Chemistry High School

Answer this chemistry question below

Answers

Answer 1

Its D :) your welcome

Related Questions

2C4 H10 + 13O2 -→ 8CO2 + 10H2O If 356 moles of O2 are available to react, how many moles of CO2 will fom?

Answers

Answer:

Answer:

The mole ratio of C₄H₁₀ and CO₂ is 2 : 8, which simplifies to 1 : 4.

Explanation:

The mole ratio is the relative proportion of the moles of products or reactants that participate in the reaction according to the chemical equation.

The chemical equation given is:

2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O

Once you check that the equation is balanced, you can set the mole ratios for all the reactants and products. The coefficients used in front of each reactant and product, in the balanced chemical equation, tells the mole ratios.

In this case, they are: 2 mol C₄H₁₀ : 13 mol O₂ : 8 mol CO₂ : 10 mol H₂O

Since you are asked about the mole ratio of C₄H₁₀ and CO₂ it is:

2 mol C₄H₁₀ : 8 mol CO₂ , which dividing by 2, simplifies to

1 mol C₄H₁₀ : 4 mol CO₂, or

1 : 2.

Explanation:

Na
Which term describes argon? *
(2 points)

alkali metal
halogen
transition metal
noble gas

Answers

Answer:

Argon is a noble gas

Hope this helps

why is it important for the appendages of an arthropod to be joined

Answers

Answer:

you mean "jointed." jointed appendages give arthropods much greater movement flexibility and range.

Find a periodic table and look for the atomic mass of sodium, Na. What is it?

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Answer:

Atomic mass: 22.989769 u

Explanation:

(NH4)2SO4. How many N are there?

Answers

2
Explain

Hope it help u

You're invited to a hot tub party! Being the science geek that you are, you decide to calculate the amount of mL in the 650.0 gallon hot tub!

Answers

Answer:

cool but can we have a little bit bigger

Explanation:

The nucleus of an atom contains ________________________________________.

Answers

Answer:

protons(positively charged) and the neutrons (no charge)

Explanation:

Answer:

The nucleus of an atom contains protons and neutrons.

When an electron in an atom moves from high to low
energy levels:
a alpha particles are emitted
b gamma rays are emitted
c energy is emitted as electromagnetic radiation
d energy is absorbed

Answers

Answer:energy is emitted as electromagnetic radiy

Explanation:

(25 points)Diesel fuel is used in the engines of the machines and trucks at the quarry. Which of these is the main energy transformation as the fuel is used by the engines
1 Electrical energy is converted to heat energy.
2 Heat energy is converted to potential energy.
3 Electrical energy is converted to kinetic energy.
4 Chemical energy is converted to kinetic energy.

Answers

1 is correct, i’m not sure if that’s the answer your looking for because of the wording, but if it’s a multiple choice answer then that’s it

Suggest why we have discovered more elements today compared to our ancestors 50,000 years ago

Answers

Answer:

well, we have so much better and more tech and we are a lot smarter than we were before.

Explanation:

Answer:

We have way more advanced technology than our ancestors and we have a better idea of how the earth was millions of years ago.

Explanation:

Predict the empirical formulas of the ionic compounds formed from the following pairs of elements.
Mg and Cl

Cs and Br

Ga and I

Na and O

Sr and F

Ca and P

Answers

Explanation:

MgCl2

CsBr2

Na2O

SrF2

CaP2

A 170.0 g sample of an unidentified compound contains 29.84 g sodium, 67.49
g chromium, and 72.67 g oxygen. What is the compound's empirical formula?

Answers

The empirical formula : Na₂Cr₂O₇

Further explanation

Given

170 g sample contains :

29.84 g sodium, 67.49 g chromium, and 72.67 g oxygen

Required

The compound's empirical formula

Solution

mol ratio of elements :

Na : 29.84 : 23 g/mol = 1.297

Cr : 67.49 : 51,9961 g/mol = 1.297

O : 72.67 : 16 g/mol = 4.54

Divide by 1.297

Na : Cr : O = 1 : 1 : 3.5 = 2 : 2 : 7

The area of a telescope lens is 6.668 × 103 mm2. What is the area in square feet (ft2)? Enter your answer in scientific notation

Answers

Answer:

[tex]7.13\times 10^{-2}\ ft^2[/tex]

Explanation:

The area of a telescope lens is 6.668 × 10³ mm²

We need to convert the area in ft².

We know that,

[tex]1\ mm^2=1.07\times 10^{-5}\ ft^2[/tex]

It means,

[tex]6.668 \times 10^3\ mm^2=6.668 \times 10^3\times 1.07\times 10^{-5}\ ft^2\\\\=0.0713\ ft^2[/tex]

[tex]0.0713\ ft^2=7.13\times 10^{-2}\ ft^2[/tex]

So, the required answer is [tex]7.13\times 10^{-2}\ ft^2[/tex].

