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Vilka [71]
3 years ago
12

What is the present Ba in Ba(NO3)2?​

Chemistry
1 answer:
Ira Lisetskai [31]3 years ago
3 0

Answer:

Percentage of Ba = 52.5%

Explanation:

We'll begin by calculating the molar mass of Ba(NO3)₂. This can be obtained as follow:

Molar mass of Ba(NO3)₂ = 137 + 2[14 +(16×3)]

= 137 + 2[14 + 48]

= 137 + 2[62]

= 137 + 124

= 261 g/mol

Next, we shall determine the mass of Ba in Ba(NO3)₂. This can be obtained as follow:

Mass of Ba in Ba(NO3)₂ = 137 g/mol

Finally, we shall determine the percentage of Ba in Ba(NO3)₂. This can be obtained as follow:

Percentage of Ba = mass of Ba / mass of Ba(NO3)₂ × 100

Percentage of Ba = 137 / 261 × 100

Percentage of Ba = 13700 / 261

Percentage of Ba = 52.5%

Thus, the percentage of Ba in Ba(NO3)₂ is 52.5%

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Convert 645 Newtons per quart to tons per liter. (The picture is a conversion table for help)
brilliants [131]

Answer:

0.067 ton/Litre.

Explanation:

645 Newtons per quart to tons per liter.

We'll begin by converting 645 Newton/quart to gram/quart (g/q). This can be obtained as:

1 N/q = 100 g/q

Therefore,

645 N/q = 645 N/q × 100 g/q / 1 N/q

645 N/q = 64500 g/q

Therefore, 645 Newton/quart is equivalent to 64500 grams per quart.

Next, we shall convert 64500 grams per quart to pounds per quart. This can be obtained as follow:

454 g/q = 1 pound/q

Therefore,

64500 g/q = 64500 g/q × 1 p/q / 454 g/p

64500 gram/quart = 142.07 pound/quart

Therefore, 64500 gram/quart is equivalent to 142.07 pound/quart.

Next, we shall convert 142.07 pound/quart to ton/quart. This can be obtained as follow:

2000 p/q = 1 ton/q

Therefore,

142.07 p/q = 142.07 pq × 1 ton/q / 2000 p/q

142.07 pound/quart = 0.071 ton/quart

Therefore, 142.07 pound/quart is equivalent to 0.071 ton/quart.

Finally, we shall convert 0.071 ton/quart to ton/litre. This can be obtained as follow:

1 ton/q = 1/1.06 ton/L

Therefore,

0.071 ton/q = 0.071 ton/q × 1/1.06 ton/L / 1 ton/q

0.071 ton/quart = 0.067 ton/Litre

Therefore, 0.071 ton/quart is 0.067 ton/Litre.

From the above illustration, 645 Newton/quart is equivalent to 0.067 ton/Litre.

7 0
4 years ago
HELP!!!
Volgvan
<h3><u>Answer;</u></h3>

pH = 6.34

<h3><u>Explanation;</u></h3>

pH is given as -log{H+]

But;

pH + pOH = 14

However;

pOH = -log [OH-]

[OH-] =  2.20 × 10−8 M

Thus;

pOH = -log (2.20 × 10−8 M)

        = 7.66

But;

pH = 14 - pOH

     = 14 - 7.66

     <u>= 6.34 </u>

3 0
3 years ago
Read 2 more answers
After 42 days a 2.0 g sample of phosphorus-32 contains only 0.25 g of the isotope. What is the half-life of phosphorus-32?
bija089 [108]
2.0 g 1.0g 0.5g 0.25g
3 and a half lives = 42 days
7 0
3 years ago
What happens when a star is eaten by a black hole
Stells [14]
The Star gets stretched and torn apart by the gravitational pull of the black whole, stellar material gets compressed as it is pulled in, this is called, stellar tidal disruption
7 0
3 years ago
what would the total pressure of a mixture of fluorine, chlorine, and bromine gases be if the partial pressure are 2.20 atm, 6.7
astraxan [27]

Answer:

The total pressure would be 8, 93 atm

Explanation:

We apply Dalton's laws, where for a gaseous mixture, the total pressure (Pt) is the sum of the partial pressures (Px) of the gases that make up the mixture.

Pt= Pxa + Pxb+ Pxc....

Pt=2, 20 atm+ 6, 70 atm+ 0,03 atm= 8, 93 atm

4 0
4 years ago
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