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sashaice [31]
2 years ago
8

In summary, a heritable characteristic that helps an animal or plant to have more offspring which survive to reproduce will tend

to become more common in a population as a result of evolution by natural selection. PROMPT: Explain why a characteristic which helps an animal to live longer will generally tend to become more common in the population as a result of evolution by natural selection.
Chemistry
1 answer:
aleksklad [387]2 years ago
4 0

A characteristic which helps an animal to live longer will generally tend to become more common in the population because as the animal produces more offspring those traits are passed down to them. Eventually it will be a common characteristic in the population.

Hope that helped :)

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You've made the hypothesis that the higher the density of a rock, the higher the temperature at which will melt, because a dense
Vlad [161]
The independent variable is the one we are changing in the experiment. As we change it, the dependent variable might also change.

C. the density of the rock because we are changing the density of the rock and seeing how all other variables change with regards to the density.
7 0
3 years ago
Read 2 more answers
First, get about 20 mL of the quinine stock solution in a clean beaker to prepare 250 mL of about 2 ppm quinine in 0.05 M H2SO4.
iris [78.8K]

Answer:

Volume of acid, Va=250mL; Volume of quinine,Vb=20mL; Molarity of acid, Ma=0.05M.

Molar mass of acid= H2+S+O4= 2+32+(16X4)= 2+32+64=98g

Concentration of acid, Ca= Molar mass of acid/ Ma =98/0.05=1960g/mol

Explanation: To calculate concentration of quinine, Cb is as follow

Va*Ca=Vb*Cb

∴ Cb=Va*Ca/Vb =250*1960/20 =24500g/mol

5 0
3 years ago
Write the formula and determine the percent by mass of the salt in barium hydroxide octahydrate *
user100 [1]

Answer:

315.51g/mol

Explanation:

137(33 + (16.00 + 1.01) 2 + 8 [1.01 (2) + 16.00] = 315.51g/mol

7 0
2 years ago
199.5 grams unrefined dark crystalline sugar to cups
Dmitry [639]

Answer:

0.9975 cup  

Step-by-step explanation:

"Unrefined dark crystalline sugar" is what non-chemists call "brown sugar."

200.0 g brown sugar = 1 cup

 199.5 g brown sugar = 199.5× 1/200 .0

 199.5 g brown sugar = 0.9975 cup

A standard measuring cup is not capable of this precision and, furthermore, the mass of brown sugar you can get into a cup depends on how tightly you pack it.

Your Mole Day cake will be fine if you use 1 cup of brown sugar as usual.

4 0
3 years ago
1. Most of the chemicals included in your General Chemistry Lab kit can be discarded down a drain. Describe a situation in which
Tju [1.3M]

Answer: Chemicals like acids and bases are harmful and must be neutralized before draining.

Explanation:

A strong acid or strong base is required to be diluted or neutralized before it is discarded in the drain as if is discarded without diluting and neutralization it can spill and splash from sink or drain and can harm people in chemistry lab, moreover the fumes of the discarded chemical on spilling can cause respiratory tract burning and can even cause fire hazard so it must be converted into less harmful form and then must be drained.  

5 0
2 years ago
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