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3 years ago

How many oxygen atoms are in 2(NO3)

Chemistry

1 answer:

torisob [31]3 years ago

5 0

6 Oxygen atoms

Explanation:

In the molecule 2(NO₃):

An atom is the smallest indivisible particle of any substance. They chemically combine to give compounds and molecules. Some of them are able to exist on their own.

An element is a substance that has a unique atom.

NO₃ has two elements: N and O

Number of atoms:

N = 1

O = 3

but we have two moles of NO₃

O = 3 x 2 = 6

N = 1 x 2 = 2

learn more:

Number of atoms brainly.com/question/10419836

#learnwithBrainly

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5. A hollow glass sphere has a volume of 350 mL and

Rina8888 [55]

Explanation:

Given that,

Volume of a hallow glass sphere is 350 mL

Specific gravity is 1.252

We need to find the weight of the sphere. The ratio of density of substance to the density of water is called specific gravity.

The density of water is 1 g/mL

$\text{specific gravity}=\dfrac{\text{density of substance}}{\text{density of water}}\\\\SG=\dfrac{m}{V\times \rho_w}\\\\m=SG\times V\times \rho_w\\\\m=1.252\times 350\ mL\times 1\ g/mL\\\\m=438.2\ \text{grams}$

We know that,

1 pound = 453.592 grams

So,

m = 0.97 lbs

So, the weight of the sphere is 0.97 lbs or 0.97 pounds.

5 0

3 years ago

Why boiling point is more when vanderwall force if more?

jek_recluse [69]

Answer:

It is the intermolecular forces acting between the molecules that cause attractions between them making them liquids or solids. The strength of Van der Waals forces depends primarily on the number of electrons in total in the molecule, so larger molecules will have higher boiling points.

Explanation:

6 0

3 years ago

Jodi reacts 6.087 grams of cobalt (mw=58.933) with a solution containing excess gold (iii) chloride and recovers 13.572 g of sol

Makovka662 [10]

The correct answer is reaction 2 most likely occurred in their experiment.

So the given two reactions are as follows:

1) Au³⁺(aq) + Co(s) --> Au(s) + Co³⁺(aq)

2) 2Au³⁺(aq) + 3Co(s) --> 2Au(s) + 3Co³⁺(aq)

Mass of Co = 6.087 g

Molar mass of Co = 58.933 g/mol

Moles of Co = $\frac{6.087 g}{58.933 g/mol}$ = 0.1032

Mass of Au = 13.572 g

Molar mass of Au = 196.967 g/mol

Moles of Au = $\frac{13.572 g}{196.967 g/mol}$ = 0.069

Now based on reaction 1) the molar ratio between Co and Au is 1:1

So as per this reaction 0.1032 moles of Co would produce 0.1032 mole of Au

Again based on reaction 2) the molar ratio between Co and Au is 3:2

So as per this reaction 0.1032 moles of Co would produce $\frac{2 x 0.1032}{3}$ mole of Au

or, As per the second reaction 0.1032 moles of Co would produce 0.0688 moles of Au

8 0

4 years ago

Which shows a monosaccharide?

hammer [34]

Answer:

Explanation:

3 0

3 years ago

Read 2 more answers

How do you write a balanced chemical equation for the reaction in which dinitrogen pentoxide gas reacts with water to produce ni

Dominik [7]

Answer: a) $N_2O_5(g)+H_2O(g)\rightarrow 2HNO_3(g)$

b) 3.8608 moles

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced reaction for dinitrogen pentoxide gas with water to produce nitric acid is:

$N_2O_5(g)+H_2O(g)\rightarrow 2HNO_3(g)$

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

$\text{Number of moles of dinitrogen pentoxide}=\frac{208.48g}{108g/mol}=1.9304moles$

According to stoichiometry:-

As nitric acid is the limiting reagent as it limits the formation of product.

1 mole of $N_2O_5$ gives = 2 moles of $HNO_3$

Thus 1.9304 moles of $N_2O_5$ give = $\frac{2}{1}\times 1.9304=3.8608$ moles of $HNO_3$

Thus 3.8608 moles of $HNO_3$ can be produced.

5 0

3 years ago