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Talja [164]
3 years ago
9

Which of these is most commonly found in its liquid form? O A. Hydrogen OB. Oxygen O C. Helium O D. Water​

Chemistry
2 answers:
Sergeeva-Olga [200]3 years ago
6 0

Answer:

Water

Explanation:

Greeley [361]3 years ago
3 0

Answer:

C. Helium

Explanation:

At standard pressure, the chemical element helium exists in a liquid form only at the extremely low temperature of −269 °C (about 4 K or −452.2 °F). Its boiling point and critical point depend on which isotope of helium is present: the common isotope helium-4 or the rare isotope helium-3.

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Select the sentence from the section "Cute Beavers Also Cause Trouble" that is MOST important to include in the section's summar
vichka [17]

The section "Cute Beavers Also Cause Trouble" that is MOST important to include in the section's summary is They can also be moved or killed if they cause trouble.

<h3>Are beavers a threat to humans?</h3>

Beavers are not to be creature which are not dangerous if left to be alone. But, they will often confront any threat when they are trapped or cornered, and thus a beaver will attack a human.

Hence, The section "Cute Beavers Also Cause Trouble" that is MOST important to include in the section's summary is They can also be moved or killed if they cause trouble.

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5 0
2 years ago
1. Given the specific heat of lead is 0.129 J/g.C and that it takes 93.4J of energy to
zheka24 [161]

Answer: 40 grams

Explanation:

The quantity of Heat Energy (Q) required to heat a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since Q = 93.4J

M = ?

C = 0.129 J/g.C

Φ = 40.4°C - 22.3°C = 18.1°C

Then, Q = MCΦ

Make Mass, M the subject formula

M = Q/CΦ

M = (93.4J) / (0.129 J/g.C x 18.1°C)

M = 93.4J / 2.33J/g

M = 40 g

Thus, the mass of the lead is 40 grams

8 0
3 years ago
Electronegativity _____. generally increases moving from left to right across a period generally decreases moving from left to r
mojhsa [17]
I believe the correct answer would be that electronegativity generally increases moving from left to right across a period. The periodic table of elements is arranged so that trends of the properties of the elements can be shown. For electronegativity, it decreases from right to left which means for the opposite direction it increases.
7 0
3 years ago
Read 2 more answers
What is the mass number of an atom that has 12 neutrons and 11 protons?
Tamiku [17]
Mass number = protons + neutrons. 12 + 11 = 23.
5 0
3 years ago
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If two electrons are removed from beryllium during a reaction, which energy level becomes the valence shell?
tino4ka555 [31]

Explanation:

After the electron configuration, the last shell of the beryllium atom has two electrons. In this case, both the valence and valence electrons of beryllium are 2. We know the details about this. The elements that have 1, 2, or 3 electrons in the last shell donate the electrons in the last shell during bond formation.

3 0
3 years ago
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