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Sladkaya [172]
3 years ago
7

What is the formula of the compound vanadium(V) oxide? Use the list of polyatomic ions and the periodic table to help you answer

.
A.
VO2
B.
VO5
C.
V5O2
D.
V2O5
E.
V2O2
Chemistry
2 answers:
Vaselesa [24]3 years ago
7 0

Answer:

d

Explanation:

kotegsom [21]3 years ago
5 0

Answer:

D. V2O5

Plato Userssssss

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Answer:

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If a substance has a half life of 58 years and starts with 500 g radioactive, how much remains radioactive after 30 years?
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Answer:

A = 349 g.

Explanation:

Hello there!

In this case, since the radioactive decay kinetic model is based on the first-order kinetics whose integrated rate law is:

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We can firstly calculate the rate constant given the half-life as shown below:

k=\frac{ln(2)}{t_{1/2}} =\frac{ln(2)}{58year}=0.012year^{-1}

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A=500g*exp(-0.012year^{-1} *30year)\\\\A=349g

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See the answer below , please.

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