Please help!
Fe2O3 + C → CO + Fe

Answer:

133.34 g/mol

Explanation:

Answer:

the scrubby plants in the chaparral biome fix CO2 from the atmosphere through photosynthesis and store carbon as starch. The energy from these carbohydrates is passed on to animals and insects that consume the plants. These primary consumers will pass on the carbon’s energy to other animals that prey on them. When plants or animals die and decompose, the carbon in their bodies returns to the earth. Fossil fuels, which are made from ancient decomposed matter, release carbon back into the atmosphere as CO2 when they are burned

Answer:

Nitrogen

Explanation:

1 arrow = 1 electron

there are 7 arrows = 7 electrons

Nitrogen has 7 electrons or 7 protons

Answer:

The U.S. Air Force needed to understand the atmosphere for communications and to design heat-seeking missiles. At certain wavelengths carbon dioxide and water vapor block radiation. So the new missiles couldn't see very far if they used a wavelength that CO2 absorbs.

Explanation:

Answer:

Computers are more useful for quick calculations.

Computers are easier to transport to remote locations.

Computers have lower power consumption.

Computers hold larger amounts of data.

give brainliest pls

Answer:

baking soda - sodium hydrogen carbonate

bleach (liquid) - sodium hypochlorite

bleach (solid)- sodium hypochlorite

borax- sodium tetraborate decahydrate

brimstone- magnesium sulfate heptahydrate (sulfur)

cream of tartar- potassium hydrogen tartrate

Epsom salt- magnesium sulfate

Freon- Dichlorodifluoromethane

galena- gray lead sulfide

grain alcohol- ethanol

graphite- carbon silicon family

gypsum- calcium sulfate

hypo- sodium thiosulfate

laughing gas- nitrous oxide

lime- calcium hydroxide

limestone- calcium hydroxide

lye- sodium hydroxide

(i'll finish the rest later)

Explanation:

Answer:

C, A pulley that lifts an elevator off the ground

Explanation:

Basically, it's just easier than a human doing it because that would probably be too much work for humans.

Answer:

C

Explanation:

Answer:

25 percent solution by mass of ethanol means that 100 gram of solution contains 25 gram of solute i.e-ethanol. Now,as the density of the solution is 1 g/ml so 100 g of the solution has a volume of 100 ml. So,we have 25 gram of ethanol in 100 ml of the solution. So we have 250 g of ethanol in 1 litre of solution.

Explanation:

Answer:

the answer is themodynamics

Answer:

Who was the first president of United States?

A Benjamin Franklin

B George Washington

C Abraham Lincoln

D John Adams

Answer:

High points please help *NO TROLL ANSWERS*

kayla wants to find the width, AB, of a river. she walks along the edge of the river 150 ft and marks point c. then she walks 32 ft further and marks point D. she turns 90° and walks until her location, point A, and point C are collinear. she marks point E at this location, as show.

The type of molecule which gives plants their firm structure Carbohydrates   (option A) as there develop cellular structures like cell walls or stems .

Complex organic compounds called carbohydrates serve multiple functions for plants- primarily as their primary energy source and secondly to build specific cellular structures like cell walls or stems. Undoubtedly, one of the most ubiquitous types of carbohydrates seen in these green wonders is cellulose which plays a dominant role in maintaining their structural integrity.

Cellulose consists of tightly intertwined chains formed by glucose molecules whose interaction results in exceptional durability making it paramount for plant rigidity and survival alike.

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Answer:

Here, this may help you:

https://brainly.in/question/28298343

Explanation:

The density of the larger broken piece from the original piece would remain 1.500 g/cm3

Density = mass/volume

The ratio of mass to the volume of a substance is constant.

Thus, for the long glass stirring rod, a reduction in the length means a reduction in its volume. Also, there would be a commensurate reduction in the mass of the glass rod.

At the end of the day, the ratio of mass/volume of the glass rod, be it the larger or the smaller piece, remains the same.

Thus, the density would remain 1.500 g/cm3.

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Although we do not have the graph needed to answer this question, we can confirm that if the toy were to be accelerating, one should see this on the graph as a curved line.

