CHEMISTRY HIGH SCHOOL

4.What is the volume of 50.0 g of calcium if the density of calcium is .50 g/mL?

Answers

Answer 1
Answer:

Answer: The volume of calcium is 100 ml.

Explanation:

Density is defined as the mass contained per unit volume.

Density=(mass)/(Volume)

Given : Mass of calcium= 50.0 grams

Density of calcium = 0.50g/ml

Putting in the values we get:

0.50g/ml=(50.0g)/(Volume)

Volume=100ml

Thus the volume of calcium is 100 ml.
Answer 2
Answer: Volume = Mass / Density 

50 / 0.5 = 100 ml

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Consider the two facts below:Fact 1: Dissolved oxygen is one of the most
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Which scenarios may be explained by the facts on
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ID There is more dissolved oxygen in colder
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IM
Fact 2: Unlike solids, whose solubility increases
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DONE W

Answers

Answer:

A. There is more dissolved oxygen in colder waters than in warm water.

D. If ocean temperature rise, then the risk to the fish population increases.

Explanation:

Conclusion that can be drawn from the two facts stated above:

*Dissolved oxygen is essential nutrient for fish survival in their aquatic habitat.

*Dissolved oxygen would decrease as the temperature of aquatic habit rises, and vice versa.

*Fishes, therefore, would thrive best in colder waters than warmer waters.

The following are scenarios that can be explained by the facts given and conclusions arrived:

A. There is more dissolved oxygen in colder waters than in warm water (solubility of gases decreases with increase in temperature)

D. If ocean temperature rise, then the risk to the fish population increases (fishes will thrive best in colder waters where dissolved oxygen is readily available).

Answer: the answers are A and D

Explanation:

i got it right

What process occurs in a controlled fusion reaction

Answers

The controlled fusion reaction is a nuclear reaction in which two or more atomic nuclei come very close and then collide at a very high speed and join to form a nucleus. The mass of the new nucleus is slightly less than the sum of its components b an amount known as binding energy.

Each level of energy transfer in an ecosystem or food chain is called a(n) trophic level

energy level

consumer level

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Answers

The correct answer is the first option. Each level of energy transfer in an ecosystem or food chain is called a trophic level. It comprises organisms that share the same function in the food chain in relation to the primary sources of energy.
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Answers

A parent isotope plays an important role in the decay chain process. The parent isotope is the one who undergoes the decay process in the nuclear reaction in order to form its daughter isotope. The daughter isotope may decay on its own and may have its own daughter isotope as well.

Answer:

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Edge 2021

When a covalent bond forms between atoms, electrons are a. lost.
b. gained.
c. shared.
d. transferred.?

Answers

in covalent bonds electrons are shared

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Andy is waiting at the signal. As soon as the light turns green, he accelerates his car at a uniform rate of 8.00 meters/second2. What is the displacement of Andy’s car after 30.0 seconds?

Answers

Answer:

7200 m

Explanation:

This problem is an example of an uniformly accelerated motion, in which the acceleration remains constant. As such, the formula for the displacement is:

D(t) = D₀ + v₀*t + 0.5*a*t²

Where D₀ is the initial displacement, v₀ is the initial velocity (in this case it's 0 m/s), a is the aceleration (8 m/s²) and t is the time, in seconds.

Using a t=30.0 s, we're left with:

D(t) = 0 m + 0 m/s * 30.0 s + 0.5 * 8.00 m/s² * (30.0 s)²

D(t) =  0.5 * 8.00 m/s² * (30.0 s)²

D(t) = 7200 m
1200 m/s squared, assuming the initial velocity is 0.
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