HNO3 increases the concentration of ____ when added to water

Answers

Answer 1

Answer: Since HNO3 is a strong acid, it would dissociate completely forming ions of H+ and NO3-. The ionization or dissociation of HNO3 will increase the concentration and or amount of H+ within the water, resulting in the pH or measure of H+ to decrease, indicating that the solution is tending to become acidic.

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After burning for three hours, a candle has lost half of its mad. Explain why this example does not violate the law of conversation of mass.
The combustion of 1 mole of CO according to the reaction CO(g) + ½O2(g) → CO2(g) + 67.6 kcal gives off how much heat?-67.6 kcal -1,514 kcal -33.3 kcal -135.2 kcal -none of the above
How are mixtures compounds and elements alike?

A compound that contains both potassium and oxygen formed when potassium metal was burned in oxygen gas. the mass of the compound was 7.11 grams. The mass of the potassium metal was 3.91 grams. What mass of oxygen was involved in this reaction? Justify your answer.

Answers

Answer:
3.2 g of O₂

Solution:
This reaction is for the formation of Potassium Superoxide, The reaction is as follow,

K + O₂ → KO₂

First let us confirm that either the given amount of Potassium produces the given amount of Potassium oxide or not,
So,
As,
39.098 g (1 mole) K produced = 71.098 g of K₂O
So,
3.91 g of K will produce = X g of K₂O

Solving for X,
X = (3.91 g × 71.098 g) ÷ 39.098

X = 7.11 g of K₂O

Hence, it is confirmed that we have selected the right equation,
So,
As,
39.098 g of K required = 32 g of O₂
So,
3.91 g of K will require = X g of O₂

Solving for X,
X = (3.91 g × 32 g) ÷ 39.098 g

X = 3.2 g of O₂

The mass of oxygen that was involved in the reaction is calculated as below

mass of the oxygen =mass of the compound- mass of the potassium

that is 7.11 grams -3.91 grams= 3.2 grams of oxygen is involved

This is because the mass of the compound composes the mass of potassium + mass of the oxygen

given that the molar mass of H2O is 18.02g/mol, how many liters of propane are required at STP to produce 75 g of H2O from this reaction?

Answers

C₃H₈ + 5O₂ = 3 CO₂ + 4 H₂O

44.1 g ----------- 4* 18.02 g

? g --------------- 75 g

mass of C₃H₈ = 75 * 44.1 / 4 * 18.02

mass of C₃H₈ = 3307.5 / 72.08

= 45.886 g of propane

number of moles:

45.886 / 44.1 = 1.0404 moles

1 mole --------- 22.4 L ( at STP )
1.0404 moles ----- ?

v = 1.0404 * 22.4 / 1

v = 23.304 L

hope this helps!

What are atoms that have gained or lost electrons?A. ions
B. isotopes
C. elements
D. molecules

Answers

They are called... ions.
Ions have negative charges. They also contain more protons than electrons.
I hope this helps!

Answer:

IONS

Explanation:

H e l p,,, ill give brainliest :)

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Hi there! :)

Both are compounds.

$CO_(2)$ contains 1 carbon (C) atom and 2 oxygen (O) atoms.

It contains two different elements, so it is a COMPOUND.

$Na_(2) O$ is an IONIC compound with elements Sodium (Na) and Oxygen (O), which are different elements. Therefore, it is also a COMPOUND.

What does command mean

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Answer:

Explanation:

Answer:

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Which reading is expected from a thermometer near Earth’s surface during a period of freezing rain?

Answers

I assume this is a multiple choice question by the way it is worded, but out of all the choices I would assume it would be the temperature above freezing point, but not extremely high.

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Which is most likely why many scientists reject the cold fusion theory?