Cold War Test Joseph McCarthy gained a large amount of popularity during the 1950s when he began accusing many Americans of doing what?
Allying with Vietnam and North Korea
Supporting the Communist Party and the Soviet Union
Supporting Barry Goldwater as he ran for president against Lyndon Johnson
Spying on Americans and giving information to Fidel Castro

Supporting the Communist Party and the Soviet Union

Explanation:

Joseph McCarthy was a Republican Senator from Wiscosin during the 1940s and 1950s. He gained notoriety for believing that there many communist infiltrates at every level of U.S. Society: Hollywood, the army, the government, the political parties, and civil society. The term "Mccarthysm was coined to refer to the belief or idea that a person or a group is a communist sympathizer without enough basis on reality".

3.6mol

Explanation:

The balanced chemical equation of this reaction is given as follows:

Ni + 2HF → NiF2 + H2

Based on the above equation, 2 moles of HF will react to produce 1 mole of NiF2.

According to this question, to make 174 grams of NiF2, we find the number of moles of HF required. However, we first convert the mass value of NiF2 to mole value using;

mole = mass/molar mass

Molar mass of NiF2 = 58.7 + 19(2)

= 58.7 + 38

= 96.7g/mol

mole = 174/96.7

mole = 1.799mol of NiF2

Hence, if 2 moles of HF will react to produce 1 mole of NiF2.

- 1.799mol of NiF2 will require (1.799 × 2) = 3.598

= 3.6mol of HF.