1. What is the term for a process causing the particles contained in a substance to be packed more closely together?
A. coefficient of expansion
B. contraction
C. expansion
D. packing
E. squeezing

2. A one liter sample of gas is heated under constant pressure from
100°C to 200°C. Its volume increases to 1.27 liters. On further
heating to 300°C, what would the volume of the sample be?
A. 1.00 liter
B. 1.27 liters
C. 1.54 liters
D. 1.81 liters

3. A 5-liter sample of gas initially at 50°C is observed to expand to
5.5 liters when the temperature is raised to 100°C. After further
increase in temperature, the volume is 6 liters. What is the
approximate temperature (within 50 degrees) of the final state of
the gas?
A. 50°C
B. 100°C
C. 150°C
D. 200°C
Please help

1) contraction

2) 1.54 liters

3) 150°C

4) The gas expands proportionally to the increase in temperature

5) false

6) true

7)pentane

8) it has a boiling point around 35°

Explanation:

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72