If the theoretical yeild for a reaction is 156 grams and you actually made 122 grams of the product, what is your percentage yeild

Answers

Answer 1

Answer: The theoretical yield is the amount of product formed from the limiting reactant available. The actual yield is the amount of product formed after the reaction proceeds. The percent yield is calculated as:

Percent Yield = (actual yield / theoretical yield) x 100%
Percent Yield = (122 g / 156 g) x 100%
Percent Yield = 78.2%

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In a reaction progress curve, which point on the curve corresponds to an intermediate of the reaction?

Answers

Answer : The valley between the two peaks is usually referred to intermediate formation of the reaction. The two mountain peaks when formed in a reaction the stable phase between them is exactly when an intermediate is formed and often observed on the curve.

The valley between two peaks

The universe is mostly made up of what?

Answers

the universe is made mostly of empty space nothing else even close.

Nitrogen gas has the chemical formula N2. One molecule of nitrogen gas is made up ofA.
one atom of nitrogen and one atom of oxygen.
B.
two atoms of nitrogen and one atom of oxygen.
C.
two atoms of nitrogen.
D.
one atom of nitrogen.

Answers

Nitrogen gas has the chemical formula N2. One molecule of nitrogen gas is made up of two atoms of nitrogen.

The correct option is C.

Explanation:

Nitrogen gas has the chemical formula $N_(2)$ , which means that two atoms of nitrogen element combined to form nitrogen gas.

The combination of two atoms of element nitrogen produce dinitrogen atom.

Dinitrogen is the nitrogen gas usually present in atmosphere of the earth in abundance.

2 atoms of nitrogen element

N + N = $N_(2)$

the gas is colorless and odorless formed at standard condition of temperature and pressure. The two nitrogen atoms are tightly bonded with triple bonds in between the atoms.

Which solution has the same boiling point as 0.25 mol CaCl2 dissolved in 1000 g water?Help Please, Thanks!

0.75 mol sucrose dissolved in 1000 g water
1.0 mol ethylene glycol dissolved in 1000 g water
0.50 mol CaCl2 dissolved in 1000 g water
0.25 mol NaCl dissolved in 1000 g water

Answers

The boiling point of water at 1 atm is 100 degrees celsius. However, when water is added with another substance the boiling point of it rises than when it is still a pure solvent. This called boiling point elevation, a colligative property. The equation for the boiling point elevation is expressed as the product of the ebullioscopic constant (0.52 degrees celsius / m) for water), the vant hoff factor and the concentration of solute (in terms of molality).

ΔT(CaCl2) = i x K x m = 3 x 0.52 x 0.25 = 0.39 °C
ΔT(Sucrose) = 1 x 0.52 x 0.75 = 0.39 °C
ΔT(Ethylene glycol) = 1 x 0.52 x 1 = 0.52 °C
ΔT(CaCl2) = 3 x 0.52 x 0.50 = 0.78 °C
ΔT(NaCl) = 2 x 0.52 x 0.25 = 0.26 °C

Thus, from the calculated values, we see that 0.75 mol sucrose dissolved on 1 kg water has the same boiling point with 0.25 mol CaCl2 dissolved in 1 kg water.

What does the symbol 2CO represent in the model below? 2CO + o^2 -> 2CO2

Answers

Answer: a reactant

Explanation: online physics class

Answer:2CO (g) + O2 (g) 2CO2 (g)This Equation Means That No Matter How Much Carbon Monoxide And Oxygen ... Question: 2CO (g) + O2 (g) 2CO2 (g)This Equation Means That No Matter How Much Carbon Monoxide And Oxygen Gas Is Added To The Flask, Only 2 Moles Of CO And 1 Mole Of O2 Will React To Make Two Moles Of Co2.What Is Wrong With This Statement?

Explanation:

Because of their large mass and charge, alpha rays are the least penetrating and least dangerous.

Answers

This is true.
Beta and Gamma radiation are the most dangerous because they can penetrate the skin, and damage the cells inside.

Alpha is the least dangerous.

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