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Jlenok [28]
3 years ago
9

Evidence of a chemical change would be

Chemistry
2 answers:
Elodia [21]3 years ago
4 0
D- Rusting car fender
Charra [1.4K]3 years ago
4 0
ANSWER: D) rusting car fender
HOPE THIS HELPS
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How are radioisotopes different from the standard form of an element
meriva

Answer:

Different isotopes of the same element have the same number of protons in their atomic nuclei but differing numbers of neutrons. Radioisotopes are radioactive isotopes of an element. They can also be defined as atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus.

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Various pieces of safety equipment are used in the lab to provide protection against injury. What piece of lab safety equipment
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A sample of 0.370 mol of a metal oxide (m2o3) weighs 55.45 g. how many grams of o are in the sample?
Wewaii [24]
0.370 mol metal oxide = 55.45 g 

<span>1 mol = 55.45/0.370 = 149.86 g </span>

<span>in 1 mol there are 3 mol O = 16 * 3 = 48 g of O </span>

<span>there is 48/149.86 * 100% O in the sample </span>

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6 0
3 years ago
PLEASE HELP! It'll mean the world to me
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Answer:

24 a 2.85

Explanation:

HCl is a powerful acid so it completely ioniz in water

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