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LiRa [457]
3 years ago
10

Help please .............​

Chemistry
1 answer:
lapo4ka [179]3 years ago
3 0

Answer:

And what is your question

Explanation:

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What is the volume of a sample of liquid mercury that has a mass of 53.8 g, given that the density of mercury is 13.6 g/mL? Answ
Liula [17]

The formula for density is:

density=\frac{mass}{volume}

We know the density for mercury is 13.6 g/mL, and we know the mass of the sample is 53.8 g. Thus, we can plug these numbers into our equation and solve for volume.

The volume is unknown, so we can simply denote it as "x"

13.6 g/mL=\frac{53.8 g}{x}

multiply both sides by x

(x)(13.6 g/mL)=\frac{53.8 g}{x}(x)

The x's cancel out on the right side and you are left with

(x)(13.6 g/mL)=53.8 g

From here, simply divide both sides of the equation by 13.6 g/mL and solve for x.

\frac{(x)13.6 g/mL}{13.6 g/mL}=\frac{53.8 g}{13.6 g/mL}

x=3.955882353 mL

Round to 3 significant figures, and your final answer is:

x=3.96 mL

The volume of the sample of mercury was 3.96 mL.


6 0
3 years ago
Pb(NO3)2 + K2CO3 --&gt; PbCO3 + KNO3<br> A. 5<br> B. 2<br> C.<br> 4
emmasim [6.3K]

Answer:

Pb(NO3)2 + K2CO3 ----> PbCO3 + 2KNO3

The answer is B. 2

Hope this helps!

4 0
3 years ago
Approximately 2.5 kg of carbon dioxide gas are produced for every liter of gasoline burned in an automobile gasoline engine. Cal
uranmaximum [27]
125 mile *1gallon/35 mi = 135/35 = (27/7) gallon gasoline 

27/7 gallon * 1 L/0.264 gallon = 14.6 L  gasoline

14.6 L gasoline * 2.5kg CO2/1L gasoline= 36.5 kg CO2

36.5 kg CO2 * 1lb/0.454 kg = 80.4 lb

Answer: 80.4 lb CO2

6 0
2 years ago
A compound is broken down into 34.5 g of element a, 18.2 g of element b, and 2.6 g of element
Katena32 [7]
First, find the total mass.

34.5 g + 18.2 g + 2.6 g = 55.3 g

Divide the mass of each element by total mass.

34.5 g / 55.3 g = .62 x 100 = 62% element a

18.2 g / 55.3 = .33 x 100 = 33% element b

2.6 g / 55.3 = .047 x 100 = 4.7% element c

Hope I helped!


8 0
2 years ago
How many moles are in 432 g of Ba(NO3)2?
Artist 52 [7]

Answer:

432/261.337=1.65 moles

Explanation:

4 0
2 years ago
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