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grigory [225]
2 years ago
12

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

Chemistry
2 answers:
almond37 [142]2 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]2 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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22.5 g of silver nitrate reacts with excess magnesium bromide, determine the mass
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Answer:

9.82 g of Mg(NO₃)₂

Explanation:

Let's determine the reaction:

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2 moles of nitrate silver reacts with MgBr₂ in order to produce 1 mol of magnesium nitrate and silver bromide.

We determine the moles of AgNO₃

22.5 g . 1mol / 169.87g = 0.132 moles

Ratio is 2:1.

2 moles of silver nitrate can produce 1 mol of magnesium nitrate

Then, our 0.132 moles may produce (0.132 . 1)/ 2 = 0.0662 moles

We convert moles to mass:

0.0662 mol . 148.3 g/ mol = 9.82 g

6 0
2 years ago
A solution contains 0.140 mol KCl in 2.100 L water. What is the concentration of KCl in g/L?
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<h3><u>Answer</u>;</h3>

≈ 4.95 g/L

<h3><u>Explanation;</u></h3>

The molar mass of KCl = 74.5 g/mole

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The molar mass of H2O is 18.01 g/mol. The molar mass of O2 is 32.00 g/mol. What mass of H2O, ins grams, must react to produce 50
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Answer:

56.28 g

Explanation:

First change the grams of oxygen to moles.

(50.00 g)/(32.00 g/mol) = 1.5625 mol O₂

You have to use stoichiometry for the next part.  Looking at the equation, you can see that for every 2 moles of H₂O, 1 mole of O₂ is produced.  Convert from moles of O₂ to moles of H₂O using this relation.

(1.5625 mol O₂) × (2 mol H₂O/1 mol O₂) = 3.125 mol H₂O

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