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4 years ago

What determines the path that an object in projectile motion follows?

Chemistry

2 answers:

oksano4ka [1.4K]4 years ago

8 0

Answer:

Gravity

Explanation:

A projected object moves under the influence of gravity (acceleration at 9.8 m/s squared). The movement of the projected object takes a parabola shape, that is it undergoes vertical and horizontal motion.

mash [69]4 years ago

5 0

Projectile motion is a form of motion where an object moves in a parabolic path; the path that the object follows is called its trajectory. Projectile motion only occurs when there is one force applied at the beginning of the trajectory, after which the only interference is from gravity. So, the trajectory is influenced by gravity and also by the air resistance.

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How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?

Alenkinab [10]

Answer:

3.0 moles.

Explanation:

It is a stichiometry problem.

The chemical reaction of reacting hydrogen with oxygen to produce water is:

H₂ + 1/2 O₂ → H₂O.

It is clear that 1.0 mole of H₂ reacts with 0.5 mole of O₂ to produce 1.0 mole of water.

The ratio of the reacting hydrogen to the produced water is 1:1.

∴ The number of moles of water created from reacting 3.0 moles of hydrogen completely with excess oxygen = 3.0 moles.

4 0

4 years ago

A protein denatures when you cook it at 60°C. What is that temperature on the

seropon [69]

Answer:

333K

Explanation:

Answer is actually 333.15, but to round it off, is 333

7 0

3 years ago

A 544 mg of a mixture of fluorene and benzoic acid was weighed out and subjected to an extraction and recrystallization. After t

butalik [34]

Answer: The percent composition of fluorene is 33.08 % and benzoic acid is 36.03 %.

Explanation:

We are given:

Mass of mixture = 544 mg

Mass of fluorene after purification = $1.80\times 10^2mg=180mg$

Mass of benzoic acid after purification = 196 mg

To calculate the percentage composition of a substance in a mixture, we use the equation:

$\%\text{ composition of substance}=\frac{\text{Mass of substance}}{\text{Mass of mixture}}\times 100$

For fluorene:

$\%\text{ composition of fluorene}=\frac{180}{544}\times 100=33.08\%$

Hence, the percent composition of fluorene is 33.08 %

For benzoic acid:

$\%\text{ composition of benzoic acid}=\frac{196}{544}\times 100=36.03\%$

Hence, the percent composition of benzoic acid is 36.03 %

5 0

4 years ago

What method would you use to find the volume of an irregularly shaped object?

dimulka [17.4K]

Displacement, usually the method that is used to measure the volume of an irregularly shaped object.

4 0

4 years ago

According to valence bond theory, which orbitals on N and H overlap in the NH3 molecule? 2p on N overlaps with 2s on H 2s on N o

Alecsey [184]

Answer:

$sp^{3}$ on N overlaps with 1s on H.

Explanation:

Hybridization of central atom generally can be found by finding the hybridization number.Hybridization number is the sum of number of lone pairs and number of sigma bonds.

If hybridization number is 2 then the central atom is sp hybridized.

If it is 3 it is $sp^{2}$ hybridized.

If it is 4 it is $sp^{3}$ hybridized and so on.

Here in $NH_{3}$ molecule there are 3 sigma bonds and one lone pair(see the figure attached).

Hence hybridization number is 4 and hence it is s $p^{3}$ hybridized.

And in case of hydrogen atom the only electron of it resides in the 1s orbital.

Therefore $sp^{3}$ on N overlaps with 1s on H.

8 0

4 years ago