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maxonik [38]
3 years ago
9

What is the universal solvent? A. hydrogen B. water C. oil D. acid​

Chemistry
1 answer:
Arada [10]3 years ago
5 0

Answer:

water

Explanation:

because it's capable of dissolving more substances

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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
What is the density of a liquid if it has a mass of 12.9g ?
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Find it on google i’m pretty sure i saw it somewhere so sorry this doesn’t help
4 0
3 years ago
Keera decided to investigate how the growth of plants is affected by the time of day it is watered. She placed an equal amount o
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The time of day the plants are watered is the independent variable. Keera did everything else the same for each plant.
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1 Copy and complete using the words below:
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Answer:

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3 years ago
Colors are in what part of the electromagnetic spectrum?
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"As we move through the visible spectrum of violet, blue, green, yellow, orange and red, the wavelengths become longer. The range of wavelengths (400 - 700 nm) of visible light is centrally located in the electromagnetic spectrum (Fig. 1)."

-https://www.asu.edu/courses/phs208/patternsbb/PiN/rdg/color/color.shtml

6 0
3 years ago
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