Limestone, caco3, reacts with hydrochloric acid to form calcium chloride, water and carbon dioxide

according to the following reaction:

caco3(s) + 2hcl(aq) → cacl2(aq) + h2o(l) + co2(g)

how many liters of co2 gas will be formed at 722 torr and 43.0°c by the reaction of 4.35 g limestone

with an excess of hydrochloric acid? assume 100% yield and that the gas is ideal.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.