Ultraviolet rays from the sun can cause

Chemistry

1 answer:

BlackZzzverrR [31]3 years ago

3 0

Staying in the sun too long causes skin burn and looking at the sun damages your eyes as well so it's C

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Use distributive law evaluate

Alika [10]

Answer:

<em>The distributive property of multiplication is used when we need to multiply a number with the sum of two or more addends. The distributive property of multiplication is applicable to addition and subtraction of two or more numbers.</em>

<em>Hope its helpful!</em>

6 0

2 years ago

Read 2 more answers

If this energy were used to vaporize water at 100.0 ∘C, how much water (in liters) could be vaporized? (Assume the density of wa

11Alexandr11 [23.1K]

Answer:

0.425 L

Explanation:

Given the information from the question. We know that the water heat evaporation is given by 2261 KJ/kg. Therefore, for each Kg of vapor, 2261 is required.

To calculate the amount of water evaporated by 960 KJ is as follows

= (1/2260)*960 =0.425 Kg

In other words, 0.425 of water is evaporated by 960 KJ.

To calculate the volume of water, we have mass and density. Therefore, Volume = Mass/Density = 425g/1g/ml = 0.425 L.

Therefore, water evaporated is 0.425 L

5 0

4 years ago

If the Ksp of NaCl is experimentally determined to be 53.9, then what is the concentration of Na (in M) when it begins to crysta

Lady bird [3.3K]

For the concentration of Na in M when it begins to crystallize out of the solution is mathematically given as

Na+ = 0.125M

<h3>what is the concentration of Na in M when it begins to crystallize out of the solution?</h3>

Generally, the equation for the Ksp of the solution is mathematically given as

Na⁺+CL⁻

Ksp = SxS

53.9 = s^2

S = 7.34

Molar mass Nacl 58,44

Solubility = 7.34/58.44

Solubility = 0.125M

In conclusion, the concentration of Na in M when it begins to crystallize out of the solution

Na+ = 0.125M