Gold has a density of 19.3g/cm3. What is the mass, in grams, of a sample of gold with a volume of 47.2 cm3?

Each of the three known isotopes of hydrogen has blank protons in the nucleus

Define inference and explain how it is used to form conclusions

What will happen to the temperature of a substance if the kinetic energy of the molecules decreases?

Justin added concentrated HCl solution in excess to 45.8 grams of magnesium metal and collected the hydrogen gas that was produced by the reaction. Mg (s) + 2 HCl (aq) → MgCl2 (aq) + H2 (g) If Justin collected 2.

Water (h20) is composed of the same element as hydrogen peroxide (h202) how do their properties compare? They have different properties because the arrangement of atoms is different. They have the same properties because they have the same atoms.

Benzene, C6H8, has an enthalpy of fusion = 10.19 kJ/mol. Calculate the amount of energy which is needed to change 88.0 g of solid benzene at 5.53°C into liquid benzene, also at 5.53°C?

What is the H3O + ion concentration of a solution that has an OH - ion concentration of 1.0 * 10^-3M? A) 1.0 * 10^-3M B) 1.0 * 10^-7M C) 1.0 * 10^-11M D) 1.0 * 10^-14M

Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O In the reaction of 6 moles of CH4 with excess oxygen, how many moles of water could be produced? 6 C 12.01 Carbon 1 H 1.01 Hydrogen 8 O 16.00 Oxygen A. 4 B. 6 C. 8 D. 12

Most mutagens have what kind of an effect on an organism?

According to the hess's law, the enthalpy of solution is: δhsoln = δhsolute + δhsolvent + δhmix. considering dissolving a small drop of nonpolar pentane oil in water which term (s) in the equation will experience the largest enthalpy change.