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Sedbober [7]
3 years ago
6

What the answer question

Chemistry
1 answer:
Serga [27]3 years ago
4 0

Answer:

it's a trigonal bipyramidial

Explanation:

because NH3 have 3 hydrogen atoms

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Gastric juice in the stomach contains pepsin and sulfuric acid.<br><br><br> TrueFalse
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False, pepsin and hydrochloric acid
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Which best describes the soils found in the southeastern United States?
Genrish500 [490]

Answer: Weathered

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What are the hypotheses on which Dalton's atomic theory is based?
worty [1.4K]

Answer:

 Dalton's theory are based on the two laws  that are: Law of conservation of mass and law of constant composition. This theory basically described their properties of atoms.

This theory state that all the atoms are made up of matter which are invisible and in the elements all the atoms are identical in mass and properties.

3 0
3 years ago
The reaction of NH3 and O2 forms NO and water. The NO can be used to convert P4 to P4O6, forming N2 in the process. The P4O6 can
posledela

Answer : The mass of PH_3 produced from the reaction is, 0.651 grams.

Explanation :

The chemical reactions used are:

(1) 4NH_3+5O_2\rightarrow 4NO+6H_2O

(2) 6NO+P_4\rightarrow P_4O_6+3N_2

(3) P_4O_6+6H_2O\rightarrow 4H_3PO_4

(4) 4H_3PO_4\rightarrow PH_3+3H_3PO_4

First we have to calculate the moles of NH_3

\text{Moles of }NH_3=\frac{\text{Mass of }NH_3}{\text{Molar mass of }NH_3}

Molar mass of NH_3 = 17 g/mol

\text{Moles of }NH_3=\frac{1.95g}{17g/mol}=0.115mol

Now we have to calculate the moles of NO

From the balanced chemical reaction 1, we conclude that:

As, 4 moles of NH_3 react to give 4 moles of NO

So, 0.115 moles of NH_3 react to give 0.115 moles of NO

Now we have to calculate the moles of P_4O_6

From the balanced chemical reaction 2, we conclude that:

As, 6 moles of NO react to give 1 moles of P_4O_6

So, 0.115 moles of NO react to give \frac{0.115}{6}=0.0192 moles of P_4O_6

Now we have to calculate the moles of H_3PO_4

From the balanced chemical reaction 3, we conclude that:

As, 1 moles of P_4O_6 react to give 4 moles of H_3PO_4

So, 0.0192 moles of P_4O_6 react to give 0.0192\times 4=0.0768 moles of H_3PO_4

Now we have to calculate the moles of PH_3

From the balanced chemical reaction 4, we conclude that:

As, 4 moles of H_3PO_4 react to give 1 moles of PH_3

So, 0.0768 moles of H_3PO_4 react to give \frac{0.0768}{4}=0.0192 moles of PH_3

Now we have to calculate the mass of PH_3

\text{ Mass of }PH_3=\text{ Moles of }PH_3\times \text{ Molar mass of }PH_3

Molar mass of PH_3 = 33.9 g/mole

\text{ Mass of }PH_3=(0.0192moles)\times (33.9g/mole)=0.651g

Therefore, the mass of PH_3 produced from the reaction is, 0.651 grams.

6 0
3 years ago
PLEASE HELP ASAP!!! I REALLY NEED HELP ON THIS TEST!!!
Oksana_A [137]

Answer:

1. Hyphothesis 2.Theory 3. law

Explanation:

not sure, but law is observation, theory is based on knowledge things before.

5 0
3 years ago
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