On the periodic table there are how many elements that occur naturally

Epsom salt is mgso4·7 h2o. what does the chemical formula become when this hydrate is gently heated?

A? Such as tearing paper or melting chocolate does not change the identity of the substance

A mixture contains 0.5 mol He, 0.09 mol CO2, 0.75 mol O2 and 1.5 mol At. Which gas has the highest partial pressure?

10x4 Thousands = _ Thousands =

Which of the following planets has one moon? O Earth O Jupiter O Neptune Saturn

Four moles of hydrogen chloride (HCl) gas react with one mole of oxygen (O2) gas to produce two moles of chlorine gas (Cl2) and two moles of water gas (H2O).

what noble gas electron configuration is achieved by the bromine atoms in a molecule of BR2, a diatomic element?

What are facts on osmosis?

If a map of temperature displayed stripes parallel to the equator with equal temperatures at equivalent distances north and south of the equator, it would mean that only blank affected temperature.

What is the term for the amount of salts in water? Evaporation Evaporation Salinity Thermocline Density