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grigory [225]
3 years ago
12

Determine whether the material is a mineral or a non-mineral based on the description

Chemistry
2 answers:
almond37 [142]3 years ago
3 0

Answer:

  • Calcium is homogeneous Three  percent of Earth's crust is made  of calcium Mineral
  • Glycerin is a viscous liquid at room temperature.  Non-mineral
  • Emerald is hard and does not  decay. Its chemical formula is  Be3Al2(SIO3)6  Mineral
  • Chlorophyll is produced in plants during photosynthesis  Non-mineral

Explanation:

Minerals are generally solid and inorganic substances, with defined crystalline structures, that exist in the earth's crust, formed by one or more chemical elements.

Calcium is the fifth element in abundance in the earth's crust, it is found forming mineral compounds such as calcite and dolomite or rocks such as marble, limestone and dolomite.

Glycerin is a colorless, slimy and sweet-tasting substance that is obtained from animal and vegetable fats and oils. According to its characteristics, it does not have a solid structure, which is why it is considered a non-mineral.

Emerald is a cyclic silicate of beryllium and aluminum whose chemical formula is Be3Al2(SiO3)6, it has a well-defined crystalline structure.

Chlorophyll is a green pigment that is present in the leaves and stems of many vegetables and is responsible for the photosynthesis process; does not have a crystalline structure defined by what is considered a non-mineral.

GarryVolchara [31]3 years ago
3 0

Answer:

Calcium is homogeneous Three

percent of Earth's crust is made

of calcium → Minerals

Glycerin is a viscous liquid

at room temperature. → Non mineral

Emerald is hard and does not

decay. Its chemical formula is

Be₃Al₂SiO₆ →  Minerals

Chlorophyll is produced in plants

during photosynthesis → Non minerals

Explanation:

Minerals are natural occurring crystalline substances that has a definite chemical formula . Minerals are usually solid in nature and are inorganic . Minerals contains no plant or animals.

Calcium is homogeneous because it contains only 1 substance. Calcium is regarded as a mineral because it is natural occurring and has a definite chemical formula and solid. The earth crust contains abundant of calcium.

Glycerin is not a solid . The source is from plant which makes it organic. Glycerin is a non mineral because it is liquid and organic in nature.

Emerald is a mineral . Emerald has a definite chemical formula and it is natural occurring , crystalline ,solid and inorganic in nature.

Chlorophyll is a substance produce in plants during photosynthesis . chlorophyll is organic because it is produce in plants . Therefore chlorophyll is not a mineral.  

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Answer:

MnSO₄.7H₂O

Explanation:

To solve this question, we need to convert the mass of the dehydrated MnSO₄. The difference between mass of the hydrate and dehydrated compound is the mass of water. With the mass we can find the moles of water and the formula of the hydrate:

<em>Moles MnSO₄ -Molar mass: 151g/mol-:</em>

17.51g * (1mol / 151g) = 0.116 moles

<em>Moles H₂O -Molar mass: 18g/mol-:</em>

32.14g-17.51g = 14.63g * (1mol / 18g) = 0.813 moles

The ratio of moles MnSO₄: Moles H₂O represent the amount of water molecules in the hydrate:

0.813mol / 0.116mol = 7 molecules of water.

The hydrate formula is:

<h3>MnSO₄.7H₂O</h3>
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How many grams of Cl2 are in 1.20 x 1024 Cl atoms?
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<h3>Answer:</h3>

70.906 g

<h3>Explanation:</h3>

We are given;

  • Atoms of Chlorine = 1.2 × 10^24 atoms

We are required to calculate the mass of Chlorine

  • We know that 1 mole of an element contains atoms equivalent to the Avogadro's number, 6.022 × 10^23.
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But since Chlorine gas is a molecule;

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But, molar mass of Chlorine gas = 70.906 g/mol

Then;

70.906 g Of chlorine gas = 2 × 6.022 × 10^23 atoms

                                          = 1.20 × 10^24 atoms

Thus;

For 1.2 × 10^24 atoms ;

= ( 70.906 g/mol × 1.2 × 10^24 atoms ) ÷ (1.20 × 10^24 atoms)

<h3>=  70.906 g </h3>

Therefore, 1.20 × 10^24 atoms of chlorine contains a mass of 70.906 g

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