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2 years ago

10

Why are some resources, like fossils, found in some places and not in others?

1 answer:

devlian [24]2 years ago

6 0

Answer:

Because thats where the animal passed away

Explanation:

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if you are curious at to why so many of ur family members have certain hair or eye color, you might want to look at... A. Astrol

densk [106]

Answer:

c) hereditary

Explanation:

This means that if your parents had one eye colour, you'll most likely have the same one because you share the same genes, and it's passed down to you.

7 0

3 years ago

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Will mark the brainiest later for correct answers! Please show work.

Elodia [21]

Answer:

According to avogadro's law, 1 mole of every substance contains avogadro's number $6.023\times 10^{23}$ of particles and weighs equal to its molecular mass.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}$

$\text{Number of moles}=\frac{\text{Given molecules}}{\text {Avogadros number}}$

a. moles in 14.08 g of $C_{12}H_{22}O_{11}$ = $\frac{14.08g}{342.3g/mol}=0.04113moles$

molecules in 14.08 g of $C_{12}H_{22}O_{11}$ = $0.04113\times 6.023\times 10^{23}=0.2477\times 10^{23}$

b. moles in 17.75 g of NaCl = $\frac{17.75g}{58.5g/mol}=0.3034moles$

molecules in 17.75 g of $NaCl$ = $0.3034\times 6.023\times 10^{23}=1.827\times 10^{23}$

formula units 17.75 g of $NaCl$ = $0.3034\times 6.023\times 10^{23}=1.827\times 10^{23}$

c. moles in 20.06 g of $CuSO_4.5H_2O$ = $\frac{20.06g}{249.68g/mol}=0.08034moles$

formula units in 20.06 g of $CuSO_4.5H_2O$ = $0.08034\times 6.023\times 10^{23}=0.4839\times 10^{23}$

7 0

2 years ago

Which organisms in the food web shown compete for the same food source in this environment?

11111nata11111 [884]

Answer:

there is no photo

Explanation:

3 0

2 years ago

17. Explain why chlorine gas can be prepared by electrolyzing an aqueous solution of NaCl

yulyashka [42]

Answer:

Fluorine gas reacts with water.

8 0

2 years ago

How many moles of carbon are in the sample?<br><br>0.500<br><br>1.00<br><br>6.00<br><br>12.0

DedPeter [7]

The answer is A.) 0.500

6 0

2 years ago

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