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fgiga [73]
3 years ago
8

X+KOH→CH-CH=CH 2 +KBr+H2O. What is the compound represent “x”?

Chemistry
1 answer:
Andrews [41]3 years ago
6 0

Answer:

I guess it is HBr

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How many moles of KF would need to be added to 2500 ml of water to make 1.2 M solution?
Oduvanchick [21]

The number of moles of KF needed to prepare the solution is 3 moles

<h3>What is molarity?</h3>

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

<h3>How to determine the mole of KF </h3>
  • Volume = 2500 mL = 2500 / 1000 = 2.5 L
  • Molarity = 1.2 M
  • Mole of KF =?

Molarity = mole / Volume

1.2 = mole of KF / 2.5

Cross multiply

Mole of KF = 1.2 × 2.5

Mole of KF = 3 moles

Learn more about molarity:

brainly.com/question/9468209

#SPJ1

4 0
2 years ago
Select all that apply. Atoms are made up of _____. protons neutrons compounds elements electrons
charle [14.2K]

Answer:

protons, nuetrons, electrons

Explanation:

compounds and electrons are made up of atoms.

8 0
3 years ago
CO2 + H20. What is the total number of moles of Oz required to completely
maria [59]
I think the right answer is 2.5
7 0
3 years ago
At 150°C the decomposition of acetaldehyde CH3CHO to methane is a first order reaction. If the
Crank

The decomposition time : 7.69 min ≈ 7.7 min

<h3>Further explanation</h3>

Given

rate constant : 0.029/min

a concentration of  0.050 mol L  to a concentration of 0.040 mol L

Required

the decomposition time

Solution

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time

For first-order reaction :

[A]=[Ao]e^(-kt)

or

ln[A]=-kt+ln(A0)

Input the value :

ln(0.040)=-(0.029)t+ln(0.050)

-3.219 = -0.029t -2.996

-0.223 =-0.029t

t=7.69 minutes

4 0
3 years ago
There is a photon with a frequency of 8x10^12 Hz. What is the energy of this<br> photon?
jarptica [38.1K]

Answer:

33.085476 meV ≈ 33 meV

Explanation:

Hope this helped!

7 0
3 years ago
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