A helium atom has - - - protons & - - - neutrons?

Ethyl acetate reacts with H2, in the presence of a catalyst to yield ethyl alcohol: C4H8O2 + 2H2--> 2C2H6O. A. How many grams of ethyl alcohol are produced by reaction of 2.7 mol of ethyl acetate with H2? B.

A sample of an ore of iron, hematite, is 79% Fe2O3. How much iron is there in 4 kilograms of the ore? Answer in units of g.

Summarize the trend in metallic character as a function of position in the periodic table. Is it the same as the trend in atomic size? Ionization energy?

What is the volume of a gas at 50.0 celsius and 0.80 atm, if there are 0.75 moles of the gas present?

If 5.6 moles of O2 react completely how many moles of NO2 will form

Which type of cell is a rose thorn? prokaryotic eukaryotic plant eukaryotic animal chloroplastic

Which planet has the presence of liquid water, a period of rotation equal to 24 hours, and a solid inner core

At STP, an element that is a brittle solid and a poor conductor of heat and electricity could have an atomic number of (1) 12 (3) 16 (2) 13 (4) 17

Which of the following does not indicate a chemical change? precipitate formation crushing a solid into a powder color change gas evolution

When you heat water, more sugar can be dissolved in it.