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Stels [109]
3 years ago
5

What's the most lightest element known?​

Chemistry
2 answers:
Anna35 [415]3 years ago
5 0

Answer:

Hydrogen

Explanation:

Hydrogen, most abundant in the universe, is the chemical element with atomic number 1, and an atomic mass of 1.00794 amu, the lightest of all known elements. It exists as a diatomic gas (H2).

Doss [256]3 years ago
5 0

Answer:

Hydrogen

Explanation:

Hydrogen, most abundant in the universe, is the chemical element with atomic number 1, and an atomic mass of 1.00794 amu, the lightest of all known elements. It exists as a diatomic gas (H2).

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12g of Pottasium sulphate dissolves in 75g of water at 60°C. What is the solubility at that temperature?
pentagon [3]
To find solubility, we need calculate how much potassium sulfate will be dissolved at 100 g of water.

12 g potassium sulfate  ------ 75 g water
x g potassium sulfate  --------100 g water

x=12*100/75 = 16g
So, solubility of potassium sulfate at 60⁰ C is 16 g potassium sulfate per 100 g of water.
8 0
4 years ago
Under the conditions of 775 torr of pressure and 30 °C temperature,
docker41 [41]

Answer:

31 ml

Explanation:

At constant temperature of 30°C;

Using Boyles Law:

P1V1 = P2V2

775 × 30 = 750V2

V2 = (775 × 30) / 750 = 31ml

6 0
3 years ago
What is a real-world example of an inelastic collision?
dsp73
Collision between  two dough is an example of inelastic collision in real world.

Hope this helps!
4 0
4 years ago
In the polypeptide Phe-Tyr-Glu-Asp-Ser-Ile-Leu-Ser what is the N-terminal amino acid?
avanturin [10]

Answer:

N-terminal Phe, C-terminal Ser

Explanation:

Amino acids connect like

NH2 -CH(R1) -CO -NH-CH(R2)-CO-.....-NH-CH(Rn)COOH

So, 1st amino acid is N -terminal , and it is Phe.

Last amino acid is C- terminal, and it is Ser.

7 0
3 years ago
In terms of their electron configurations, why is cesium more likely to lose its valence electron than potassium?
Harlamova29_29 [7]

Explanation:

use the term electron sheilding, the more electrons between the valence el3ctron and nucleus the easier to lose the valence electron (more sheilding = easier to lose)

5 0
3 years ago
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