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Otrada [13]
3 years ago
7

Please help with this question!

Chemistry
2 answers:
Arada [10]3 years ago
7 0
The Volume is 19g/cm3
Nookie1986 [14]3 years ago
7 0
The answer is 19g/cm
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The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The half-life of phosphorus-32 is 1
Harman [31]

Answer:

54 days

Explanation:

We have to use the formula;

0.693/t1/2 =2.303/t log Ao/A

Where;

t1/2= half-life of phosphorus-32= 14.3 days

t= time taken for the activity to fall to 7.34% of its original value

Ao=initial activity of phosphorus-32

A= activity of phosphorus-32 after a time t

Note that;

A=0.0734Ao (the activity of the sample decreased to 7.34% of the activity of the original sample)

Substituting values;

0.693/14.3 = 2.303/t log Ao/0.0734Ao

0.693/14.3 = 2.303/t log 1/0.0734

0.693/14.3 = 2.6/t

0.048=2.6/t

t= 2.6/0.048

t= 54 days

3 0
3 years ago
The theoretical yield for a reaction is 55.9 g LiCl. The actual yield is 24.6 g LiCl. What is the percent yield of the reaction?
xenn [34]
In chemical reactions, the actual yield is not the same as the expected yield . Actual yield is lower than the theoretical yield . Then we have to find the yield percentage. To see what percentage of the theoretical yield is the actual yield.
Percent yield = actual yield / theoretical yield x 100%
Percent yield = 24.6/55.9 x100%
Percent yield = 44%
7 0
3 years ago
Read 2 more answers
Which atom would be expected to have a half-filled <br> 3d subshell?
lana66690 [7]

Answer:

Manganese: Mn

Explanation:

The elestron configuration would show this is 25 electrons

Atomic number : 25

this electron configuration ends in 3d^{5}

half of the d subshell which is 10

6 0
3 years ago
How does inertia affect a person who is not wearing a seatbelt during a collision?
olya-2409 [2.1K]
During a collision, the person would most likely experience the same conditions with or without a seatbelt.
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3 years ago
Consider the energy transfers and transformations that occur when a person rides a bicycle. Describe thi
cupoosta [38]

Answer:

1.B

2.A

3.B

Explanation:

7 0
2 years ago
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