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Dmitry [639]
3 years ago
6

When did Darwin publicly share his views of evolution?

Chemistry
1 answer:
Veronika [31]3 years ago
4 0

Answer:

It was not until he was 50 years old, in 1859.

Explanation:

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An acid is:
agasfer [191]
An acid is a proton donor
5 0
3 years ago
What is the mass of 4.56 moles of copper (ii) fluoride​
musickatia [10]

Answer:

463.0 g.

Explanation:

  • We can use the following relation:

<em>n = mass/molar mass.</em>

where, n is the mass of copper(ii) fluoride​ (m = 4.56 mol),

mass of copper(ii) fluoride​ = ??? g.

molar mass of copper(ii) fluoride​ = 101.543 g/mol.

∴ mass of copper(ii) fluoride​ = (n)(molar mass) = (4.56 mol)(101.543 g/mol) = 463.0 g.

7 0
2 years ago
Which statement describe what happens to the kinetic energy of the particles in the atmosphere as they come into contact with th
timurjin [86]

the answer is The average kinetic energy of the surrounding air particles increases.


                   hope it helps


7 0
3 years ago
Balance the following half-reaction: (acidic) NO−3(aq) → NO2(aq) Express your answer as a half-reaction. Identify all of the pha
Marrrta [24]

Answer:

2H⁺  + NO₃⁻  + 1e⁻ →  NO₂  + H₂O

Explanation:

NO₃⁻  →  NO₂

In left side, Nitrogen acts with +5 by oxidation number

In right side, the oxidation number is +4

This is a reduction reaction, because the oxidation number has decreased. So the N has gained electrons.

NO₃⁻  + 1e⁻ →  NO₂

In acidic medium, we have to add water, where there are less oxygens to ballance the amount. We have 2 O in left side, and 3 O in right side, so we have to add 1 H₂O on left side.

NO₃⁻  + 1e⁻ →  NO₂  + H₂O

Now that oxygens are ballanced, we have to ballance the hydrogens by adding protons in the opposite side

2H⁺  + NO₃⁻  + 1e⁻ →  NO₂  + H₂O

8 0
3 years ago
Number 2 &amp; 3 please !!&lt;3
Goshia [24]

Answer:just for the ponits

Explanation:ima be a jenna

8 0
2 years ago
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