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Galina-37 [17]
3 years ago
14

Write the empirical formula for at least four ionic compounds that could be formed from the following ions: NO3, Pb^4+, NH4, SO4

Chemistry
1 answer:
Alisiya [41]3 years ago
5 0

Explanation:

here's the answer to your question

double arrow just mean that it's a reversible process, and the reaction can go back and forth.

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podryga [215]
B is the correct answer for it
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Sally fell off of her bike and scraped her knee. What cellular process would aid in the healing of her scrape? Group of answer c
kotegsom [21]

Answer:

Mitosis

Explanation:

you scrape your knee and the skin repairs itself

5 0
2 years ago
What law is known as the law of action-<br> reaction?
Molodets [167]

Law of Action and Reaction mean "To every action there is equal and opposite reaction.

Explanation:

It is Newtons third law which explained few  things such as :-

1. The nature of the forces between the two interacting objects.

2. According to this law , the force that is exerted from Object-1 to Object-2 is said to be equal in magnitude and opposite to the direction to the force exerted to object 2 upon object 1.

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6 0
3 years ago
What unit is used for atomic mass
kicyunya [14]

Answer:

universal mass unit

<h2 />

The universal mass unit, abbreviated u (sometimes amu for atomic mass unit), is defined as one-twelfth of the mass of the 12C atom which has been defined to be exactly 12 u. The absolute mass of a 12C atom is obtained by dividing the value 12 by the Avogadro number (NA = 6.022 137 × 1023).

7 0
3 years ago
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A gas at constant volume has a pressure of 2. 80 atm at 400. K. What will be the pressure of the gas at 360. K? 2. 52 atm 2. 94
katovenus [111]

Answer:

2.52atm for sure

Explanation:

We know that:

P1= 2.80atm

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T2= 360k

And we want to find P2= ?

We have an equation: P1/T1 = P2/T2

Multiple both side by T2 to remove it

P2 = 2.52

6 0
2 years ago
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