HELPPPP ASAPP 10 POINTS

Answer:

[tex]m_{Fe_2O_3}=549gFe_2O_3[/tex]

Explanation:

Hello there!

In this case, according to the given chemical reaction for this problem about stoichiometry:

[tex]4Fe+3O_2\rightarrow 2Fe_2O_3[/tex]

Whereas there is a 3:2 mole ratio of oxygen (molar mass = 32.0 g/mol) to iron (III) oxide (molar mass = 159.69 g/mol) and therefore, the correct stoichiometric setup is:

[tex]m_{Fe_2O_3}=165gO_2*\frac{1molO_2}{32.00gO_2}*\frac{2molFe_2O_3}{3molO_2} *\frac{159.69gFe_2O_3}{1molFe_2O_3} \\\\m_{Fe_2O_3}=549gFe_2O_3[/tex]

Regards!

Answer:

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Explanation:

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Answer:

0.73 and yes

Explanation:

The answers are 0.73 and yes! <3 ^-^

Answer:

108 grams

Explanation:

Answer: C

Explanation:

Don’t trust the other person it’s not A

*view photo for answer*

pay attention! the answer choices aren't always in the same order!

Answer:

Iconic bond is formed by cation and anion. A compound is made when atoms of two or more elements bond in a chemical reaction.

Explanation:

Answer:

0.0038 mole s-1

Explanation:

La velocidad de una reacción se refiere a la rapidez o la lentitud con que avanza una reacción. Se mide por la cantidad de reactivos que desaparecen por unidad de tiempo o por la cantidad de productos que aparecen por unidad de tiempo.

Número de moles de zinc = 5g / 65.37gmol-1 = 0.076 moles

Velocidad de reacción = 0.076 moles - 0 moles / 20 s - 0s = 0.0038 mole s-1

Answer:

The answer should be, 0.01

Explanation:

0.01 = moles of NaOH

[tex] \huge\boxed{ \boxed{\boxed{ \boxed{\mathcal{Answer ࿐ }}}}}[/tex]

[tex] \mathrm{1 \: mole \: of \: NaOH = 40 \: g }[/tex]

[tex] \mathrm{1g = \dfrac{1}{40} \: moles \: of \: NaOH}[/tex]

[tex] \mathrm{50g = \dfrac{1}{40} \times 50}[/tex]

[tex] \mathrm{1.25 \: moles \: of \: \: NaOH}[/tex]

_____________________________

[tex]\mathrm{ \#TeeNForeveR}[/tex]

Answer:

1 Answer. You use the fact that 1 mole of any substance contains exactly 6.022⋅1023 atoms or molecules of that substance - this is known as Avogadro's number. In your case, 1 mole of gold will have exactly 6.022⋅1023 atoms of gold.

Explanation:

Answer:

[tex]\boxed {\boxed {\sf 1.62 \ mol \ Au}}[/tex]

Explanation:

We are asked to convert atoms to moles.

We know that 1 mole of any substance contains the same number of particles (atoms, molecules, formula units etc.) This is Avogadro's Number: 6.022*10²³. For this question, the particles are atoms of gold (Au).

Let's set up a proportion using this information.

[tex]\frac {6.022*10^{23} \ atoms \ Au}{1 \ mol \ Au}[/tex]

Since we are solving for the moles in 9.75 * 10²⁴ atoms, we multiply by that number.

[tex]9.75*10^{24} \ atoms \ Au*\frac {6.022*10^{23} \ atoms \ Au}{1 \ mol \ Au}[/tex]

Flip the proportion. It will be equivalent, but the units of "atoms Au" can cancel.

[tex]9.75*10^{24} \ atoms \ Au*\frac {1 \ mol \ Au}{6.022*10^{23} \ atoms \ Au}[/tex]

[tex]9.75*10^{24} *\frac {1 \ mol \ Au}{6.022*10^{23}}[/tex]

Condense the problem into 1 fraction.

[tex]\frac {9.75*10^{24} }{6.022*10^{23}}\ mol \ Au[/tex]

[tex]1.619063434 \ mol \ Au[/tex]

The original measurement (9.75) has 3 significant figures. Our answer must have the same. For the number we found, that is the hundredth place.

The 9 in the thousandth place tells us to round the 1 to a 2 in the hundredth place.

[tex]1.62 \ mol \ Au[/tex]

9.75 * 10²⁴ atoms of gold is approximately equal to 1.62 moles of gold.

Answer:

The chemical name is magnesium chloride

Answer:

Magnesium chloride

Please mark as brainliest if answer is right

Have a great day, be safe and healthy  

Thank u  

XD

Answer:is an observation about chemical equilibria of reactions. It states that changes in the temperature, pressure, volume, or concentration of a system will result in predictable and opposing changes in the system

Explanation:

Answer: There is 125 mL of a 2.0 M CuCl2 solution are needed to make 500 mL of a 0.5 M solution

Explanation:

Given: [tex]M_{1}[/tex] = 2.0 M,      [tex]V_{1}[/tex] = ?

