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just olya [345]
3 years ago
10

What royal scientist used the 29th

Chemistry
1 answer:
olchik [2.2K]3 years ago
8 0

J. Dorman probably was the scientist.

I have a question too. Can you please help me with that? I have a test tomorrow. Thank you!

1. True or False? When you charge your laptop, you are separating charges in the laptop battery.


2. True or False? When you use your laptop, the battery becomes more neutral as it runs low on power.

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Which particle model diagram represents xenon at stp?
Readme [11.4K]

The model that should show the corresct representation of xenon gas is one in which the gas molecules  are isolated and monoatomic.

<h3>What is a noble gas?</h3>

A noble gas is a member of group 18 of the periodic table. Noble gases are known not to interact with each other and occur as monoatomic particles.

The images are not shown here hence the question is incomplete. However, we do know that any of the models that show individual monoatomic particles is a representation of xenon gas.

Learn more about noble gas: brainly.com/question/2094768

3 0
2 years ago
If the initial [NO2] is 0.260 M, it will take ________ s for the concentration to drop to 0.150 M. If the initial is 0.260 , it
Nitella [24]

The question is incomplete, here is the complete question:

At elevated temperature, nitrogen dioxide decomposes to nitrogen oxide and oxygen gas

NO_2\rightarrow NO+\frac{1}{2}O_2

The reaction is second order for NO_2 with a rate constant of 0.543M^{-1}s^{-1} at 300°C. If the initial [NO₂] is 0.260 M, it will take ________ s for the concentration to drop to 0.150 M

a) 1.01    b) 5.19     c) 0.299      d) 0.0880     e) 3.34

<u>Answer:</u> The time taken is 5.19 seconds

<u>Explanation:</u>

The integrated rate law equation for second order reaction follows:

k=\frac{1}{t}\left (\frac{1}{[A]}-\frac{1}{[A]_o}\right)

where,

k = rate constant = 0.543M^{-1}s^{-1}

t = time taken  = ?

[A] = concentration of substance after time 't' = 0.150 M

[A]_o = Initial concentration = 0.260 M

Putting values in above equation, we get:

0.543=\frac{1}{t}\left (\frac{1}{(0.150)}-\frac{1}{(0.260)}\right)\\\\t=5.19s

Hence, the time taken is 5.19 seconds

6 0
3 years ago
A student doing this experiment accidently spilled some of the previously measured copper chloride solution on his hands. he did
Orlov [11]

Answer:

The number of moles of the chemical constituents will be less than the actual amount.

Explanation:

In calculating empirical formula, we begin with the number of grams of each element, given in the problem.

Given that the spill will affect the mass concentration of the copper chloride solution, calculations to determine the molecular formula (using Molarity = mass conc ÷ molecular mass ) would give a lesser result, which would in turn lower the number of moles of the copper and chloride in the empirical formula calculation.

8 0
3 years ago
Please help! This is for chemistry!!!!
schepotkina [342]

Answer:17.9 grams

Explanation:I took the quiz

Hope this helps

3 0
2 years ago
Tetraphosphorus decaiodide is represented by which formula? A) P3I10 B) P4I10 C) P3I8 D) P4I8
oksano4ka [1.4K]
The answer is B.

Tetraphosphorus is written as P4, and decaiodide as I10, so when you put them together, it's P4I10
3 0
3 years ago
Read 2 more answers
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