Answer:
Chris.
Explanation:
When water reaches a certain temperature, it starts to boil and lets off steam, decreasing the volume. When water freezes, however, it increases in volume. Therefore, Chris would have a greater volume of water.
An atom has a net zero electric charge if the number of protons and electrons it contains are the same.
Answer:
7.680 mol Pt Se aptse.
Convert 0.400 moles of BF3 to molecules.
0.400 mal BF3 x 6.02x 18 molecules BF3 = 2.4px 10.
Answer:
728.9 torr
Explanation:
Collecting a gas over water results in gathering a mixture of gases. First of all, the target gas is collected, but the gathered sample also contains saturated water vapor.
The saturated water vapor always produces the same pressure which depends on temperature. At a given temperature of 23 degrees Celsius, the saturated vapor pressure is equal to 21.1 torr.
The total pressure is equal to the sum of partial pressures of water and hydrogen:

Solving for the partial pressure of hydrogen:

Answer:
Electron bonds break and reattach to other atoms
Explanation:
Most chemical reactions involve the breaking of bonds