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4 years ago

Chemical and physical properties of calcite

Chemistry

1 answer:

Semenov [28]4 years ago

7 0

Answer:

Chemical Classification Carbonate

Explanation:

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Upon combustion, a compound containing only carbon and hydrogen produces 2.67 g<img src="https://tex.z-dn.net/?f=CO_%7B2%7D" id=

Hoochie [10]

Answer:

$\boxed{\text{CH$_{2}$}}$

Explanation:

1. Calculate the mass of each element

$\text{Mass of C} = \text{2.67 g } \text{CO}_{2}\times \dfrac{\text{12.01 g C}}{\text{44.01 g }\text{CO}_{2}}= \text{0.7286 g C}\\\\\text{Mass of H} = \text{1.10 g }\text{H$_{2}$O}\times \dfrac{\text{2.016 g H}}{\text{18.02 g } \text{{H$_{2}$O}}} = \text{0.1231 g H}$

2. Calculate the moles of each element

$\text{Moles of C = 0.7286 g C}\times\dfrac{\text{1 mol C}}{\text{12.01 g C }} = \text{0.060 67 mol C}\\\\\text{Moles of H = 0.1231 g H} \times \dfrac{\text{1 mol H}}{\text{1.008 g H}} = \text{0.1221 mol H}$

3. Calculate the molar ratios

Divide all moles by the smallest number of moles.

$\text{C: } \dfrac{0.06067}{0.06067}= 1\\\\\text{H: } \dfrac{0.1221}{0.06067} = 2.015$

4. Round the ratios to the nearest integer

C:H = 1:2

5. Write the empirical formula

The empirical formula is $\boxed{\text{CH$_{2}$}}$

8 0

3 years ago

Butter has a specific gravity of 0.86. What is the mass of 2.45 L<br> of butter?

Tema [17]

Answer:

mass of the butter is 2.107 kg

Explanation:

specific gravity = destiny of the substance / density of

the water at 4°C

0.86 = density of the butter / 1000

where density of the water is 1000 kg/m^3 at 4°C

density of the butter = 860kg/m^3

now,

density of the butter = mass of the butter / volume

860 = mass of the butter / 2.45 × 10^-3

( 1 L = 10^ -3 m^3)

mass of the butter = 2.107 kg

can I get brainlist plz

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3 years ago

Neon in a piston is compressed to a volume of 14L its original volume was 22 L at 11.2 atm find the new pressure in atm

Jobisdone [24]

I love chem!!! Hopefully I got it right for u I got

In the calculator: 7.127272727

But if u need it in sig figs: 7.1atm

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3 years ago

Cuales son los símbolos para representar que una reacción se produce en presencia de;

ycow [4]

Answer:

Explanation:

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3 years ago

When a worm turns away from light is an example of?

Nikolay [14]

Answer:

Photophobia

When a worm turns away from light, is is trying to avoid it. This characteristic of avoiding or fearing the sun is an example of photophobia.

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2 years ago

Chemical and physical properties of calcite​

Chemical and physical properties of calcite