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Dimas [21]
3 years ago
8

If you start a chemical reaction with 38 grams of reactants, how many grams of a product would

Chemistry
1 answer:
aniked [119]3 years ago
7 0

Answer:

38 g as well due to the law of conservation of mass.

Explanation:

Hello,

In this case, we need to review the law of conservation of mass which states that matter cannot be neither created nor destroyed, thus, for chemical reactions, the mass of reactants at the beginning of the chemical reaction must equal the mass of products at the end in closed systems, that is why, since 38 g is the mass of reactants, the mass of the overall products is also 38 g.

Best regards.

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Answer: The correct option is The properties of a noble gas.

Explanation: There are 7 periods in the periodic table.

The last element of each period are Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo).

  • The electronic configuration for Helium is 1s^2. For He, The outermost electrons are 2.
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All these elements have stable electronic configuration and are not reactive in nature. Hence, they are considered as noble gases.

Therefore, the last element of each period always have the properties of a noble gas.

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3 years ago
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10

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A circuit contains two devices that are connected in parallel. If the resistance of one of these devices is 12 ohms and the resi
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4 years ago
A gas has a pressure of 0.470 atm at 60.0 C. What is the pressure at standard temperature?
OLEGan [10]

Answer:

P2=0.385atm

Explanation:

step one:

Given that the temperature T1=  60 Celcius

we can convert this to kelvin by adding 273k to 60 Celcius

we have T1= 333k

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step two:

we know that the standard temperature is T2= 273K

Applying the temperature and pressure relationship we have

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substituting our given data we have

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cross multiply we have

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3 years ago
How many mg are there in a 5.00 grain aspirin tablet? I grain = 0.00229 oz. There are 454 g/lb.
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Answer: 325 mg

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4 years ago
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