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Otrada [13]
3 years ago
14

What is the Lewis structure for NbBr5

Chemistry
1 answer:
Artist 52 [7]3 years ago
3 0

Answer:

Explanation:

add lone pairs on the outer bromines.

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A student performs a reaction that makes aluminum oxide. According to her calculations, she should expect to make 115.2 grams. S
tiny-mole [99]

Answer:

The percentage of the student is 58.17%.

Explanation:

Expected yield of aluminum oxide = 115.2 g

Actual yield of aluminum oxide produced =66.9 g

The percentage yield is calculated by dividing actual yield by expected yield and then multiplying it with hundred.

Percentage yield:

\frac{\text{Actual yield}}{\text{Expected yield}}\times 100

\% Yield=\frac{66.9 g}{115.2 g}\times 100=58.17\%

The percentage of the student is 58.17%.

7 0
3 years ago
On which of the following factors does the amount of energy absorbed by an endothermic reaction depend?
Vlad1618 [11]

Answer:

The factors on which the amount of energy absorbed by an endothermic reaction depends are the " physical state of the reactant and the difference in the potential energy of the reactant and the product".

Explanation:

In an endothermic reaction the factors that affects the reaction are  the physical state of the reactant, which thus becomes the enthalpy. And the difference in potential energy of the reactant because if the sum of the potential energy is less than the sum of the potential energy of the product than the endothermic reaction will be positive and the reaction hence will be endothermic.

       \delta H= \delta H_{Product}- \delta H_{Reactant}

7 0
3 years ago
Read 2 more answers
Vanillin (used to flavour vanilla ice cream and other foods) is the substance whose aroma the human nose detects in the smallest
Rudiy27

Answer:

The cost is $0.063.

Explanation:

First, we need to express the volume of the hangar in liters. We know that 1 ft³ = 28.31 L, so using proportions:

5.0 \times 10^{7} ft^{3} .\frac{28.31L}{1ft^{3} } =1.4 \times 10^{9} L

The amount of vanillin required would be:

1.4 \times 10^{9} L.\frac{2.0\times 10^{-11}g }{1L} =0.028g

Finally, the price for such amount of vanillin is:

0.028g.\frac{ \textdollar 112}{50g}=  \textdollar 0.063

6 0
3 years ago
Animals marking their territory with urine is an example of _______.
sergejj [24]
The answer is competition. It's competition because they are protecting their territory, so their way of protecting or fighting for their territory is to urinate on their territory. By a way of showing that they don't want nobody in their territory.
7 0
3 years ago
What 2 materials mixed together forms a solution?
Charra [1.4K]
Lemonade mix and water

Solvent: Water
Solute: Lemonade mix
3 0
3 years ago
Read 2 more answers
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