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zloy xaker [14]
3 years ago
5

Three blocks of the same mass are placed in front of you. Block A has a volume of

Chemistry
1 answer:
Ivan3 years ago
8 0

Given :

Three block of same mass name A , B and C .

Sides of block A , B and C is 3.0 cm , 5.0 cm and 10.0 cm .

To Find :

Which block has the higher  density .

Solution :

We know , density \rho is given by :

\rho=\dfrac{M}{V}   ......1 )

Here , V is volume .

Now , volume V for cube is given :

V=a^3    .......2 )

(  Here , a is the side of cube )

Now ,form equation 1 we can see if mass remains constant then density decrease with increase in volume.

Therefore , cube with minimum side will have higher density , in this case it is 3 cm block .

Hence , this is the required solution .

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its matter

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If 2.0 liters of oxygen gas react with excess carbon monoxide at 273 K and 1.00 atm, how many liters of carbon dioxide can be pr
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Which statement best summarizes what happens during cellular respiration?
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Answer:

A

Explanation:

B and D have to do with plants

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3 years ago
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PRACTICE
Stels [109]

Answer:

35.8 u

Explanation:

The atomic mass of Cl is the weighted average of the atomic masses of its isotopes.

We multiply the atomic mass of each isotope by a number representing its relative importance (i.e., its percent abundance).

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= 17.119 u + 18.162 u = 35.28 u

Atomic mass of Cl-37 = 17p + 20n = 17 × 1.007 u + 20 × 1.009 u

= 17.119 u + 20.180 u = 37.30 u

Set up a table for easy calculation.

0.755 × 35.28 u =  26.64  u

0.245 × 37.30 u =    9.138 u

             TOTAL = 35.8     u

Note: The actual atomic mass of Cl is 35.45 u.

The calculated value above is incorrect because

(a) the given isotopic percentages are incorrect and

(b) the protons and neutrons have less mass when they are in the nucleus than when they are free. Thus, the calculated masses of Cl-35 and Cl-37 are too high.

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4 years ago
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What are 3 methods you can use to separate a mixture? Give an example of each.
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The three methods we can use to separate a mixture are:

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example:cream from milk

3.evaporation

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