How many moles of iron in a sample that contains 7.91 x 10^23 atoms of iron?

Is steam a element compound, heterogeneous, mixture, or solution?

During a 4 hour trip, a boat sailed 70 km in 2 h. Then the boat did not move for 1 hour and traveled 26 km in the last hour. What was the boat's average speed?

Which is also called an alpha particle? the nucleus of a carbon atom the nucleus of a nitrogen atom the nucleus of a hydrogen atom the nucleus of a helium atom

01:44:44 If a gas is moved from a large container to a small container but its temperature and number of moles remain the same, what would happen to the pressure of the gas? O It would increase. It would be halved.

Planetesimals are made from A. Rock B. Gas C. Stars D. Clouds

Which of the following is the major advantage of using geothermal energy instead of using coal energy? Choice: You will get a brainliest! If your correct! A. More abundant than coal B. Easier to access than coal C. Releases less carbon dioxide D.

What is berylliums energy levels

What is the SI base unit of temperature? Celsius kelvin coulomb Fahrenheit

What property of an object is expressed by the measurement of an item's mass per unit volume? A. density B. viscosity C. surface tension D. buoyancy

Which type of wave cannot move without a medium in which to travel? Heat waves Light waves Sound waves Transverse waves