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alexandr1967 [171]
2 years ago
10

How many mL of a 4.50M NaBr solution are needed to make 250 mL of a 0.75M solution of NaBr?

Chemistry
1 answer:
sweet [91]2 years ago
8 0
M1V1=M2V2

(4.50)(x)=(0.75)(250)
(4.50)(x)=187.5
x=41.67 mL
You might want to double check the formula used, but as a chem student I’m confident this is right
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How many moles of tungsten (W,183.85 g/lol are in 415 grams of tungsten?
vladimir1956 [14]

Given mass of tungsten, W = 415 g

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Calculating moles of tungsten from mass and molar mass:

415 g * \frac{1 mol}{183.85 g} = 2.26 mol W

7 0
2 years ago
These little bunnies (A, B, and C) were born in the same litter to the same parents, but they have different traits for the feat
marta [7]

Answer:

Due to random assortment and incomplete dominance of alleles.

Explanation:

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2 years ago
The greatest amount of energy released per gram of reactants occurs during a(1) redox reaction
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The greatest amount of energy released per gram of reactants occurs during a (1) redox reaction, although it should be noted that there are exceptions depending on environment. 
5 0
2 years ago
At 10.°C, 20.g of oxygen gas exerts a pressure of 2.1atm in a rigid, 7.0L cylinder. Assuming ideal behavior, if the temperature
Alja [10]

Answer:

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Explanation:

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Also temperature T2 of 40°C = 313.15 K

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Answer:D

Explanation:

Hope I helped

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2 years ago
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