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mamaluj [8]
3 years ago
14

Help me plz my last test​

Chemistry
1 answer:
Paraphin [41]3 years ago
5 0
I believe it's tissue
You might be interested in
An element consists of 5.85% of an isotope with mass 53.940 u, 91.75% of an isotope with mass 55.9349 u, 2.12% of an isotope wit
Gemiola [76]

Answer:

The answer to your question is: 55.84 u. The element is Iron

Explanation:

isotope 1    mass 53.94 u        abundance  5.85%

             2   mass 55.9349      abundance 91.75%

            3    mass 56.9354       abundance 2.12%

             4    mass 57.9333      abundance 0.28%

average atomic mass = (53.94 x 0.0585) + (55.9349 x 0.9175) + (56.9354 x 0.0212) + (57.9333 x 0.0028)

average atomic mass = 3.155 + 51.32 + 1.207 + 0.1622

average atomic mass = 55.84 u. The element is Iron

4 0
3 years ago
What is the [H+] if the pH of a<br> solution is 7.60?<br> [H+] = [? ] × 10¹2]
stich3 [128]

Answer:

0.000000025

Explanation:

[H+]=10^-pH

7 0
2 years ago
From the list of substances selected, Naci and NH4CL are good electrolytes because they will form ions in soluti True False​
luda_lava [24]
True. NH4CL is an ionic compound, and salts are strong electrolytes.
6 0
3 years ago
18.) CCC Energy and Matter Photovoltaic power from solar panels and biomass
gogolik [260]

Answer:

See Explanation

Explanation:

Renewable energy sources refers to those energy sources that can never be depleted. This means that they can be used severally without getting exhausted. Solar, biomass, wind and hydroelectric power are all renewable energy sources.

Hence, from the perspective described above, we can say that wind is a form of solar energy because wind is formed when the air is heated by the sun.

Hydroelectric power is driven by the water cycle. This water cycle somehow depends on the sun to run efficiently. So, hydroelectric power can also be considered to be a form of  solar energy.

5 0
3 years ago
WHO IS GOOD AT CHEMISTRY EQUATIONS? I NEED A QUESTION ANSWERED BY TONIGHT! ITS THE ONLY ONE IM STUCK ON:
sattari [20]

Answer:

374 atoms would be present in 22 units of aluminum sulfate.

Explanation:

Formula for Aluminium Sulfate :  Al₂(SO₄)₃

Al = 2

S = 1

O = 4

(SO) = 3

∴ Number of atom in one unit is :  2 + (1+4)3 ==> 17

If there are 17 atoms in one unit, therefore;

Number of atoms in 22 units = 17 x 22

                                                = 374 atoms

4 0
3 years ago
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