1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lubasha [3.4K]
3 years ago
12

Pumice is a lightweight rock that sometimes forms when lava is very rich in _____.

Chemistry
2 answers:
Oksi-84 [34.3K]3 years ago
3 0
Answer: gases

(has bubbles in the rock)
tatuchka [14]3 years ago
3 0

This question is incomplete. Here is the complete question:

Pumice is a lightweight rock that sometimes forms when lava is very rich in _____. A. silica B. gases C. feldspar D. volcanic glass

Answer:

The correct answer is option D. volcanic glass.

Explanation:

Pumice stone is a very common stone used for construction or cleaning among other things.

This rock is formed through lava that contains water and gas and comes from the inside of a volcano, so when this lava is thrown out of the volcano it cools and hardens, and is filled with bubbles of volcanic gas.

This type of rock is low density and can float on water.

Given this information we can say that the correct answer is the option D. volcanic glass

You might be interested in
What is the symbol for gold
Slav-nsk [51]
The elemental symbol of gold is denoted on the periodic table as being Au.
5 0
3 years ago
Structure can affect the Ka values for related acids. In the boxes below, draw the complete Lewis structure for a single ion of
Zigmanuir [339]

Answer:

Explanation: see attachment below

8 0
3 years ago
D=___g/mL<br> v=100mL<br> m=1.5kg=___g
Bess [88]

The volume is 100mL.

The mass is 1.5kg which is equal to 1500g.

Thus, the density is 1500g / 100mL which is 15g/mL.

8 0
3 years ago
Elements that have atoms with stable valence electron configurations in the ground state are found in
dsp73

Answer:

Group 18, also known as the Noble Gasses

Explanation:

Atoms strive for full stability by gaining or losing electrons to get 8 valence electrons in their valence shell, but Group 18 already has 8 electrons in their valence shell, and are therefore already stable in their ground state.

5 0
3 years ago
1. If I have 45 L of He in a balloon at 25 degrees celsius and increase the temperature of the
Greeley [361]

Use Charles' Law: V1/T1 = V2/T2. We assume the pressure and mass of the helium is constant. The units for temperature must be in Kelvin to use this equation (x °C = x + 273.15 K).

We want to solve for the new volume after the temperature is increased from 25 °C (298.15 K) to 55 °C (328.15 K). Since the volume and temperature of a gas at a constant pressure are directly proportional to each other, we should expect the new volume of the balloon to be greater than the initial 45 L.

Rearranging Charles' Law to solve for V2, we get V2 = V1T2/T1.  

(45 L)(328.15 K)/(298.15 K) = 49.5 ≈ 50 L (if we're considering sig figs).

7 0
3 years ago
Other questions:
  • I neeeeeeeeeeeddddddddd help!!!
    10·2 answers
  • What is the coded properties of liquid solid and gas​
    11·1 answer
  • Imagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other h
    12·2 answers
  • When earth is closest to the sun, the northern hemisphere is in winter, why is this true?
    11·1 answer
  • Which particle has the same mass as a neutron?
    11·2 answers
  • Which of the following best describes H2(g) + Cl2(g) → 2HCl(9), AH = -184.6
    12·1 answer
  • Which phrase describes runoff?
    5·2 answers
  • Which option correctly describes the pattern of valence electrons on the periodic table? (1 point)
    14·1 answer
  • Because rusting is a spontaneous process under standard conditions, which of the following is a correct conclusion about the pro
    13·2 answers
  • Pickle is not stored in the metal vessel for long time.why?​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!