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krok68 [10]
3 years ago
12

The radius of a hydrogen atom is 37pm and its mass is 1.67*10^-24g.

Chemistry
2 answers:
Anna35 [415]3 years ago
8 0

Answer:

7.890

Explanation:

Because the mass of the atom + the atomic number

kirill115 [55]3 years ago
6 0

Answer:

V = 4/3 * 3.1416 * (37x10-10)3

V = 2.12x10-25 cm3

d = m/V

d = 1.67x10-24 / 2.12x10-25 = 7.87 g/cm3

The difference in temperature, let's convert F to ºC:

ºC = -80-32/1.8 = -62.22 ºC

dT = -92.6 + 62.2 = -30.4 ºC

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Solnce55 [7]

Answer:

Explanation:

3BaCl₂(aq)        +    2Na₃PO₄(aq)   =   Ba₃(PO₄)₂    +    6NaCl(aq)

3 x 208 g = 624 g    2 x 164 g = 328 g  

 328 g  of Na₃PO₄ reacts with 624 g of BaCl₂

.611 g  of Na₃PO₄ reacts with 624 x .611/328 g of BaCl₂

624 x .611/328 g = 1.16 g of BaCl₂

BaCl₂ available is .504 g which is less than required .

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7 0
3 years ago
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ss7ja [257]
I believe it is D.

Since something with a high temperature has a higher kinetic energy, it would make sense for the energy of the molecules in the ground to increase. This is because the increasing temperature of the ground allows for the molecules to become faster in motion.
6 0
3 years ago
H-H + CI-CI → H-CI+H-CI
Jet001 [13]

Answer:

if this is balanced or unbalanced equations then this one is balanced since there is 2 H on each side and 2 Cl's on each side  

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8 0
3 years ago
A gaseous mixture of 1.0 mol of 12 and 1.0 mol of H2 was placed in an empty vessel that has a
dezoksy [38]

Answer:

See detailed explanation.

Explanation:

Hello!

In this case, for the reaction:

I_2+H_2\rightleftharpoons 2HI

It is known that the equilibrium constant tends to be greater than 1; therefore, it is a reaction that tends to go rightwards towards the formation of hydrogen iodide.

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6 0
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What is the significant figures of 3.682417e-5
Vadim26 [7]

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7 SigFigs

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