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Harlamova29_29 [7]
3 years ago
12

What is the atomic number of this atom?

Chemistry
2 answers:
PIT_PIT [208]3 years ago
6 0

Answer:

2?????

Explanation:

Elodia [21]3 years ago
4 0
The atomic number is b
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kicyunya [14]
<span>LiOH+HBr---> LiBr +h20. Moles of LiOH = 10/24 = 0.41moles. According to stoichiometry, moles of LiOH = moles of LiBr = 0.41moles. Therefore mass of LiBr =moles of LiBr x molecular weight of LiBr = o.41 x 87 = 35.67g. Hope it helps </span>
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3 years ago
What kind of matter is smoke
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The answer is C.

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8 0
3 years ago
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___________ have a charge of +1.
stiv31 [10]

Answer:

B) Protons

Explanation:

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3 0
3 years ago
How many kilojoules are released when 116 g of Cl2 reacts with silicon? Si(s)+2Cl2(g)→SiCl4(g)ΔH=−657kJ
alexandr402 [8]

Answer:-  537 kJ of heat is released.

Solution:- For the given equation, \Delta H is -657 kJ and the coefficient of Cl_2 in the balanced equation is 2. It means 657 kJ of heat is released when 2 moles of chlorine are used. We need to calculate the heat released when 116 g of Cl_2 are used.

Grams of chlorine are converted to moles and then multiplied by the \Delta H value and divided by the coefficient of chlorine and the set could be shown using dimensional analysis as:

116gCl_2(\frac{1mol}{70.9g})(\frac{657kJ}{2mol})

= 537.46 kJ

If we use the correct sig figs then it needs to be round off to three sig figs as the given grams of chlorine has only three sig figs. So, 537 kJ of heat is released.

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2 years ago
In an aqueous solution of a certain acid with pka = 3.75 the ph is 2.82 . calculate the percent of the acid that is dissociated
Arturiano [62]
Hello! Let me try to answer this :)

Thanks and please correct if there are any mistakes ^ ^

8 0
3 years ago
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