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zhenek [66]
3 years ago
12

1 ______ energy is stored in the zinc rod, the copper rod, and their solution

Chemistry
1 answer:
steposvetlana [31]3 years ago
3 0
1 ______ energy is stored in the zinc rod, the copper rod, and their solution

Chemical

2 the glowing of the bulb indicates that ______ energy is produced.

electrical

3 the flow of electrons through the wire produces _____ energy

electrical

4 ____ energy is converted into electrical energy

chemical
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The analysis of a compound gives the following percent composition by mass: C: 52.14 percent; H: 9.946 percent; S: 12.66 percent
wariber [46]

Answer:

C11H25SO4

Explanation:

The total mass of the compound is 253.4 g, so, the mass of each element will be:

C: 52.14% of 253.4 = 0.5214x253.4 = 132.12 g

H: 9.946% of 253.4 = 0.09946x253.4 = 25.20 g

S: 12.66% of 253.4 = 0.1266x253.4 = 32.08 g

O: 25.26% of 253.4 = 0.2526x253.4 = 64.00 g

The molar mass are: C = 12 g/mol, H 1 g/mol, S = 32 g/mol, and O = 16 g/mol

So, to know how much moles will be, just divide the mass calculated above for the molar mass:

C: 132.12/12 = 11 moles

H: 25.20/ 1 = 25 moles

S: 32.08/32 = 1 mol

O: 64.00/16 = 4 moles

So the molecular formula is C11H25SO4

3 0
3 years ago
How does concentration affect the chemical equilibrium?
nevsk [136]
When the concentration of a reactant is increased, the chemical equilibrium will shift towards the products. More product is formed and the concentration of the reactants decreases as the concentration of the products increases.
7 0
3 years ago
Help me in my this plzzz ​
eduard

Answer:

a is oxidation

b is reduction

c is reduction

d is oxidation

hope it helps you

8 0
3 years ago
Read 2 more answers
All of the alkali earth metals, Group 2, have two valence electrons. Which of these would represent the oxidation number of the
chubhunter [2.5K]
Since Group 2 alkali earth metals have 2 valence electrons, they tend to lose those 2 when forming ionic bonds. And the Loss of Electrons = Oxidation (L.E.O. for short). Therefore this group, including Mg and Ca, have an oxidation of [+2].
So the correct answer is C) +2
5 0
3 years ago
Read 2 more answers
True or False- The parts of a mixture keep their own properties when they are combined.
ICE Princess25 [194]
It is true yes :) happy to help

4 0
3 years ago
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