What element on the periodic table has a mass number of 155 and 99 for the number of electrons

Write the balanced equation for the synthesis of dinitrogen tetroxide gas from nitrogen dioxide

A gas occupies 2240.0 l at 373 k. what are the volumes at standard temperature answers

5 moles of a monatomic gas has its pressure increased from 105 Pa to 1.5*105 Pa. This process occurs at a constant volume of 0.1 m3. How much work is done by the gas?

Which species are present in greater concentration if K for a reaction is much less than 1? nce sen reactants products

Which best describes how scientific procedure instructions should be written for others? They should be written clearly. They should be written partially. They should include opinions.

Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+charge. How are these two alike? How are they different? Be sure to use the terms proton, neutron, and electron in your answer.

What subatomic particle is specifically responsible for combining the atoms together to form a new substance?

A chemist reported that 100 gallons of a gas were available in a laboratory. Which property of the gas did the chemist report?

Is the water density higher than the aluminum density

How many moles of molecular oxygen (o2) are consumed in the complete combustion of one mole of pentane (c5h12) ?