Which compound contains ionic bonds?
1) N2O
2) Na2O
3) CO
4) CO2

Answer:

A is oxidation . B is reduction

Explanation:

A will be oxidation agent because there is gain of

electrons

B will be reducing agent because there is loss of

electrons.

Answer:

basic laboratory research, perform process and product development

Explanation:

good luck <3

The molar mass of the acid is 83 g/mol

From the question, we are to determine the Molar mass of the acid.

From the given information,

The acid reacts with sodium hydroxide in a 1:2 ratio

This means 1 mole of the acid reacts with 2 moles of sodium hydroxide

First, we will calculate the number of moles of NaOH present.

Volume of NaOH = 10.0 mL = 0.01 L

Concentration of NaOH = 0.800 M

Using the formula,

Number of moles = Concentration × Volume

Number of moles of NaOH present = 0.800 × 0.01

Number of moles of NaOH present = 0.008 moles

If, 1 mole of the acid reacts with 2 moles of sodium hydroxide

Then,

0.004 moles of the acid will react with the 0.008 moles of sodium hydroxide

Thus, number of moles of the acid that reacted is 0.004 moles

Now for the Molar mass of the acid

From the formula,

[tex]Molar\ mass = \frac{Mass}{Numbber\ of\ moles}[/tex]

From the given information,

Mass of the acid = 0.664 g

Therefore,

[tex]Molar \ mass \ of \ the \ acid \ = \frac{0.664}{0.004}[/tex]

Molar mass of the acid = 166 g/mol

Hence, the molar mass of the acid is 166 g/mol

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Answer:

The question is incomplete.

[tex]{ \tt{\% \: composition = \frac{molar \: mass}{molecular \: mass} \times 100\%}} \\ [/tex]

Answer:

Flowers play a crucial role in our lives; they have been used for generations to express the thoughts and feelings words cannot fully explain. Mother nature is the short term used to describe how nature gives life and nurture as a mother does for her children. As humans, we are part of mother nature's plan. We are also connected to plants and flowers, and some of the benefits have been passed to the next generation and will always be. We can control the air that we breathe, the aura around us, how we feel, and the things we attract in life. Other than only gifting your loved ones with flowers on special occasions, you can make the best and lasting impressions on your loved ones with a flower plant gift. This gesture shows that you understand how flowers are important in our life. To shed light on the importance of flowers in our life, here is a blog that will give five importance of flowers

Answer:

good afternoon

Explanation:

thanks I will send

Answer:

Explanation:

d i think but im not sure

Answer:

used in irrigation to transfer water over a barrier

The statement that best describes these observations is : ( C )

The mixture of a sample of C₂H₅OH and water is a solvation process ( interaction between solute and solvent ) which is a physical change and the level of solvation depends on the solvent ( water ) polarity.

The container been warm after the mixture sows that some heat is expensed into the surrounding ( exothermic reaction ). therefore we can conclude that a physical change has occurred and the solvation process is exothermic.

Hence we can conclude that the statement that best  describes these observations is : A physical change occurs and the solvation process is exothermic.

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Answer:

Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We do as follows:

10 mol NH3 ( 6.022 x 10^23 molecules / 1 mol ) = 6.022x10^24 molecules NH3

The number of formula units in the 17.6 g copper (II) chloride sample is [tex]7.88\;\times\;10^2^2[/tex]option A is correct.

The formula unit is given as the molecule of the compound with constituent atoms and bonds.

The number of formula units in a mole of sample is equal to the Avogadro number. The Avogadro number is a constant with the value of [tex]6.023\;\times\;10^2^3[/tex].

Thus, the number of formula units in copper (II) chloride are:

[tex]\rm 1\;mol=6.023\;\times\;10^2^3\;formula\;unit\\134.45\;g/mol=6.023\;\times\;10^2^3\;formula\;unit[/tex]

The given mass of copper chloride is 17.6 g. The number of formula units is given as:

[tex]\rm 134.45\;g=6.023\;\times\;10^2^3\;units\\\\17.6\;g=\dfrac{6.023\;\times\;10^2^3}{134.45}\;\times\;17.6\;units\\\\ 17.6\;g=7.88\;\times\;10^2^2\;units[/tex]

The number of formula units in the 17.6 g copper (II) chloride sample is [tex]7.88\;\times\;10^2^2[/tex] units.

Thus, option A is correct.

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Jet streams are always changing: moving to higher or lower altitudes, breaking up, and shifting in flow, depending on the season and other variables, such as energy coming from the sun. Air north of a jet stream is typically colder, while air to the south is usually warmer

Answer:

               2.22 mole

Explanation:

At STP one mole of an ideal gas occupies 22.4 L of volume.

