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Tpy6a [65]
3 years ago
5

What type of rock is pumice? Describe how a pumice rock is likely to change over a long period of time.

Chemistry
1 answer:
Crank3 years ago
3 0

Answer:

Igneous rock

Explanation:

Over time, with intense heat and pressure, pumice stone will break down and crumble and scatter about, or become more compact, forming a new type of rock.

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When comparing the two chair conformations for a monosubstituted cyclohexane ring, which type of substituent shows the greatest
Klio2033 [76]

Large substituents will chose equatorial conformation over axial conformation more readily.

<h3><u>Explanation</u>:</h3>

The axial conformation of the monosubstituted cyclohexane molecule is the Conformation where the substituted group is located along the axis of the molecule, perpendicular to the plane of the molecule. The equatorial conformation on the other hand is the substituted group being aligned along the plane of the molecule.

Now, in the axial position, the large groups will face steric hindrance with the axial hydrogens of the other carbon atoms which will lead the molecule more unstable. So larger is the group, more is the steric hindrance. So larger group will prefer the equatorial conformation more readily than the axial conformation.

6 0
3 years ago
What is the speed of a car traveling east 85 miles over 45 minutes ? 0.5 mph
nikitadnepr [17]

Answer:

1.9 miles per minute

Explanation:

The speed of a substance can be calculated by using the formula:

S = d/t

Where;

S = speed (m/s)

D = distance (m)

t = time (s)

In this question, the units for the distance and time are miles and minutes respectively. Hence, the speed is:

S = 85miles ÷ 45 mins

S = 1.888 miles/min

S = 1.9 miles per minute

6 0
3 years ago
What do methanol (CH2O), ethanoic acid (C2H4O2), and glucose (C3H6O3) all have in common?
tatyana61 [14]

Answer:

d

Explanation:

Carbohydrates are compounds containing carbon, hydrogen, and oxygen. Therefore, a is true.

An empirical formula is the simplest ratio of atoms present in a compound. Therefore, C2H4O2 and C3H6O3, (if you simplified them like you would a fraction) would be CH2O. Therefore b is correct,

They also have the same % composition, with a ratio of 1 carbon : 2 hydrogen : 1 oxygen. Therefore, c is correct.

Since a, b and c are all correct, the answer is d, all of the above are true.

6 0
4 years ago
If an ion has 22 protons and 18 electrons, then what is its charge?
son4ous [18]
It has a positive charge, 22-18= +4
3 0
4 years ago
Read 2 more answers
Heat flows fromsubstances
Zanzabum

Answer:

Heat flows from the lower-temperaturesubstance to the higher-temperaturesubstance. Heat does not flowbecause both substances are at the same temperature. ... Heat is the energy that flows between twosubstances of different temperatures.Heat is the energy that flows between two substances of different temperatures.

3 0
3 years ago
Read 2 more answers
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