A new element with 120 protons and 2 electrons in its outer level in what group does this element belong

Measurements that have similar values are

1. What is an air mass? 1. a large body of air with the same temperature and moisture. 2. any kind of cloud that produces rain, sleet, snow, or hail. 3. a place where weather always changes in an extreme way.

As the nucleus of an unstable atom emits only gamma radiation, the nucleus must

If you mix 40 grams of copper with 60 grams of sulfur, how much copper (I) sulfide (Cu2S) can be produced during the reaction? 2Cu + S → Cu2S

How many particles are in 1 mole of a substance?

Solid lead IV oxide decomposes into solid lead and oxygen gas.

Ab2 has a molar solubility of 3.72*10-4 m. what is the value of the solubility product constant for ab2? express your answer numerically.

Thermal decomposition of sodium azide (NaN₃) into nitrogen gas and sodium metal is used to inflate car airbags. The reaction proceeds by the following chemical reaction. 2NaN₃ (s) ⟶3N₂ (g) + 2Na (s) How many grams of NaN₃ are need to inflate a 10.

Is salt water acidic, basic or neutral

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