The atomic number of boron is 5. what is the mass number of a boron atom with 4 neutrons?

What is the chemical formula for the ternary compound composed of co3 + and so42 - ions? coso4 co3 (so4) 2 co2so4 co2 (so4) 3 none of the above?

If 6.42 g of water is produced, how many grams of oxygen gas reacted?

What form of energy is created when an athletic runs?

what is the ratio of C12H22O11

In terms of disorder and energy, systems in nature have a tendency to undergo changes toward less disorder and lower energy less disorder and higher energy greater disorder and lower energy greater disorder and higher energy

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.