[tex]M_{2}[/tex] = 0.5 M,       [tex]V_{2}[/tex] = 500 mL

Formula used to calculate the volume is as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]

Substitute the values into above formula as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}\\2.0 M \times V_{1} = 0.5 M \times 500 mL\\V_{1} = 125 mL[/tex]

Thus, we can conclude that there is 125 mL of a 2.0 M [tex]CuCl_{2}[/tex] solution are needed to make 500 mL of a 0.5 M solution.

Answer:

334.7g of Calcium Hydroxide are needed

Explanation:

Based on the reaction:

2Ca(OH)2 + 2Cl2 → Ca(ClO)2 + CaCl2 + 2H2O

2 moles of chlorine react with 2 moles of calcium hydroxide.

To solve this question we must find the moles of chlorine in 300.0g. These moles = Moles of Ca(OH)2. With the moles of calcium hydroxide we can find its mass as follows:

Moles Cl₂ (Molar mass: 70.90g/mol)

300.0g Cl₂ * (1mol / 70.90g) = 4.2313 moles Cl₂ = Moles Ca(OH)₂

Mass Ca(OH)₂ (Molar mass: 74.093g/mol)

4.2313 moles Ca(OH)₂ * (74.093g / mol) =

the answer is B. Parasite.

Answer:

D

Explanation:

Answer:

0.021

Explanation:

Step 1: Write the balanced equation

2 HF(g) ⇄ H₂(g) + F₂(g)

Step 2: Calculate the value of the concentration equilibrium constant

The concentration equilibrium constant (K) is equal to the product of the concentrations of the products raised to their stoichiometric coefficients divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients.

K for this reaction is:

K = [H₂] × [F₂] / [HF]²

K = (8.4 × 10⁻³) × (8.4 × 10⁻³) / (5.82 × 10⁻²)² = 0.021

Answer:

D

Explanation:

Answer:

it is your instantaneous speed

Explanation:

Answer:

When CO2 levels become excessive, a condition known as acidosis occurs. This is defined as the pH of the

blood becoming less than 7.35. The body maintains the balance mainly by using bicarbonate ions in the

blood. As the body responds to neutralize this condition, an electrolyte imbalance – an increase of plasma

chloride, potassium, calcium and sodium, can occur.

Answer:

22.4 L

Explanation:

We'll begin by calculating the number of mole in 16.0 g of CH₄. This can be obtained as follow:

Molar mass of CH₄ = 12 + (4×1)

= 12 + 4

= 16 g/mol

Mass of CH₄ = 16 g

Mole of CH₄ =?

Mole = mass / molar mass

Mole of CH₄ = 16 / 16

Mole of CH₄ = 1 mole

Finally, we shall determine the volume of the gas. This can be obtained as follow:

Number of mole of CH₄ (n) = 1 mole

Pressure (P) = 760 mmHg = 1 atm

Temperature (T) = 0°C = 273 K

Gas constant (R) = 0.0821 atm.L/Kmol

Volume (V)?

PV = nRT

1 × V = 1 × 0.0821 × 273

V = 22.4 L

Therefore, the volume of the gas is 22.4 L

Answer:

The moon must be exactly crossing Earth's orbit of the sun for the full moon phase to be visible.

This is a situation where the Sun and the Moon are aligned on opposite sides of Earth with a corresponding illumination from the Sun.

It also occurs when the moon crosses the Earth's orbit of the sun and is denoted as option A.

Read more about Full moon here https://brainly.com/question/649027

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Answer:

Na+Cl2-----NaCl

Explanation:

it's the chemical formula of common salt.

Answer:

2Na + Cl2 → 2NaCl

Explanation:

Na + Cl2 → NaCl

We have two chlorines on the left but only one on the right so it needs to be balanced.

If we put a 2 in front of NaCl we now have 2 chlorines on both sides but now 2 sodiums on the left and one on the right

Add another 2 in front of Na to get the full balanced equation

2Na + Cl2 → 2NaCl

Answer:

true

Explanation:

The condition or progress of a reaction is represented by reaction arrows. The chemical reaction arrow is a single straight arrow that points from the reactant(s) to the product(s) and by-products, as well as side products.

I think this should help you find the answer more easy!

In toxicology, the median lethal dose, LD₅₀, LC₅₀ or LCt₅₀ is a measure of the lethal dose of a toxin, radiation, or pathogen. The value of LD₅₀ for a substance is the dose required to kill half the members of a tested population after a specified test duration.