An elephant and a parakeet standing on ledge will have a different amount of potential energy because of their . this is for science actually

Answers

Answer:

Mass

Explanation:

How many moles of ammonia gas are produced from 3.6 moles of hydrogen gas and excess nitrogen gas?

Answers

Answer:

If so, the limiting reagent of Nitrogen would allow 16 moles of Ammonia to be produced.

Explanation:

Please help I will give brainliest

Answers

Answer:

Explanation:

c. - vaccine

b. - immunity

d. - phagocyte

f. - b cell

e. - t cells

a. active immunity

After which reaction. is there solid left in the reaction chamber
a)Sodium Azide
b)Ammonium Nitrate
c)Nitroglycerin
d)Both A & B

Answers

Answer:

Explanation:

If we add more SO2 gas to the reaction chamber. To the left. The reaction would drive

backwards to re-establish equilibrium (more reactants made).

Animals need various nutrients in order to live and grow. Nitrogen, for example, is a nutrient that is needed to form molecules found in genetic material. How do animals obtain nitrogen? A. They eat plants which have absorbed nitrogen from the soil. B. They create nitrogen in their bodies using other nutrients as building blocks. C. They breathe in and absorb nitrogen gas from the atmosphere. D. all of these

Answers

Answer:

It's A

Explanation:

Animals get the nitrogen they need by eating plants or other animals that contain nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use.

HELPPPP DUE NOWWW (5)

Answers

Answer:

All the answers you chose are correct

Explanation:

Answer:

I cant see the fist question but all that you chose are correct

Explanation:

does a high melting point mean the substance will melt faster or slower?

Answers

Answer:

slower...............

Answer:

it'll melt slower

Explanation:

because it needs to get to a higher temperature ig

What would be the most likely explanation if none of the tested paint samples had turned brown?
1. The reaction was not actually caused by UV light.
2. The reaction only happens in real sunlight, not artificial.
3. The paint behaves differently on a canvas than it does in a laboratory.
4. None of the tested mixtures matched the chemical composition of Van Goghs paint.

Answers

Answer:4/d

Explanation:

i did this before

Why is air considered a solution?

Answers

Answer:Air is a solution made up of many gases. ... There is more nitrogen than any other gas in air, so it is considered the solvent in an air solution.

Explanation:

A student has a mixture of salt and iron filings.
Which property can the student use to separate the different parts of the mixture?

Answers

Answer:

aksksks

Explanation:ss

zxrkkrkrkkrkkrrkr

Chem lab report is attached to the question plz help.

Answers

Answer: When I opened the doc it didn't work..

Explanation:

What does the pattern in the image above represent?
OA. the phases of the Moon
OB. the patterns of the stars
OC. the seasons of the year
OD. the cycle of the Sun

Answers

Answer:

i dont know how to answer this because u need a pic of what you need

Explanation:

sorry just need a picture to confirm answer

In chemical reactions, what does the principle of conservation of mass mean?

Answers

I think It means that any balanced equation is conserved. Meaning that the equation is equal. The law states matter can’t be created or destroyed. In chemical reactions the mass of an element is the same before and after the product. There’s two sides two an equation the reactants side and the product’s side. Hope this helps.

Principle of Conservation of Mass
In simple terms, it means that in a chemical equation, the mass of the reactants is same as mass of products. No mass is created, and cannot be transformed.

How many atoms of silver are in a bracelet that has a mass of 13.94 grams?

Answers

Number of Silver atoms : N = 7.8 x 10²² atoms

Further explanation

Given

mass of bracelet : 13.94 g

Required

Number of atoms

Solution

Assuming the bracelet consists entirely of silver

mol of silver :

= mass : molar mass

= 13.94 g : 107,8682 g/mol

= 0.129

Number of atoms :

N = n x No(No = Avogadro's number)

N = 0.129 x 6.02 x 10²³

N = 7.8 x 10²² atoms

Describe what happens to a liquid's molecules as it boils and changes into a gas.

Answers

Answer:

the particels becomes loose and wild, making gas happen when it is heated up

Liquids evaporate faster as they heat up and more particles have enough energy to break away. The particles need energy to overcome the attractions between them. At this point the liquid is boiling and turning to gas.

what type of bond is Cl and Br?

Answers

Answer: Polar bond

Explanation:

Is energy part of the system or surrounding?

Answers

Answer:

Se Puede Traducir?

Explanation:

Mmm?

Answer:

i think it is surroundings

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