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Norma-Jean [14]
2 years ago
5

An element has a half-life of 30 years. if 1.0 mg of this element decays over a period of 90 years, how many mg of this element

would remain?
Chemistry
1 answer:
labwork [276]2 years ago
6 0

Answer:

144.6

Explanation:

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MArishka [77]
Answer:

C

Explanation:

Smooth muscles are in the digestive system, skeletal muscles are the ones we voluntarily move, and cardiac muscles are for the heart.
7 0
2 years ago
When a suspension of algae is incubated in a flask in the presence of light and CO2 and then transferred to the dark, the reduct
Aloiza [94]

Answer:

The photosynthesis process is interrupted.

Explanation:

Algae produce energy using the photosynthesis process. The reduction of 3-phosphoglycerate to glyceraldehyde 3-phosphate is part of this process. Despite this reduction reaction being light-independent (Calvin Cycle), the precursors of this reaction are synthesized in light-dependent steps.

This is the reason why the reduction is blocked when the algae is placed in the dark.

8 0
3 years ago
How many protons and electrons are there in a neutral atom of lithium<br> Np=Ne
pantera1 [17]

Answer:

3 protons and also 3 electrons

Explanation:

z=p=e

3 0
3 years ago
What is the Increase of angles between two bones
Diano4ka-milaya [45]
The increase of angles between two bones is and ankle
5 0
3 years ago
An aqueous solution of a soluble compound (a nonelectrolyte) is prepared by dissolving 33.2 g of the compound in sufficient wate
Alecsey [184]
M=n(pie)/RT
n=osmotic pressure(1.2 atm)
M=molar  of the  solution
R=gas  constant(0.0821)
T=  temperature  in  kelvin 25+273
M=[1.2atm /(0.0821L atm/k mol x  298k)]=0.049mol L
M= moles  of  the  solute/ litres  of solution(250/1000)
0.049=  y/0.25
moles  of  solute is therefore =0.01225mol
molar  mass=33.29 g/0.01225mol=2.7 x10^3g/mol


6 0
3 years ago
Read 2 more answers
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