Can someone please help me answer these Questions pleaseee

Answer: 116.15 g/mol

Answer:

Photoautotrophs

Explanation:

I think you mean "autotroph"

The answer is photoautotrophs. they use sunlight to make their food

Don't forget to rate the answer for others

Answer:

mars

Explanation:

just googled it

In addition to Earth, mars  planet has evidence of water on the surface.

Evidence proves that financing results  works Our strong evidence based on the  proves that more lives and real can be changed through access to affordable inventing  for water and sanitation.

Evidence of finding water on Mars first to be known  in 2000, with the appearance of gullies that suggested us about  a liquid origin. Their formation has been hotly in  debated over the ensuing years.

Therefore, addition to Earth, mars  planet has evidence of water on the surface.

Learn more about  evidence of water, here:

https://brainly.com/question/3406927

#SPJ6

Fe and S are already balanced in this equation

Balanced indicates that the number of elements in question has the same number of atoms both on the left side (the number on the reactants side) and on the right side (the number on the product side)

Even though one of the elements is said to be balanced, the chemical equation as a whole cannot be said to be balanced, because the chemical equation has several components of the constituent elements.

To balance chemical equations, a coefficient in front of the compound is usually added either in the reactants or products

Reaction

FeS₂ + Cl₂ → FeCl₃ + S₂Cl₂

From this equation, it can be shown that: the Fe and S elements are balanced because the numbers are equal both on the left and right, while the Cl elements are not yet balanced

Fe, left=1, right=1 ⇒ balanced

S, left=2, right=1 ⇒ balanced

Cl, left=2, right=5⇒ not balanced

For balanced equations:

2FeS₂ + 5Cl₂ → 2FeCl₃ + 2S₂Cl₂

Answer:

21.9 g C

Explanation:

Fe₂O₃  +  3 C  ⇒  2 Fe  +  3 CO

This is your chemical equation.  

To find the grams of C required, first convert grams of Fe₂O₃ to moles using the molar mass (159.69 g/mol).  

(97.1 g)/(159.69 g/mol) = 0.608 mol Fe₂O₃

Then, use the mole ratio between Fe₂O₃ and C to convert moles of Fe₂O₃ to moles of C.  You can find the mole ratio by looking at the chemical equation.

(0.608 mol Fe₂O₃) × (3 mol Fe₂O₃/1 mol Fe₂O₃) = 1.824 mol C

You can then convert moles of C to grams using the molar mass (12.01 g/mol).

(1.824 mol) × (12.01 g/mol) = 21.9 g

Answer:

Surface pressure: 140 kPa

Surface gravity: 10.44 m/s2 (34.3 ft/s2); 1.065 g

Surface area: : 4.27×1010 km2 (1.65×1010 sq mi

Average orbital speed: 9.68 km/s (6.01 miles/s)

Answer:craters

Explanation:

Answer:

0.625mol/L

Explanation:

Given parameters:

Number of moles of solute = 5moles

Volume of solvent = 8L

Unknown:

Molarity = ?

Solution:

Molarity is the number of moles of solute per unit volume of solution. It is mathematically expressed as

  Molarity  = [tex]\frac{number of moles }{Volume}[/tex]  

  Molarity  = [tex]\frac{5}{8}[/tex]   = 0.625mol/L

Answer: -2.1 x 10^10 N

Explanation:

Answer:

True

Explanation:

Noble gases already have the maximum number of valence electrons they can hold so they are the only stable group

Answer:

D. When the concentrations of reactants and products stay the same

Explanation:

[tex]\bigstar[/tex] Dynamic equilibrium is when rate of forward reaction is equal to the

   rate of backward reaction. The concentration of Product and Reactant

   are both same, no net change. Hence Option D is correct.

When the concentrations of reactants and products stay the same at this point a chemical reaction reach dynamic equilibrium.

Hence, Option (D) is correct answer.

A chemical reaction is a process in which chemical bonds between atoms to break and reorganize, to form other new substances.

Dynamic equilibrium occurs in reversible reactions when the number of particles becomes product is equal to number of particles becomes reactant. Chemical equilibrium is dynamic in nature.

Thus from the above conclusion we can say that When the concentrations of reactants and products stay the same at this point a chemical reaction reach dynamic equilibrium.

Hence, Option (D) is correct answer.

Learn more about the Dynamic Equilibrium here: https://brainly.com/question/1233365
#SPJ2

Answer:

"After 1 half-life there will be 50% of the original isotope, and 50% of the decay product.

After 2 half-lives there will be 25% of the original isotope, and 75% of the decay product.

