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3 years ago

Question number 10 & 11, answer please and thank you

Chemistry

1 answer:

nika2105 [10]3 years ago

3 0

Answer:

molarity = moles of solution/liters of solution

molarity = 1 mole/2 liters

molarity = 0.5 M

molarity = 50 moles/200 kg

molarity = 0.25 M

Explanation:

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goblinko [34]

Answer:

8.3028894e-22

Explanation:

5x10^2 atoms/1 x 1 mol/6.022x10^23

7 0

3 years ago

24.08 x 10^23 atoms of Boron (B) is equal to how many moles of Boron?

padilas [110]

1 mole ----------- 6.02 x 10²³ atoms
? mole ---------- 24.08 x 10²³ atoms

moles B = ( 24.08 x 10²³) x 1 / 6.02 x 10²³

moles B = 24.08 x 10²³ / 6.02 x 10²³

= 4 moles

Answer B

hope this helps!

5 0

3 years ago

Read 2 more answers

Write the complete balanced equation for the decomposition of AI(CIO3)3.

OlgaM077 [116]

Answer:

2AL(ClO3)3 → 2ALCl3 + 9O2

Explanation:

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2 years ago

A 25.0g tin sample was placed in boiling water at 99.5 C until it had the same temperature. Afterwards, the tin sample was place

MrMuchimi

Answer : The specific heat of tin is, 0.213 J/g.K

Explanation :

Formula used :

$q=m\times c\times (T_{final}-T_{initial})$

where,

q = amount of heat lost = -399.4 J

c = specific heat capacity of tin = ?

m = mass of tin = 25.0 g

$T_{final}$ = final temperature = $24.5^oC=273+24.5=297.5K$

$T_{initial}$ = initial temperature = $99.5^oC=273+99.5=372.5K$

Now put all the given values in the above formula, we get:

$-399.4J=25.0g\times c\times (297.5-372.5)K$

$c=0.213J/g.K$

Therefore, the specific heat of tin is, 0.213 J/g.K

7 0

3 years ago

How many elements compose the majority of rock-forming minerals?

PSYCHO15rus [73]

10 elements compose the bulk of rock forming minerals

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3 years ago