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Lisa [10]
3 years ago
7

What are the coefficients for the following reaction when it is properly balanced? ?potassium iodide +?lead (II) acetate lead (I

I) iodide +-potassium acetate 3,2,2,1 1,1,2,2 none of these
Chemistry
1 answer:
xeze [42]3 years ago
7 0

Answer: none of the above

Explanation:

It should be 2,1,1,2 to give a balanced chemical reaction

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The correct lewis structure for COH2 contains how many covalent bonds?
VARVARA [1.3K]

Answer:

Four covalent bonds.

Explanation:

Hello,

In this case, given the attached picture in which you can find the Lewis dot structure for metanal (formaldehyde) we can see two C-H bonds and two C-O bonds via a double bond, thus, we can compute the type of each bond given the electronegativities of hydrogen, carbon and oxygen which are 2.1, 2.5 and 3.5 respectively:

C-H=2.5-2.1=0.4\\C-O=3.5-2.5=1.0

Thus, since both electronegativity difference are less 1.7 we infer that all of them are covalent, therefore, it has four covalent bonds, two C-H bonds and a double C-O bond.

Best regards-

8 0
3 years ago
Introduction:
Alex777 [14]

Answer:

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8 0
3 years ago
Read 2 more answers
Mg + 2AgNO3 -> 2Ag + Mg(NO3)2
9966 [12]

Answer:

Explanation:

We'll assume there is an excess of silver nitrate, so that all 12.0 moles of the magnesium (Mg) will react.

The balanced equation tells us we'll obtain 2 moles of Ag for every 1 mole of magnesium, for a molar ratio of 2/1.

Starting with 12.00 moles Mg, we would therefore hope to find twice that, or 24.00 moles of Ag.

To convert to grams, find the molar mass of Ag from the periodic table.

Ag has a molar mass of 107.9 (to 4 sig figs) grams/mole.

(24.00 moles)*(107.9 grams/mole) = 2590 grams (4 sig figs)

Hands off, it's mine.

5 0
2 years ago
Type the correct answer in each box.
BARSIC [14]

Answer:

mg3n2 and cacl3 hope it helps

4 0
3 years ago
When the subscript is present it is implies to which element
Damm [24]

Answer: The element in front of the subscript is what it applies to!

Explanation:

4 0
3 years ago
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