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Rainbow [258]
3 years ago
11

Why are significant figures NOT important when solving problems in your math class?

Chemistry
1 answer:
Alex Ar [27]3 years ago
4 0
They're not important when solving math problems in class because you need to get the correct and accurate answers hence don't need to change them into significant figures
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The net force on a vehicle that is accelerating at a rate of 1.2 m/s² is 1500 newtons. What is the mass
kotegsom [21]

Answer:

1250kg

Explanation:

Given parameters:

Acceleration  = 1.2m/s²

Force  = 1500N

Unknown:

Mass on the vehicle  = ?

Solution:

According to newton's second law of motion:

  Force  = mass x acceleration

Since mass is the unknown, insert the parameters and solve;

       1500  = mass x 1.2

        mass = \frac{1500}{1.2}   = 1250kg

5 0
3 years ago
how can the development of energy storage systems help solve the environmental problems caused by acid precipitation
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The burning of fossil fuels to supply the electricity we use is a source of sulfur dioxide and nitrogen oxides. Another source is the burning of fuels to power cars, ...
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3 years ago
How many grams of lead (ll) sulfate would be produced from the complete reaction of 23.6 g lead (iV) oxide ?
djverab [1.8K]

Answer:

29.92grams of PbSO4

Explanation:

lead (iV) oxide = PbO2 = Molar mass: 239.2 g/mol

lead (ll) sulfate = PbSO4 = Molar mass: 303.26 g/mol

PbO2 = PbSO4

1:1 ratio

Pb = Lead

Lead has an oxidation number of 4+

O = Oxygen

Oxygen has an oxidation number of 2-

PbO2 + 4H+ + SO4 2- + 2e- = PbSO4(s) + 2H2O

Ok so the above would be the likely complete reaction, though we don't really need this as we already know the ratio is 1:1.

23.6g of PbO2

23.6/239.2 = 0.09866 Moles of PbO2

Since we have a 1:1 ratio we know that the same number of moles of PbSO4 are produced and since we know the molar mass it's simply molar mass multiplied by number of moles.

303.26 x 0.09866 = 29.92grams of PbSO4

6 0
3 years ago
How do producers make their own food
creativ13 [48]
Photosynthesis is how producers make their own food
8 0
3 years ago
Read 2 more answers
Whats the mass of a 1.25L sample of liquid that has a density of 0.921g/mL?
Zarrin [17]
Hey there!

Volume in mL :

1.25 * 1000 => 1250 mL 

Density = 0.921 g/mL

Therefore:

Mass = density * volume

Mass = 0.921 * 1250

Mass = 1151.25 g 
8 0
3 years ago
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