2 years ago

What does kinetic energy depends on

1 answer:

4 0

The kinetic energy of an object depends on two factors: mass(m) and velocity(v). The mass of an object can be measured in kilograms(kg) and velocity of the object in meters per second(m/s).

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Students are investigating the relationship between pressure and temperature in gases. They have blown up a balloon with carbon

Ierofanga [76]

Answer:

Explanation:

8 0

3 years ago

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Give the o.N. Of each of the elements magnesium and oxygen in the reactants and in the products 2Mg + O2=2MgO

vlada-n [284]

Answer:

$2Mg^0 + O_2^0\rightarrow2Mg^{2+}O^{2-}$

Explanation:

Hello there!

In this case, according to the rules for the oxidation states in chemical reactions, it is possible to realize that lone elements have 0 and since magnesium is in group 2A, it forms the cation Mg⁺² as it loses electrons and oxygen is in group 6A so it forms the anion O⁻²; therefore resulting oxidation numbers are:

$2Mg^0 + O_2^0\rightarrow2Mg^{2+}O^{2-}$

Best regards!

4 0

2 years ago

Explain why pentane has a higher boiling point than butane

creativ13 [48]

Answer: Larger molecules have stronger London forces.

Explanation:

Pentane therefore has a stronger force than butane.

8 0

2 years ago

Which best describes an element?

Aleonysh [2.5K]

I think the answer is a pure substance

6 0

3 years ago

The half-life of cesium-137 is 30 years. Suppose we have a 200-mg sample. (a) Find the mass that remains after t years.

scZoUnD [109]

Given:

Half life(t^ 1/2) :30 years

A0( initial mass of the substance): 200 mg.

Now we know that

A= A0/ [2 ^ (t/√t)]

Where A is the mass that remains after t years.

A0 is the initial mass

t is the time

t^1/2 is the half life

Substituting the given values in the above equation we get

A= [200/ 2^(t/30) ] mg

Thus the mass remaining after t years is [200/ 2^(t/30) ] mg

5 0

3 years ago