3.

Chemistry

1 answer:

kari74 [83]3 years ago

7 0

Answer:

Explanation:

Elements in the same group of the periodic table do not have the same atomic size.

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5 advantages of storing oil underground in salt dome?

jasenka [17]

Answer:

Salt domes storage has advantages in cost, security, environmental risk, and maintenance. Salt formations offer the lowest cost, most environmentally secure way to store crude oil for long periods of time. Stockpiling oil in artificially-created caverns deep within the rock-hard salt costs historically about $3.50 per barrel in capital costs. Storing oil in above ground tanks, by comparison, can cost $15 to $18 per barrel - or at least five times the expense. Also, because the salt caverns are 2,000-4,000 feet below the surface, geologic pressures will sea; any crack that develops in the salt formation, assuring that no crude oil leaks from the cavern. An added benefit is the natural temperature differential between the top of the caverns and the bottom - a distance of around 2,000 feet; the temperature differential keeps the crude oil continuously circulating in the caverns, giving the oil a consistent quality.

4 0

3 years ago

Which of these reactions can be classified as double replacement reactions?

Kryger [21]

1) Zn + 2 HCl = ZnCl2 + H2 ( single replacement )

2) 2 NaCl + F2 = 2 NaF + Cl2 ( single replacement )

3) 2 AlBr3 + 3 K2SO4 = 6 KBr + Al2(SO4)3 ( double replacement )

4) 2 K + MgBr2 = 2 KBr + Mg ( single replacement )

Answer 3

hope this helps!

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3 years ago

There are always attractive forces between a collection of atoms or molecules which may not be negligible as suggested by the ki

Harrizon [31]

Answer:

Negligible

Explanation:

According to the kinetic theory of gases, the degree of intermolecular interaction between gases is minimal and gas molecules tend to spread out and fill up the volume of the container.

If the attraction between gas molecules increases, then the volume of the gas decreases accordingly. This is because, gas molecules become highly attracted to each other.

This intermolecular attractive force may be so strong, such that the actual volume of the gas become negligible compared to the volume of the container.

7 0

3 years ago

To three significant digit,what is the mass percentage of iron in the compound Fe2O3

svlad2 [7]

69.9%

Explanation:

To find the mass percentage of iron in the compound in Fe₂O₃, we would go ahead to express the given molar mass of the iron to that of the compound.

Mass percentage = $\frac{molar mass of Fe}{Molar mass of Fe_{2}O_{3} }$ x 100