{m_{solution}} *100\%

Thus, solving for the mass of the solution, we obtain:

\frac{x}{y} m_{solution}=\frac{m_{solute}}{\% m}*100\%\\ \\m_{solution}=\frac{62.5g}{14.0\%}*100\% \\\\m_{solution}=446.4g

Regards.

3 0
3 years ago
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3 0
3 years ago
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If you want to increase the gravitational force between two objects, what would you do
nadezda [96]
There are two things that could be done. The first is to increase the mass of the objects. The second is to decrease the distance between the center of masses of the objects.
6 0
4 years ago
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