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g100num [7]
3 years ago
14

2. which substance pictured below has the least density?

Chemistry
1 answer:
Colt1911 [192]3 years ago
5 0
The substance pictured below that has the least density is C.
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In the dark waters just below the photic zone, because of cellular respiration, the concentration of dissolved __________ is hig
Dafna1 [17]
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The melting points of four impure samples of lead(II) bromide were measured. The results are
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D

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Explanation:

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What products would you expect from the reaction of ammonia and sulfuric acid in aqueous solution? 2nh3(aq)+h2so4(aq)→ ?
arsen [322]
From the reaction of ammonia and sulfuric acid in aqueous solution 2nh3(aq)+h2so4(aq)<span>→</span> (NH4)2SO4 + H2O will be formed.Sulfuric acid is diprotic so is able to give up 2 H+ ions. It is an acid-base neutralisation reaction forming ammonium sulphate as the salt. 2NH3 with H2SO4 reacts in a neutralization reaction to form salt water, with ammonium sulphate left behind to crystallize after evaporation.
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3 years ago
The element californium (cf) sells for $1000 per µg. assuming 6.02 x 1023 atoms of cf have a mass of 251 grams, how many atoms o
saveliy_v [14]

Answer:- 2.40*10^1^0atoms

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We know that, 1 US dollar = 100 cents

1 cent  = 1 US penny

So, 1 US dollar = 100 US pennies

1g=10^6\mu g

Let's make the set up starting with 1 penny as:

1penny(\frac{$1}{100pennies})(\frac{1\mu g}{$1000})(\frac{1g}{10^6\mu g})(\frac{6.02*10^2^3atoms}{251g})

= 2.40*10^1^0atoms

Therefore, we can bye 2.40*10^1^0atoms of Cf in one US penny.

3 0
3 years ago
Which of the following are required for plants to carry out photosynthesis?
Vika [28.1K]

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Carbon dioxide, water, and sunlight

Explanation:

3 0
2 years ago
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