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a_sh-v [17]
3 years ago
11

Two grams of potassium chloride are completely dissolved in a sample of water in a beaker. This solution is classified as

Chemistry
1 answer:
Eddi Din [679]3 years ago
5 0
The answer is (3) a homogeneous mixture. The difference between homogeneous and heterogeneous mixture is the degree of the mixture being mixed. Due to the completely dissolved and the dissolving ability of KCl, we can get the answer,
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Determine whether the material is a mineral or a non-mineral based on the description
almond37 [142]

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.

3 0
3 years ago
Read 2 more answers
Explain what this graph says
anastassius [24]

Answer:

Numbers of red line are on the right, numbers of blue line are on the left.

3 0
3 years ago
Given the following equation: Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag If 89.5 grams of Ag were produced, how many grams of Cu react
postnew [5]

Answer:

mass of Cu = 26,34615g

Explanation:

The equation for reaction is

Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag

1mol       2mol            1mol           2mol

mass of Ag that reacted = 89.5g

molar mass of Ag =107.86h/mol

number of moles = mass/molar mass

number of moles of Ag = 89.5/107.86

                    =0.8298moles

from the stoichoimetric relation;

1mol of Cu reacted to produce 2moles of Ag;

hence 0.8298moles of Ag produce would require;  0.8298/2 moles of Cu to react

            =0.4149moles of Cu

mass of Cu = moles of Cu * molar mass of Cu

molar mass(Cu) = 63.5g

mass of Cu = 0.4149 * 63.5

mass of Cu = 26,34615g

3 0
3 years ago
Which equation is an expression of the rate law?
notsponge [240]

Answer:

The answer to the question is C

7 0
3 years ago
Which of the following is made up of a coordinate covalent bond?
yan [13]
 carbon monoxide (CO)  <span> is made up of a coordinate covalent bond
</span>coordinate covalent bond is formed when both electrons forming the bonding pair of electrons are provided by the same atom
8 0
3 years ago
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