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Elanso [62]
2 years ago
6

HELP ME, MARKED AS BRAINEST

Chemistry
1 answer:
ELEN [110]2 years ago
5 0

Answer:

The answer is B

Explanation:

2Na + 2H2O = 2NaOH + H2

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NEED HELP FAST !! Does anyone know what element this is ??
bonufazy [111]

Answer:

Carbon

Carbon atoms have 6 protons.

5 0
3 years ago
Na + H2 → NaCl balanced equation
hodyreva [135]

Answer:

..............

........

.............

6 0
2 years ago
Read 2 more answers
What is the volume of 1.50 lb (pounds) of mercury? The density of mercury is 13.546 g/mL. Use the conversion that 1 kg = 2.20 lb
Arada [10]

Answer:

50.3mL of mercury are in 1.50lb

Explanation:

Punds are an unit of mass. To convert mass to volume we must use density (13.546g/mL). Now, As you can see, density is in grams but the mass of mercury is in pounds. That means we need first, to convert pounds to grams to use density and obtain volume of mercury.

<em>Mass mercury in grams:</em>

1.50lb * (1kg / 2.20lb) = 0.682kg = 682g of mercury.

<em>Volume of mercury:</em>

682g Mercury * (1mL / 13.546g) =

<h3>50.3mL of mercury are in 1.50lb</h3>
7 0
3 years ago
Which type of rock might be useful as a source of petroleum?
storchak [24]

Answer:

petroleum rocks

Explanation:

6 0
3 years ago
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What is the weighted average of a nail in the sample data given?
Natalka [10]

The weighted average of the nail in accordance with the given data is 11.176g.

<h3>How to calculate weighted average?</h3>

Weighted average is an arithmetic mean of values biased according to agreed weightings.

The weighted average of the nail in the image above can be calculated by multiplying the decimal abundance with the mass of the nail, then summed up as follows;

Weighted average = (decimal abundance × mass 1) + (decimal abundance × mass 2)

Weighted average = (0.12 × 3.3) + (0.88 × 12.25)

Weighted average = 0.396 + 10.78

Weighted average = 11.176g

Therefore, 11.176g is the weighted average of the nail

Learn more about weighted average at: brainly.com/question/28042295

#SPJ1

5 0
1 year ago
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