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Serga [27]
3 years ago
6

Why do we need to study chemistry?

Chemistry
1 answer:
Georgia [21]3 years ago
3 0

Chemistry is very important to study. Chemistry explains the natural world around us and also explains certain chemical processes that happen here on earth.

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A gas with an empirical formula C2H2O has a molecular weight of 120.6g/mol. A possible molecular formula for the gas is
Virty [35]

M(C2H2O)= 12.0*2 +1.0*2 +16.0 = 42 g/mol is a molar mass for empirical formula.

120.6g/mol/42g/mol ≈ 3

So, empirical formula should be increased 3 times,

and molecular formula is C6H6O3.

Answer is D.

7 0
3 years ago
1. the purpose of the aqueous solutions in a galvanic cell is to?
ludmilkaskok [199]

Answer:

1. The correct option is;

c. maintains charge balance in the cell

2. The correct option is;

c. +3.272 V

Explanation:

The aqueous solution in a galvanic cell is the electrolyte which is a ionic solution containing that permits the transfer of ions between the separated compartment of the galvanic cell such that the overall system is electrically neutral

Therefore, the aqueous solution maintains the charge balance in the cell

2. Here we have;

B₂ + 2e⁻ → 2B⁻ Ecell = 0.662 V

A⁺ + 1e⁻ → A Ecell = -1.305 V

Hence for the overall reaction, we have;

2A + B₂ → 2AB gives;

(0.662) - 2×(-1.305)  = +3.272 V.

4 0
3 years ago
Which type of medicine kills cancer cells in the body, but also kills healthy cells?
Nesterboy [21]
Doxorubicin because it is one of the most powerful drugs in chemotherapy
8 0
3 years ago
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Covalent compounds occur------
irga5000 [103]

Answer:

Only between nonmetals

Explanation:

  • Covalent compounds are compounds that are formed as a result of covalent bonding between nonmetal atoms.
  • Covalent compounds occur only between non metals, where atoms of the nonmetals involved join to form a covalent bond as a result of sharing of electrons.
  • <u><em>Electrons shared during the formation of covalent bond, may be from one atom involved or each atom contributing equally to the bond formation.</em></u>
  • An example of covalent compounds include, phosphorus (v) oxide, methane, water, CO2,etc.
4 0
3 years ago
The thermostat in a refrigerator filled with cans of soft drinks malfunctions and the temperature of the refrigerator drops belo
butalik [34]

Answer:

B.

Explanation:

Water expands on freezing and there is more water in the diet drinks than in the other drinks.

5 0
2 years ago
Read 2 more answers
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