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Marrrta [24]
3 years ago
14

What did henry mosely do?, What did he discover and how it proved that mendeleev's period was valid?

Chemistry
1 answer:
Anettt [7]3 years ago
8 0
Henry Mosely reorganized Mendeleev's periodic table so it would be in order of atomic number (number of protons) instead of in order by atomic mass. (I don't know the answer to the other 2 questions I apologize)
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The chemical bond between which two atoms is most polar
masha68 [24]

Answer:

yes

Explanation:

6 0
3 years ago
A sample of a chromium-containing alloy weighing 3.450 g was dissolved in acid, and all the chromium in the sample was oxidized
Zina [86]

Answer:

H_2O + 2CrO_4^2- + 3SO_3^2- -> 3SO_3^2- + 2CrO_2^- + 2OH^-

Explanation:

Reduction half reaction

2H_2O + CrO_4^2- + 3e -> CrO_2^- + 4OH^-

Oxidation half reaction

2OH^- + SO_3^2- -> SO_4^2- + H_2O + 2e

Balanced overall equation

H_2O + 2CrO_4^2- + 3SO_3^2- -> 3SO_3^2- + 2CrO_2^- + 2OH^-

 

5 0
3 years ago
How do starch and ATP store and supply energy?
riadik2000 [5.3K]

Answer:

molecules store energy

Explanation:

Hope This Helps! ^^

5 0
3 years ago
Organisms can pass on genetic information through asexual or sexualreproduction.Which if the following statements best describes
Troyanec [42]
Well, with asexual reproduction you are actually making a genetic copy or the original organism, almost like a clone -- their is no genetic difference between the org organism and its "offspring." 

With sexual reproduction the goal is to is to create 4 sex cell either sperm or egg cells. When cells split in sexual reproduction it enables for the off spring to have a great range of genetic diversity. The offspring will be a completly unique not like the mother or father but sharing traits for both. The main benefit of sexual reproduction is genetic diversity.
8 0
3 years ago
What percentage of strontium-90 remains in a sample after three half-lives have passed? 12.5% 15% 25% 60%?
Lyrx [107]

12.5% of strontium-90 would remain in a sample after three half-lives have passed. Half-life automatically means 50% of the original amount would remain.

4 0
3 years ago
Read 2 more answers
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