After 3 half-lives there will be 12.5% of the original isotope, and 87.5% of the decay product.

After 4 half-lives there will be 6.25% of the original isotope, and 93.75% of the decay product." -Stephen Frantz, Former Director of the Reed College Nuclear Reactor

Explanation:

Answer:

2.5 I don't have a explanation

Answer:

The correct option is AlFA

Explanation:

There is no element in the periodic table with the symbol of A. Thus, the compound AlFA is wrong and cannot be a salt made from main group elements. CaO is calcium oxide, Al₂O₃ is aluminium oxide and Ca₃N₂ is calcium nitride - all are evidently made from elements from the main groups of the periodic table (except the AlFA)

Answer:

yeah someone explain

Explanation:

tttttttttt%ttttttt

Answer:

A heat exchanger is device which is designed to transfer heat from one matter to another. In nuclear power plants, these heat exchangers are used to pass heat from primary system to the secondary system. In the process they produce steam from water, they are also called steam generators or pressurized water reactors.

Answer:

N2S2

I just took the quiz and it was right

Answer:

Sulfur Nitride

Answer:

The answer is B. A rolling skateboard slows down because some of its kinetic energy changes to heat.

Explanation:

The law of conservation says energy cant be created or destroyed .Which basically eliminates all of them except b. It can only be transferred

Answer:

b

Explanation:

Answer:

B: nuclear energy.

Explanation:

It is emission-free and it saves 2.4 billion tons of carbon emissions per year. Also, the level of hazard of nuclear waste does decrease during the time.

Hope that helps!

Answer:

b

Explanation:

it i b ur welcome

Answer: um sure so 2+4= 24 then 9+7=97

Explanation: bc if you have 2 and you have 4 and if you smash that together you get 24 and 9 and 4 smash that together and you get 94 see so easy

Answer:

399.88 g/mol

Explanation:

Iron(III) sulfate, is the chemical compound with the formula Fe₂(SO₄)₃. Usually yellow, it is a salt and soluble in water. A variety of hydrates are also known. Solutions are used in dyeing as a mordant, and as a coagulant for industrial wastes.

Answer:

When a boy smells the aroma coming from the pot on the stove is actually detecting the chemicals coming from the air which comes from hot food that dissolves in the mucus present in the nasal cavity that carries tiny hairs made up of the nerve fibers that absorb these chemicals and excite or stimulate the olfactory receptors.

Various types of a distinct aroma or smell lead to a specific combination of the olfactory cells to make a specific smell. These combination patterns transported to the olfactory bulb along axons; a long extended neuron.

The sensory patterns or information encoding the smell of food present in the pot reaches the primary olfactory cortex in the brain, which is present on the anterior surface of the temporal lobe, and decodes accordingly.

Answer:You breath in what you smell and if it smells good or not you usely get up an see what is in the kitchen

Explanation:

Answer:

D

Explanation:

magnesium always lose 2 electrons

Answer:

As electrons are added to the valence shell, an extra proton (i.e fundamental, positively charged nuclear particle) is added to the element's nucleus. As electrons add and Z the atomic number increases 1 by 1, nuclear charge WINS, and electronic radii contract.

Explanation:

Hope this helps you

Crown me as brainliest:)

Answer:

0.03g

Explanation:

Given parameters:

Number of moles of Na = 0.00125mole

Unknown:

Mass in grams of Na = ?

Solution:

To find the mass of this substance, we simply multiply the number of moles with the given molar mass of Na.

 Mass of Na  = number of moles x molar mass

 Mass of Na  = 0.00125 x 23   = 0.03g

Answer and explanation:

A) An ideal fuel must:

- easy to transport and storage.

- have a high calorific value.

B) The calorific value for a fuel is the amount of heat - measured in Joules- which is produced during the complete combustion of the fuel. It is expressed in Joules per Kg of fuel (J/kg).

C) From the data:

mass of fuel = 2 kg

heat produced = 48,000 KJ

We calculate the calorific value by dividing the heat produced by the mass of fuel, as follows:

calorific value = heat produced/mass of fuel = (48,000 KJ)/(2 kg)= 24,000 kJ/kg

Since 1 KJ= 1000 J, we can express the calorific value in J/kg as follows:

24,000 kJ/kg x 1000 J/1 kJ = 2.4 x 10⁷ J/kg

Answer:

A :metallic

B :conducts electricity as a solid

C :covalent

D :does not conduct electricity

Explanation:

Answer:

A = ✔ metallic

B = ✔ conducts electricity as a solid

C = ✔ covalent

D = ✔ does not conduct electricity

Explanation:

edge 2023