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lorasvet [3.4K]
3 years ago
7

8th grade science

Chemistry
2 answers:
eimsori [14]3 years ago
7 0

Answer:

B

Explanation:

morpeh [17]3 years ago
4 0

Answer:

Copper and Iron

Explanation:

Metals, like copper and iron, are good conductors of heat; that is because  metals are bounded by a 'cloud' of free electrons and these electrons can carry easily kinetic energy through the metal

On the other hand, foam and wood are isolators, that is, they are bad conductors of heat.

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An industrial manufacturer wants to convert 175 kg of methane into HCN. Calculate the masses of ammonia and molecular oxygen req
Tema [17]
Given:

175 kilograms of Methane (CH4) to be synthesized into Hydrogen Cyanide (HCN)

The balanced chemical equation is shown below:

2 CH4<span> + 2 NH</span>3<span> + 3 O</span>2<span> → 2 HCN + 6 H</span>2<span>O
</span>
To calculate for the masses of ammonia and oxygen needed, our basis will be 175 kg CH4.

Molar mass:
CH4 = 16 kg/kmol
NH3 = 17 kg/kmol
O2 = 32 kg/kmol

mass of NH3 = 175 kg CH4 / 16 kg/kmol * (2/2) * 17 kg/kmol 
mass of NH3 = 185.94 kg NH3 needed

mass of O2 = 175 kg CH4 / 16 kg/kmol * (3/2) * 32 kg/kmol
mass of O2 = 525 kg

mass of O = 525 kg / 32 kg/kmol * (1/2) * 16 kg/kmol
mass of O = 131.25 kg O 
4 0
3 years ago
What is 5.73 moles in grams
Pani-rosa [81]

I calculated is and the answer is 1272.0600000000002.

I really don't know how to explain it

5 0
3 years ago
PLEASE HELP ASAP ESSAY WORTH 15 POINTS! ONLY GENIUS!
Sliva [168]

Answer:

According to the law of conservation of mass, the mass of reactants will be equal to the mass of the products.

Explanation:

5 0
3 years ago
Isotopes of an element have the same number of ________ and different numbers of ________. neutrons... protons protons... neutro
Ivahew [28]
Protons . . . neutrons
8 0
3 years ago
Whats the difference between a solution and a compound? (sorry if this is funny to ask)
Kipish [7]

Answer:

A compound is just pure  that is composed of elements that are chemically bonded in definite proportions

andd solution is umm well its a homogenous so basically saying

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Explanation:

im not sure how else to explain it haah hope this helped  :P

3 0
3 years ago
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