Beth made the chart shown. Which headings best complete the chart?

Chemistry

1 answer:

lara31 [8.8K]3 years ago

4 0

Answer:

(A) x: use DC y: use DC

Explanation:

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Answer:

I think a light bulb

Explanation:

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3 years ago

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A sample of a compound contains 60.0 g C and 5.05 g H. It’s molar mass is 78.12 g/mol. What is the compound’s molecular formula?

Natalka [10]

Answer:

C6H6

Explanation:

C : 60.0 g*1 mol/12 .01g = 5.00 mol

H: 5.05 g * 1 mol/1.01 g= 5.10 mol

C:H = 5.00 mol : 5.10 mol = 1:1

CH is an empirical formula

Molar mass (12.01 +1.01)=13.02 g/mol

78.12g/mol /13.02 g/mol =6

Molecular formula is the empirical that was taken 6 times (CH)6 = C6H6

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How can we freeze water in the classroom

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4 years ago

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Give the chemical symbol of an element in the third period (row) of the periodic table with four 3p electrons.

Ann [662]

<u>Answer: </u>The chemical symbol of the element is Sulfur.

<u>Explanation:</u>

The element which is present in third period of the periodic table having four 3p electrons is Sulfur. Sulfur is the 16th element of the periodic table which has 6 valance electrons.

The electronic configuration of this element is: $[Ne]3s^23p^4$