How many neutrons does element X have if its atomic number is 22 and its mass number is 99?

A vial of amoxicillin contains 500 mg in 2.0 mL of solution. What volume of the solution contains 180 mg of the drug

If you feed 100 kg of N2 gas and 100 kg of H2 gas into a reactor. What is the excess reactant?

What is equality and how is it used to write conversion factor

How many electrons are in an Fe2 + ion? (1) 24 (3) 28 (2) 26 (4) 56

When you dissolve covalent compounds in water, the molecules tend to stick together but if you dissolve ionic compounds in water, the formula units tend to disassociate. What can you infer about which type of bond is stronger?

3. A compound was analyzed and found to contain 9.8 g of nitrogen, 0.70 g of hydrogen, and 33.6 g of oxygen. What is the empirical formula of the compound?

A 126-gram sample of titanium metal is heated from 20.0°C to 45.4°C while absorbing 1.68 kJ of heat. What is the specific heat of titanium?

What pressure (in atm) will a sample of o2 gas occupy at 100.0 ml, if o2 has a volume of 25.00 ml at 2.0 atm?

What happens when francium and nitrogen are mixed

Which type of chemical reaction occurs in 2KClO3 Right arrow. 2KCl + 3O2