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3 years ago

Which statement best describes how two hydrogen atoms combine to form molecular hydrogen (H2)?

Chemistry

1 answer:

dimaraw [331]3 years ago

8 0

Nope, its A i just took the test
Two neutral hydrogen atoms share electrons in a covalent bond.

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(True or False) A single particle has NO temperature. True False

Elenna [48]

Answer:

True

Explanation:

No, a single particle cannot have a temperature at all, because temperature is a property of a large number of particles.- this is not my own words the website I got it from is https://www.quora.com/Can-a-single-particle-have-any-temperature

6 0

3 years ago

How many grams are in 1.68 x 1026 molecules of CO2? (molar mass=44.01 g/mol) (Hint: You will need to use your entire stoichiomet

TiliK225 [7]

According to Avogadro's law 1 mole contains 6.022 ×10^23 particles
1 mole of carbon = 44.01 g/ mol
Therefore;
44.01 g = 6.022 ×10^23 molecules
Hence, 1.68×10^26 molecules will have a mass of ;
(44.01 × 1.68×0^26) / 6.022×10^23
= 1.228 × 10^4 molecules

3 0

3 years ago

Read 2 more answers

1. If you need to name the alkane C7H16, which prefix and

seropon [69]

The name is heptane. The prefix is hept- , because the longest carbon chain contains seven carbons. The suffix is -ane, because this is the suffix used for all alkanes.

Please mark brainliest if you can!!!

5 0

3 years ago

A student investigates a pure metal, X . The student takes a 100.0 g piece of metal X , heats it to 500.0°C , then places it on

netineya [11]

Answer:

q_metal = -12000 J = -12 KJ

Here, the negative sign indicates that the energy is lost by the metal piece.

Explanation:

The magnitude of energy change of the metal X can be given by the following formula:

$q_{metal} = mC\Delta T$

where,

m = mass of metal = 100 g

C = Specific Heat Capacity of metal X = 0.24 J/g.°C

ΔT = Change in Temperature of Metal Piece = 0° C - 500°C = -500°C

Therefore, using these values in the equation, we get:

$q_{metal} = (100\ g)(0.24\ J/g^oC)(-500^oC)\\$

q_metal = -12000 J = -12 KJ

Here, the negative sign indicates that the energy is lost by the metal piece.

7 0

3 years ago

Density is found by dividing

Artemon [7]

Mass over volume. D= M/V

8 0

4 years ago

Read 2 more answers