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Viefleur [7K]
3 years ago
14

Draw a ionic Lewis dot structure for Ba + F (Will give Brainliest for the best answer)

Chemistry
1 answer:
andreyandreev [35.5K]3 years ago
3 0
Ionic Lewis Dot Structure for BaF2, hope this helps.

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Ammonium phosphate NH43PO4 is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid H3PO4 with
VladimirAG [237]

Answer:

7.3 g (NH₄)₃PO₄

Explanation:

The balanced equation for the reaction is:

H₃PO₄ +  3 NH₃ ----> (NH₄)₃PO₄

To find the mass of ammonium phosphate ((NH₄)₃PO₄) produced, you need to (1) convert grams NH₃ to moles NH₃ (via the molar mass from the periodic table), then (2) convert moles NH₃ to moles (NH₄)₃PO₄ (via mole-to-mole ratio from balanced equation), and then (3) convert moles (NH₄)₃PO₄ to grams (NH₄)₃PO₄ (via molar mass from periodic table). Make sure to arrange the ratios/conversions in a way that allows for the cancellation of units. The final answer should have 2 sig figs because the given value (2.5 grams) has 2 sig figs.

Molar Mass (NH₃): 14.01 g/mol + 3(1.008 g/mol)

Molar Mass (NH₃): 17.034 g/mol

Molar Mass ((NH₄)₃PO₄):

3(14.01 g/mol) + 12(1.008 g/mol) + 30.97 g/mol + 4(16.00 g/mol)

Molar Mass ((NH₄)₃PO₄): 149.096 g/mol

2.5 g NH₃          1 mole NH₃        1 mole (NH₄)₃PO₄             149.096 g
---------------  x  --------------------  x  ---------------------------  x  --------------------------
                            17.034 g             3 moles NH₃              1 mole (NH₄)₃PO₄

=  7.3 g (NH₄)₃PO₄

8 0
2 years ago
Iron-59 has a half-life of 44 days. a radioactive sample has an activity of 0.64 mbq. what is the activity of the sample after 8
myrzilka [38]
Radioactive decay is a pseudo-first order reaction. When you know the half-life of the material, you could use this equation.

A= A₀(1/2)^t/h
where 
A is the final activity
A₀ is the initial activity
t is the time
h is the half-life

A = (0.64)(1/2)^88/44 = <em>0.16 mbq</em>
6 0
3 years ago
How can you tell when a solid substance dissolves in water and does not
Hatshy [7]

Explanation:

when the water evaporates the substance is left behind

7 0
2 years ago
What are the common compounds of argon
ludmilkaskok [199]

There are no common compounds for argon because its oxidation number is zero which means it wont form compounds easily.

8 0
3 years ago
The English unit, the rod, is equal to 16.5 ft. What is the length expressed in meters?
MrRissso [65]

Answer:

1 rod, equal to 16.5 ft, is equal to exactly 5.0292 meters.

Explanation:

8 0
3 years ago
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