A sample of tungsten II sulfate contains 4.17 times 10 exponent 24 molecules what is the mass of this sample ??

1937.6g

Explanation:

According to the question, a sample of tungsten II sulphate (WSO4) contains 4.17 × 10^24 molecules. This means that the number of moles can be calculated by dividing the number of molecules by Avagadro's number (6.02 × 10^23).

Number of moles of WSO4 = 4.17 × 10^24 ÷ 6.02 × 10^23

n = 4.17/6.02 × 10^(24-23)

n = 0.692 × 10^1

n = 6.92moles

Where; W = 184g/mol, S = 32g/mol, O = 16g/mol

The molar mass of tungsten II sulphate (WSO4) is calculated as follows;

WSO4 = 184 + 32 + 16(4)

= 184 + 32 + 64

= 280g/mol

mole = mass ÷ molar mass

mass = molar mass (MM) × number of moles (n)

mass = 280 × 6.92

mass = 1937.6g

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.