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algol13
3 years ago
8

1. What did Henri Becquerel discover about radiation emitted from uranium salts?

Chemistry
1 answer:
Dmitriy789 [7]3 years ago
6 0

Explanation:

When Henri Becquerel investigated the newly discovered X-rays in 1896, it led to studies of how uranium salts are affected by light. By accident, he discovered that uranium salts spontaneously emit a penetrating radiation that can be registered on a photographic plate.

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Calculate the mass of CaCl2 ( formula wt. = 110.99) thatshould
NNADVOKAT [17]

Answer: 5622.6g

Explanation:

Note: Kf for water is 1.86°C/m.

The simple calculation is in the attachment below.

7 0
3 years ago
Which of the following atoms would gain two electrons to fill its valence energy level?
Harlamova29_29 [7]

The atom that would gain two electrons to fill its valence energy level is S(sulfur)

This is because s (sulfur) is in atomic number 16 with 2.8.6 of [Ne] 3s^2 2p^4 electronic configuration. This implies that sulfur has 6 valence electron and therefore it require two electron to fill its valence energy level and obtain 18 rule electrons.

5 0
3 years ago
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ZanzabumX [31]

Answer:

two atoms

Explanation:

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6 0
3 years ago
Do states need to be written in a chemical equation
Reptile [31]
Yes. because equation balances the number of particles.
4 0
3 years ago
Why do you think steeples and roofs might appear green, but a copper square does not?
Masteriza [31]
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8 0
2 years ago
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