3 years ago

Which causes genetic variations and can result in different alleles?

Chemistry

2 answers:

ivann1987 [24]3 years ago

5 0

Answer:

Environmental Changes

Explanation:

Inessa05 [86]3 years ago

5 0

Answer:

Explanation:

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when 45 grams of copper (ii) carbonate are decomposed with heat how many grams of carbon dioxide will be produced

Maksim231197 [3]

Answer:

16.02 g

Explanation:

the balanced equation for the decomposition of CuCO₃ is as follows

CuCO₃ --> CuO + CO₂

molar ratio of CuCO₃ to CO₂ is 1:1

number of CuCO₃ moles decomposed - 45 g / 123.5 g/mol = 0.364 mol

according to the molar ratio

1 mol of CuCO₃ decomposes to form 1 mol of CO₂

therefore 0.364 mol of CuCO₃ decomposes to form 0.364 mol of CO₂

number of CO₂ moles produced - 0.364 mol

therefore mass of CO₂ produced - 0.364 mol x 44 g/mol = 16.02 g

16.02 g of CO₂ produced

8 0

4 years ago

I break and shatter easily and I am not shiny. What am I?

Troyanec [42]

Answer:

Uhh a heart? i.dk

7 0

2 years ago

Which of the models shown below best represents the modern understanding of the structure of the atom?

rjkz [21]

Answer:

The answer may be A because that's what I believe

4 0

3 years ago

La TEMPERATURA es un cambio físico o Químico?

kramer

Answer:

es un cambio fisico

Explanation:

5 0

4 years ago

BIOCR

Amiraneli [1.4K]

Answer:

Six atoms of calcium, four of phosphorous and sixteen of oxygen for a total of twenty six

Explanation:

Hello there!

In this case, according to the molecular formula of the two moles of calcium phosphate:

$2Ca_3(PO_4)_2$

Thus, in order to calculate the atoms of each atom, it is necessary to multiply the two in front of the formula by the subscripts in the reaction:

$atoms Ca=2*3=6\\\\atoms P=2*2=4\\\\atoms O=2*2*4=16$

Thus, we obtain six atoms of calcium, four of phosphorous and sixteen of oxygen for a total of twenty six.

Best regards!

6 0

3 years ago