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lina2011 [118]
3 years ago
5

PLEASE HELP THIS IS SCIENCE

Chemistry
1 answer:
solmaris [256]3 years ago
4 0

Answer:

where is the answer??

Please do not just take the points without answering the question.

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Calculate the molarity of 153.3g of H2SO4 in 1.290L of solution
Ksenya-84 [330]
Molar mass H₂SO₄ = 98.0 g/mol

Volume = 1.290 L 

number of moles:

153.3 / 98 => 1.564 moles

M = n / V

M = 1.564 / 1.290

M = 1.212 mol/L

hope this helps!
3 0
4 years ago
2 A 3-meter-long ramp was used to lift gold into railroads for transfers. The railroads were 1 meter off the ground. What was th
Nataliya [291]

Answer:

3

Explanation:

For an ideal ramp, M.A/V.R = 1 where M.A = mechanical advantage and V.R = velocity ratio.

Now, V.R = distance moved by effort, d'/distance moved by load, d = d'/d

Now, d' = 3 m and d = 1 m.

So, V.R = d'/d = 3 m/1 m = 3

From M.A/V.R = 1

M.A = V.R = 3

So, the ideal mechanical advantage of the ramp M.A = 3  

6 0
3 years ago
Write the chemical symbol for an element in Period 6 and Group 2A
Nataly_w [17]
The answer is Ba (56)
3 0
4 years ago
State one source of lead compounds in the air?
Soloha48 [4]

Answer:Sources of lead emissions vary from one area to another. At the national level, major sources of lead in the air are ore and metals processing and piston-engine aircraft operating on leaded aviation fuel. Other sources are waste incinerators, utilities, and lead-acid battery manufacturers. The highest air concentrations of lead are usually found near lead smelters.

Explanation:

7 0
3 years ago
If the mass of a block of wood is 4.6g and the density is 0.98g/mL what is the volume.
irina [24]

Answer:

The answer is

<h2>4.69 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}  \\

From the question

mass of wood = 4.6 g

density = 0.98 g/mL

It's volume is

volume =  \frac{4.6}{0.98}  \\  = 4.69387755...

We have the final answer as

<h3>4.69 mL</h3>

Hope this helps you

3 0
4 years ago
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