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Scorpion4ik [409]
3 years ago
8

What is the percent error of a length measurement of .454cm if the correct value is 0.546cm?

Chemistry
1 answer:
mina [271]3 years ago
5 0
17% is the percent error

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What do you use to measure mass
Nesterboy [21]
To measure gravitational mass one of the methods includes using a spring balance. a balance is a type of scale that is different because it uses known mass to measure the unknown mass. so technically the method measures the weight.

also if you just want to know normal mass then just weigh the object on the scales because technically speaking when you want to see your weight you are actually seeing your mass. because mass never changes whilst weight is from the result of gravity and always changes, so yeah. I hope thos actually makes some sort of sense
7 0
3 years ago
Zinc sulfate is made by reacting an excess of zinc oxide with dilute sulfuric acid. The excess zinc oxide is then removed from t
shutvik [7]

Answer:

fractional distillation

Explanation:

i hope its help you

7 0
3 years ago
Please help me and promise I will mark as brainiest I need it in ISEF please
Crank

Answer: A typical hydrogen fuel cell produces 0.5 V to 0.8 V per cell. To increase the voltage individual cells can be connected in series.

7 0
3 years ago
Given 13.5 grams of substance Z, if the substance absorbs 36 kilojoules of energy and the temperature increases by 25 degrees Ce
kirza4 [7]

Answer:

1.07 ×10² j/g.°C

Explanation:

Given data:

Mass of substance Z = 13.5 g

Amount of heat absorbed = 36 Kj (36×1000 = 36000 j)

Increase in temperature= ΔT  = 25°C

Specific heat of substance = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Now we will put the values in formula.

Q = m.c. ΔT

36000 j = 13.5 g ×c×25°C

36000 j / 13.5 g×25°C = c

c = 36000 j /337.5 g.°C

c = 1.07 ×10² j/g.°C

3 0
3 years ago
how many protons electrons and neutrons does a atom with the atomic number 50 and mass number 125 contain?
Aleonysh [2.5K]

Answer:

Protons: 50, Neutrons: 75, Electrons: 50

Explanation:

The atomic number, which in this case is 50, determines the number of protons and electrons an atom has. Take the atomic number and subtract the number of protons to get the number of neutrons.

4 0
3 years ago
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