Which indicator has to be used in order to get an emerald green color at a pH of 9?

a) universal indicator

b) methyl orange indicator

c) thymol blue indicator

d) cyanidin

Nitrogen molecules rest with oxygen molecules. Nitrogen monoxide molecules are made. N2 + O2 → 2NO Nitrogen molecules and oxygen molecules react extremely slowly, even at 200°C.

Which type of mixture can be separated using a sieve? A: a homogeneous mixture with components of varying sizes B: a homogeneous mixture with components of the same size C: a heterogeneous mixture with components of the same size D: a heterogeneous

The smallest particle of a substance that has the same properties as the substance is a molecule. True or false?

Nitroglycerin detonates according to the balanced reaction: 4 C3H5N3O9 (l) → 12 CO2 (g) + 6 N2 (g) + O2 (g) + 10 H2O (g). If 150.

As a chemical reaction occurs, the thermometer in the container records an increase in temperature. What is true of the reaction? The reaction is endothermic because heat was taken in by the reaction.

In the reaction of magnesium with oxygen gas, a considerable amount of energy was released. This is an example of an exothermic reaction.

Why does an air bubble rise to the surface of a glass of water?

What term expresses the ratio of moles of reactants and products according to the coefficients in the balanced chemical equation? A) mole ratio B) reactant ratio C) product ratio D) yield ratio E) none of the above

What are some examples of kinetic energy

Under which conditions would the solubility of a gas be greatest? high pressure and high temperature high pressure and low temperature low pressure and high temperature low pressure and low temperature