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gregori [183]
3 years ago
14

Nickel-63 has a half life of 92 hours. If a

Chemistry
1 answer:
arsen [322]3 years ago
5 0

Answer:

6.25 g of nickel -63 will be left

Explanation:

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Put atom in order from most to lest​
Andrej [43]

Answer:

francium, caesium, helium

7 0
3 years ago
A 15.0 ml sample of gas at 10.0 degree Celsius and 760 torr changes to a pressure of 1252 torr at 35.0 degree Celsius. What is t
netineya [11]

Answer:

9.91 mL

Explanation:

Using the combined gas law equation as follows;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (torr)

P2 = final pressure (torr)

V1 = initial volume (mL)

V2 = final volume (mL)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question;

V1 = 15.0mL

V2 = ?

P1 = 760 torr

P2 = 1252 torr

T1 = 10°C = 10 + 273 = 283K

T2 = 35°C = 35 + 273 = 308K

Using P1V1/T1 = P2V2/T2

760 × 15/283 = 1252 × V2/308

11400/283 = 1252V2/308

Cross multiply

11400 × 308 = 283 × 1252V2

3511200 = 354316V2

V2 = 3511200 ÷ 354316

V2 = 9.91 mL

4 0
3 years ago
If calcium has two valence electrons and fluorine has seven, how many fluorine atoms are needed to form an ionic bond with calci
MaRussiya [10]
Fluorine needs one electron to fill its orbital shell. It needs 8 valence electrons
5 0
3 years ago
Read 2 more answers
If the density of mercury is 13.6g/ml, how many ml of mercury are in 1,000 g of mercury?
Illusion [34]

Answer:

<h2>73.53 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question we have

volume =  \frac{1000}{13.6}  \\  = 73.52941...

We have the final answer as

<h3>73.53 mL</h3>

Hope this helps you

6 0
3 years ago
When solutions of barium chloride and lithium sulfate are mixed, the spectator ions in the resulting reaction are?
Pepsi [2]
Barium chloride and lithium sulfate are mixed, barium sulfate and lithium chloride are formed. Barium sulfate is obtained as a white precipitate and lithium chloride as an aqueous solution.

Hope it helped!
8 0
3 years ago
Read 2 more answers
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