When you mixed 20 grams of magnesium and an excess of nitric acid, 1.7 grams of hydrogen was actually produced. What is the percent yield of hydrogen during this reaction?

Mg + 2HNO3 Mg (NO3) 2 + H2

3.3 %

48.5 %

25.7 %

102 %

98 %

In Experiment 1, the density of pure ethanol was found to be:Question 1 options:less than 0.793 g/mL. 0.793 g/mL. 0.999 g/mL. greater than 0.999 g/mL.

If the acetylene tank contains 37.0 moles of c2h2 an oxygen tank contains 81.0 moles of o2 what is the limiting reactant for this reaction

Atom neutral subatomic particle found in the nucleus of the atom 2. elements the smallest whole unit of matter 3. radioactive elements negatively charged, subatomic particle 4.

If temperature is increased, the number of collisions per second .

What is the relationship between anabolic and catabolic pathways?

Which substance is the oxidizing agent in this reaction? 2CuO+C→2Cu+CO2 Express your answer as a chemical formula.

Why does the light bulbs have to be part of the loop in order for it to be succesful?

Which best describes the transition from gas to liquid? Energy must be removed because particles in liquid move more slowly. Energy must be added because particles in liquid move more quickly.

Calculate the mass of a 0.255-ml sample of a liquid with density 0.660 g/ml.

Which statement correctly describes the interaction between magnetic poles? North and south poles attract each other. North and south poles repel each other. Two north poles will attract each other. Two south poles will attract each other.