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Feliz [49]
3 years ago
9

Please help I’m torn between A and B. I’ve asked many and people say A, but I asked my science teacher and she said B. And also

I’ve researched and on answers.com also says Water is the better insulator..but idk I’m conflicted! APEX

Chemistry
1 answer:
Vladimir79 [104]3 years ago
8 0
Just choose one of them. Getting one question wrong isn't the end of the world.

I suggest water.
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Can someone help me with this?
Rudik [331]
Yeah so you have to start of with converting your first two values into moles (forget the third one)

97.5 g NO * 1 mol/30.01 g NO = 3.25 moles NO

88.0 g O2 * 1 mol/16.00 g O2 = 5.5 moles O2

now we can find the limiting reactant by checking for the amount of product each reactant should give us by using molar ratios

3.25 mol NO * 2 mol NO2/2 mol NO = 3.25 mol NO2

5.5 mol O2 * 2 mol NO2/ 1 mol O2 = 11

so NO is the limiting reactant since it produces less product/gets used up quicker

3.25 mol NO * 2 mol NO2/2molNO = 3.25 mol NO2

so this is our theoretical yield and the question provides us with the actual yield (2.68 moles). since the actual yield is given in moles, we don't have to convert to grams. our percent yield formula goes like: actual yield/theoretical yield * 100

2.68 mol/3.25 mol * 100 = 82.46%
4 0
3 years ago
What is an element in science
s2008m [1.1K]
An element is <span>a part or aspect of something abstract, especially one that is essential or characteristic. I hope this helps you good luck :)</span>
5 0
3 years ago
Read 2 more answers
Which answer best completes the following sentence?Moseley's assertions about the arrangement of elements actually _____ Mendele
trapecia [35]
A. Disproved is the correct answer to your question.
3 0
3 years ago
Carbon tetrachloride reacts at high temperatures with oxygen to produce two toxic gases, phosgene and chlorine.CCl4(g) + (1/2)O2
Elodia [21]

Answer : The value of K'_c for the reaction is, 1.9\times 10^{19}

Explanation :

The given equilibrium reactions are:

(1) CCl_4(g)+\frac{1}{2}O_2(g)\rightleftharpoons COCl_2(g)+Cl_2(g)       K_c=4.4\times 10^9

(2) 2CCl_4(g)+O_2(g)\rightleftharpoons 2COCl_2(g)+2Cl_2(g)      K'_c=?

As we know that,  when we are multiplying the equation (1) by 2 then we get the equation (2). Thus, the relation between the two equilibrium constant will be,

K'_c=(K_c)^2

So,

K'_c=(4.4\times 10^9)^2

K'_c=1.9\times 10^{19}

Therefore, the value of K'_c for the reaction is, 1.9\times 10^{19}

5 0
3 years ago
Calculate the ionization energy of doubly ionized lithium, li2+, which has z=3.
GrogVix [38]
<span>Answer: I'm assuming the question is asking when it "jumps" from level 2 to level 1. In which case: 1/λ = Rh(1/nf^2 - 1/nfi^2) = 1.10x10^7 (1/1^2 - 1/2^2) = 1.10x10^7 ( 1 - 0.25) = 1.10 x10^7 (0.75) λ = 1.21 x 10^-7 m The wavelength produced will be about 1.21 x 10^ -7 m, or 121 nm.</span>
6 0
3 years ago
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