HN Midterm Review #3

Front

How many protons are in Sodium?

Back

Sodium has 11 protons.

Front

What is the theoretical yield of CO2 when 24 grams of CH4 reacts with 2O2?

Back

The theoretical yield of CO2 is 66 grams.

Front

What volume of hydrogen is produced at STP by the reaction of 67.3 g of magnesium with excess water?

Back

62L of hydrogen is produced.

Front

What are ions that are formed by gaining or adding electrons called?

Back

Anions are formed by gaining or adding electrons.

Front

How many electrons are in Aluminium?

Back

Aluminium has 13 electrons.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

Define a cation.

Back

A cation is an ion with a positive charge, formed by losing electrons.

Front

What is the molar mass of water (H2O)?

Back

The molar mass of water is approximately 18 g/mol.

Front

What is the balanced equation for the combustion of methane (CH4)?

Back

The balanced equation is CH4 + 2O2 → CO2 + 2H2O.

Front

What is STP in chemistry?

Back

STP stands for Standard Temperature and Pressure, which is 0°C and 1 atm.