What type of change occurs when water changes from a solid to a liquid? A. a phase change B. a physical change C. an irreversible change D. both a and b

10 mL of 6 M HCL are diluted to 1 L with distilled water. What is the molarity of the dilute solution?

Sodium (Na) has 11 protons and 12 neutrons. What is its isotope notation? A. Na-11 O B. Na-12 C. Na-23 D. Na-34

Process of genetic engineering

How many grams are in 8.5 moles of h20

As you move from ice to water to steam, which statement is true? A) Temperature, density, and compressibility all increase. B) Temperature, kinetic energy, and compressibility all increase.

Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine B. FeO = iron (|||) oxide C. K↓2O = Phosphorus dioxide D. CuCI↓2 = copper (||) chloride

Which of the following correctly explains the role of enzymes in biochemical reactions? A) Enzymes provide energy in the form of ATP to lower the activation energy needed for the reaction.

How does being a landlord relate to chemistry in any way

Element m has an ellectronegativity of less than 1.2 and reacts with bromine to form the compound MBr2. Element M could be?

Which situation describes evidence of a chemical change? A. When food color is added to water, it changes color. B. A solid changes into liquid when heated. C. A solution feels warm after a cool solid is added to it. D.