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beks73 [17]
3 years ago
11

HELP!! ASAP!! WILL MARK BRAINLIEST!!!

Chemistry
2 answers:
andriy [413]3 years ago
6 0

Answer:

A

Explanation:

Lunna [17]3 years ago
5 0
The answer is A :) hope this help
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4 years ago
Which of the following is not a polymer<br>A. Glucose.<br>B. Starch.<br>C. Cellulose.<br>D. DNA.
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Answer:

A. Glucose

Explanation:

Glucose is a monomer and not a polymer. So, option (A) is not a polymer.

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What is the mole fraction of solute in a 3.19 m aqueous solution?
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Molality= mol/ Kg

if we assume that we have 1 kg of water, we have 3.19 moles of solute. 

the formula for mole fraction --> mole fraction= mol of solule/ mol of solution

1) if we have 1 kg of water which is same as 1000 grams of water. 

2) we need to convert grams to moles using the molar mass of water 

molar mass of H₂O= (2 x 1.01) + 16.0 = 18.02 g/mol

1000 g (1 mol/ 18.02 grams)= 55.5 mol

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3 years ago
Atomic number and atomic mass
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Answer:

Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

Explanation:

hope it help u make me brainlist

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FAST I NEED THIS TO STUDY MY QUIZ IS TOMORROW!!!!
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Answer:

The atomic number equals the charge on the nucleus. It therefore also equals the number of protons in the nucleus and also equals numerically the number of electrons in the neutral atom. The atomic number has the symbol Z.

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