When graphing motion in terms of distance over time, we can use the shape of the line in the graph to determine if the speed is constant or if there is an acceleration present. If the line is straight, the speed is constant, but if there is a curve, there will be acceleration.

Therefore, we can confirm that if the toy were to be accelerating, one should see this on the graph as a curved line.

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We have that the new values of the following substances HCl(g), N2O(g), H(g) is that the remain the same as

dG=dH-TdS remains the same.

Question Parameters:

s P= 2 bar

HCl(g)

N2O(g)

H(g)

Generally the equation for the Change in Heat energy  is mathematically given as

dG=dH-TdS

Where

dH=CpdT

Therefore, With no change in entalpy dH only changes  when there is a change in dT

dS=CpInT

With dS independent of pressure S is constant

Hence, dG=dH-TdS remains the same

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Answer:

here

Explanation:

Nitrates and nitrites are interrelated by oxidation reduction; nitrite is the breakdown product of nitrate. Many experts believe that nitrates are relatively harmless until they break down into nitrites.

Answer: Through photosynthesis carbon dioxide and water is converted to glucose which is more ordered.

Explanation:

Besides that initial consideration there is solar energy being added to the reaction which might be worth noting.

More important to note is that organic molecules/compounds such as glucose are higher in order compared to inorganic molecules/compounds such as water.

Answer:

adwasd

Explanation:

Answer:

47.8 %

Explanation:

Ar of Zn = 65

Mr of ZnCl2 = 65 + (2 * 35.5)

= 65+ 71

= 136

Percentage Composition

= ( Ar of element × No of atom in formula ) / Mr of compound * 100 %

% composition of Zn = ( 65*1 )/ 136 × 100 %

= 47.7941...

= 47.8 % ( 3 s.f )

Answer:

•How do you find the delta H per grams in an chemical formula

➢ Subtract the sum of the heats of formation of the reactants from that of the products to determine delta H: delta H = –110.53 kJ/mol – (–285.83 kJ/mol) = 175.3 kJ.

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Scientific knowledge be used to solve a practical problem through all of the above which are:

This is defined as the movement of air and other gases on the surface on the earth. Wind intensity varies according to various factors and it's best to study it as helps to prepare for unforeseen circumstances.

Its knowledge helps in the building of windmills so as to ensure efficient capture of winds.

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Answer:

molar mass of CaCO3=40+12+3(16)

=100 gmol-1

Ca percent composition=40/100*100%

=40%

C percent composition=12/100*100%

=12%

0 percent composition=48/100*100%

=48%

Answer:

Since we're sticking with theoretical values instead of experimental, Percent Composition would be (Molar Mass of the element) / (Molar mass of compound) x 100%

Molar mass of Calcium: 40g/mol

Molar mass of Carbon: 12g/mol

Molar mass of Oxygen: 16g/mol

Molar mass of CaCO3 (Calcium Carbonate) = (40) + (12) + (16)*3 = 100g/mol

Percentage composition of Calcium = [tex]\frac{40}{100} \ * \ 100 =[/tex] 40% of Calcium

Percentage composition of Carbon = [tex]\frac{12}{100} \ * \ 100 =[/tex] 12% of Carbon

(For the next one, there are 3 oxygen, so it'd be 16x3 = 48g/mol)

Percentage composition of Oxygen = [tex]\frac{48}{100} \ * \ 100 =[/tex] 48% of Oxygen

Answer:

Cis-2-methyl-3-hexene

Cis-2-methyl-3-hexene is the IUPAC name for the compound shown here.

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Answer:

The IUPAC name for NH3 would be Azane

Explanation:

Answer:   1. nitrogen trihydride

                2. ammonia

Explanation: 1.Choose the correct name for NH3 according to the naming system being used. What is the IUPAC name for NH3?

2. What is the common name for NH3?

Answer:

Is the solid an explosive?

Explanation:

..because then it would blow up.

Everything else would melt and phase transfer would occur from a solid to liquid.

Answer:

Componets of Homogenous mixture cannot be seperated by using physical methods

Explanation:

hope it helps,God bless