Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Browse exam papers

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

Complete the following equation by determining the values of U and V.

Answers

u= 234

V = 91

maurice.mutuku answered the question on November 6, 2019 at 10:33

Answer Attachments

Next: State four routine practices of care and management of trees.

Previous: State four ways by which a farmer can make efficient use of a pasture crop.

View more Chemistry Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

The formula given below represents a portion of a polymer (Solved)

The formula given below represents a portion of a polymer

(a) Give the name of the polymer
(b) Draw the structure of the monomer used to manufacture the polymer

Date posted: November 6, 2019 . Answers (1)
Name the class of cleansing agents to which each belongs (Solved)

are two types of cleansing agents;
i) Name the class of cleansing agents to which each belongs
ii) Which one of these agents in (i) above would be more suitable when washing with water from the Indian ocean. Explain

Date posted: November 6, 2019 . Answers (1)
The structure below represents a polymer. Study and answer the questions that follow:- (Solved)

The structure below represents a polymer. Study and answer the questions that follow:-

(i) Name the polymer above
(ii) Determine the value of n if giant molecule had relative molecular mass of 4956

Date posted: November 6, 2019 . Answers (1)
Y grams of a radioactive isotope take 120days to decay to 3.5grams. The half-life period of the isotope is 20 days. Find the initial mass of... (Solved)

Y grams of a radioactive isotope take 120days to decay to 3.5grams. The half-life period of the isotope is 20 days.
Find the initial mass of the isotope

Date posted: November 6, 2019 . Answers (1)
Substances A and B are represented by the formulae ROH and RCOOH respectively. They belong to two different homologous series of organic compounds. If both A... (Solved)

Substances A and B are represented by the formulae ROH and RCOOH respectively.
They belong to two different homologous series of organic compounds. If both A and B
react with potassium metal:
(a) Name the common product produced by both
(b) State the observation made when each of the samples A and B are reacted with sodium hydrogen carbonate
(i) A
(ii) B

Date posted: November 6, 2019 . Answers (1)
The scheme below shows some reactions starting with ethanol. Study it and answer the questions that follow:- (Solved)

The scheme below shows some reactions starting with ethanol. Study it and answer the questions that follow:-

Date posted: November 6, 2019 . Answers (1)
(a) Draw the structure of pentanoic acid (b) Draw the structure and give the name of the organic compound formed when ethanol reacts with pentanoic acid... (Solved)

(a) Draw the structure of pentanoic acid
(b) Draw the structure and give the name of the organic compound formed when ethanol reacts with pentanoic acid in presence of concentrated sulphuric acid

Date posted: November 6, 2019 . Answers (1)
Draw the structural formulae of two compounds that may be reacted to form ethylpropanoate (Solved)

Draw the structural formulae of two compounds that may be reacted to form ethylpropanoate

Date posted: November 6, 2019 . Answers (1)
a) Write an equation showing how ammonium nitrate may be prepared starting with ammonia gas (b) Calculate the maximum mass of ammonium nitrate that can be... (Solved)

a) Write an equation showing how ammonium nitrate may be prepared starting with ammonia gas
(b) Calculate the maximum mass of ammonium nitrate that can be prepared using 5.3kg of ammonia (H=1, N=14, O=16)

Date posted: November 6, 2019 . Answers (1)
The flow chart below represents a series of reactions starting with ethanoic acid:- (Solved)

The flow chart below represents a series of reactions starting with ethanoic acid:-

(a) Identify substances A and B
(b) Name the process I

Date posted: November 6, 2019 . Answers (1)
The structure below represents a cleansing agent. (Solved)

The structure below represents a cleansing agent.

a) State the type of cleansing agent represented above
b) State one advantage and one disadvantage of using the above cleansing agent.

Date posted: November 6, 2019 . Answers (1)
Give the IUPAC name for each of the following organic compounds; (Solved)

Give the IUPAC name for each of the following organic compounds;

Date posted: November 6, 2019 . Answers (1)
Study the scheme given below and answer the questions that follow; (Solved)

Study the scheme given below and answer the questions that follow;

i) Name the reagents used in:
Step I:
Step II
Step III
ii) Write an equation to show products formed for the complete combustion of CH = CH
iii) Explain one disadvantage of continued use of items made form the compound formed in step III

Date posted: November 6, 2019 . Answers (1)
a) Give the names of the following compounds: i) CH₃CH₂CH₂CH₂OH ii) CH₃CH₂COOH iii) CH₃C – O- CH₂CH₃ (Solved)

a) Give the names of the following compounds:
i) CH₃CH₂CH₂CH₂OH
ii) CH₃CH₂COOH
iii) CH₃C – O- CH₂CH₃

Date posted: November 6, 2019 . Answers (1)
Study the schematic diagram below and answer the questions that follow:- (Solved)

Study the schematic diagram below and answer the questions that follow:-

(i) Identify the following:
Substance Q
Substance R
Gas P
(ii) Name:
Step 1
Step 4
(iii) Draw the structural formula of the major product of step 5
(iv) State the condition and reagent in step 3

Date posted: November 6, 2019 . Answers (1)
Study the scheme below and use it to answer the questions that follow:- (Solved)

Study the scheme below and use it to answer the questions that follow:-

i) Name the following compounds:-
I. Product T ………………………… II. K ………
ii) State one common physical property of substance G
iii) State the type of reaction that occurred in step J
iv) Give one use of substance K
v) Write an equation for the combustion of compound P
vi) Explain how compounds CH₃CH₂COOH and CH₃CH₂CH₂OH can be distinguished chemically
vii) If a polymer K has relative molecular mass of 12,600, calculate the value of n (H=1 C =12)

Date posted: November 6, 2019 . Answers (1)
Name the compound with the formula below : CH₃CH₂CH₂ONa (Solved)

Name the compound with the formula below :
CH₃CH₂CH₂ONa

Date posted: November 6, 2019 . Answers (1)
State two factors that affect the properties of a polymer (Solved)

State two factors that affect the properties of a polymer

Date posted: November 6, 2019 . Answers (1)
State why C₂H₄ burns with a more smoky flame than C₂H₆ (Solved)

State why C₂H₄ burns with a more smoky flame than C₂H₆

Date posted: November 6, 2019 . Answers (1)
The structure below shows some reactions starting with ethanol. Study it and answer the questions that follow: (Solved)

The structure below shows some reactions starting with ethanol. Study it and answer the questions that follow:

(i) Write the formula of the organic compounds P and S
(ii) Name the type of reaction, the reagent(s) and condition for the reactions in the following steps :-
(I) Step I
(II) Step II
(III) Step III
(iii) Name reagent R ……………………………………………………………
(iv) Draw the structural formula of T and give its name
(v) (I) Name compound U………………………………………………………..
(II) If the relative molecular mass of U is 42000, determine the value of n (C=12, H=1)

Date posted: November 6, 2019 . Answers (1)