Hence,

Volume = mol × 22.4 L/mol

solving for mole,

Mole = Volume / 22.4 L/mol

Putting values,

Mole = 49.8 L / 22.4 L/mol

Mole = 2.22 mole

Answer:

Explanation:

The electrons revolved around the nucleus, like the rings revolving around Saturn. In 1911, Rutherford showed that Thomson's model was "wrong": the distribution of positive and negative particles was not uniform. Rutherford showed that the atom contains a small, massive, positively charged nucleus.

The Thomson's atomic model is also called the plum pudding model. His atomic model was discarded after the discovery of Rutherford's model of atom.

According to Thomson's atomic model, an atom is considered as a uniform sphere of positive electricity with electrons embedded throughout which gives the most stable arrangement like raisins scattered in a plum pudding.

Rutherford showed that Thomson's model is wrong, because the distribution of positive and negative particles was not uniform. According to Rutherford's model most of the mass and positive charge of an atom is concentrated in a very small region called the nucleus.

The nucleus at the center of atom is surrounded by negatively charged particles which balance the positive charge on the nucleus. Thus the atom as a whole is electrically neutral.

Thus the negative charge is distributed through out the positive charge is the wrong hypothesis of Thomson's model.

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#SPJ7

Answer:

it's kenetic energy

Explanation:

Kinetic energy is a form of energy that an object or a particle has by reason of its motion.

C. kinetic energy

I need a 20 character limit so here's more words

Answer:

The answer is 4.28 moles

Explanation:

This is super easy okay, you won't forget this!

Basically mole ratios, we're just looking at the coefficients in front of the compounds, multiplying them, and dividing them as we see fit.

In this example, you can see how you need 2 moles of lithium bromide (LiBr) for the reaction, and 2 moles of lithium chloride (LiCl) will be produced.

Basically, the molar ratio is when you divide numbers and see how much of this do I have for that (if that makes sense).

So if you were to divide the 2 moles of LiBr / 2 moles of LiCl = 1. So we know that the mole ratio for LiBr to LiCl is 1:1 or 2:2, either or, it's the same thing.

SO THE BIG IDEA, if we have 4.28 moles of lithium bromide reacting, we should also have 4.28 moles of lithium chloride produced, BECAUSE the mole ratio is 1:1.

I hope this makes sense please tell me if it doesn't, I will try my best to explain a little more.

Answer:

8,350 Joules

Hope this helps

Answer:

B: circulatory system

Explanation:

The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

Answer:

Circulatory system

Explanation:

pulmonary artery plays a role of transporting oxygen from the lungs back to the heart...

And also most blood vessels transport nutrients to and from the heart

Answer:

Explanation:

0.5 i go to k12 i jus took the test

Answer:

0.5

Explanation:

took the test

Answer:

motion

Explanation:

Answer:

The answer is

→ The process of movement/motion.

Explanation:

Movement/motion is when you change places from where you currently are.

Therefore, movement/motion is your answer.

Hope this helped! :^)

Answer:

The light wave could be absorbed by the object, in which case its energy is converted to heat.

Explanation:

Answer:

The answer is C for sure!

Explanation:

In the picture we have the electrons given, so we have to determine the nucleons and protons.

The molality of the sucrose solution is 1.16 m

The molality of a solution is defined as the mole of solute per unit kilogram (Kg) of water. Mathematically, it can be expressed as:

Molality = mole / mass (Kg) of water

Mole = mass / molar mass

Mole of sucrose = 37.4 / 342.2

Mole of sucrose = 0.109 mole

Molality = mole / mass (Kg) of water

Molality of sucrose = 0.109 / 0.0942

Molality of sucrose = 1.16 m

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Answer:

Color or colour is the visual perceptual property corresponding in humans to the categories called blue, green, red, etc. Color derives from the spectrum of light interacting in the eye with the spectral sensitivities of the light receptors.Explanation:

Answer:

Energy changes in reversible reactions

If a reaction is exothermic in one direction, it will be endothermic in the other direction. The same amount of energy is transferred in both the forwards and reverse reaction.

Answer:

Explanation:

The basic idea of a hypothesis is that there is no predetermined outcome. For a solution to be termed a scientific hypothesis, it has to be an idea that can be supported or refuted through carefully crafted experimentation or observation.

Answer:

D because there's no minerals its just the ice

Explanation:

Answer:

Ice breaking a rock

Explanation:

Answer:

41

Explanation:

w = mg

m = w/g

m = 410/10

= 41

Answer:

Conductor

Explanation:

Electricity travels through water quickly.