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dusya [7]
3 years ago
8

Decide whether you agree or disagree with the statement, "New theories in science are

Chemistry
1 answer:
Brrunno [24]3 years ago
3 0

Answer:

Time is relative - and science is still arguing about singlet versus doublet Carbenes; they fought over whether Oxygen was “real”, and refused to believe in Radium until one by one they SAW that drop glow! (And affect photographic film).

Explatnation:

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A metallurgist is making an alloy that consists of 325 grams of chromium (Cr) and 2.5 kg of iron (Fe). Find the total mass of th
Darya [45]

Answer:- Mass of the alloy is 2.8 kg.

Solution:- Mass of Cr in the alloy is 325 g and mass of Fe in the alloy is 2.5 kg. Mass of alloy would be the sum of masses of constituent metals.

Masses of the metals are not in the same units. So, we need to make the units equal. The want answer in kg so let's convert mass of Cr from g to kg.

Since, 1000 g = 1 kg

So, 325g\frac{1kg}{1000g}

= 0.325 kg

Mass of alloy = mass of Cr + mass of Fe

mass of alloy = 0.325 kg + 2.5 kg = 2.825 kg

If we consider significant figures then as per the rules, the answer should not have more than one decimal place.

So, 2.825 kg is round off to 2.8 kg and hence the mass of the alloy is 2.8 kg.

5 0
3 years ago
Which of the following occupies a volume?<br><br> solids<br> liquids<br> gases<br> all of the above
nataly862011 [7]
Solids occupy a volume
7 0
3 years ago
Read 2 more answers
ASAP PLZ HELP CHEMISTRY!!! CALCULATE THE MEAN AND THE UNCERTAINTY FOR EACH EXPERIMENT!!!
STALIN [3.7K]

Answer:

MEANS:

1 = 97.7

2 = 74.3

3 = 50

4 = 30

5 = 13

UNCERTAINTY:

gimme a sec, ill put it in the comments under this

3 0
4 years ago
What is avogrados number and why is it useful
gtnhenbr [62]

Answer:

Avogadro's number is 6.022×1023 molecules. With Avogadro's number, scientists can discuss and compare very large numbers, which is useful because substances in everyday quantities contain very large numbers of atoms and molecules.

please mark Brainliest if it helps!

7 0
2 years ago
A quantity of an ideal gas is compressed to half its initial volume. the process may be adiabatic, isothermal or isobaric. the g
JulsSmile [24]

the greatest amount of work is required if the process is adiabatic.The correct option is adiabatic.

The process in  which heat is constant is called adiabatic process.

The The process in  which temperature is constant is called isothermal process.

The process in  which pressure is constant is called isobaric process.

The P-V diagram for adiabatic , isothermal and isobaric process is given below.

Work done in process = area encloses by P-V diagram axis . Since area under the curve is maximum for adiabatic process which is shown in the above diagram. So, work done by the gas will be maximum for adiabatic process.

learn more about adiabatic process.

brainly.com/question/17192213

#SPJ4

3 0
1 year ago
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