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Questions and answers by
Shalom Mbaa
Questions (37)
1)solve the equation log(6x-2)-1=log(x-3)
2)evaluate without using mathematical tables,the expression 2log 5-12log 16+2 log 40
3 answers
202 views
formula of a cone
1 answer
95 views
1) a flag post 10m long is fixed on top of a towerefrom a point on horizon ground the angles of elevation of the top an bottom
1 answer
124 views
a motorist took 2 hours to travel from the one town to another and one hour 40 minutes to travel back calculate the percentage
1 answer
131 views
a bus left a petrol station at 9:20am and y traveledat an average speed of 75km/h to a town n at 9:40am a taxi traveled at an
1 answer
187 views
1) a mixed school can accomadate a maximum of 440 students the number of girls must be at least 120 while the number of boys
1 answer
150 views
solve for x 5^2x-1=12^x
3 answers
92 views
activities carried out during field study
1 answer
147 views
explain the concept of wrapping text
1 answer
98 views
what is a text wrap
1)give three ways you can text wrap text on a document
1 answer
107 views
what are non printing guides
2)give 3non printing guide as used in page marker 3)what does the term gutter mean in relation to
1 answer
189 views
use twos compliment to subtract7 from4 and give the answer in decimal notation
3 answers
98 views
subtract 0111base2 from 1001 base2
1 answer
100 views
explain binary coded decimal
1 answer
77 views
3 methods of presenting data
1 answer
98 views
work out the 8-bit binary two's compliment of the number -2base10
1 answer
108 views
convert the decimal number 19/4 into binary system
9 answers
113 views
use twos comlpiment to solve the following sums(use the numbers are in decimal notation)
1)23-20 2)17-14
1 answer
82 views
USE TWOS COMPLIMENT
10111-10001
1 answer
104 views
convert the following binary arithmetic
75+45
1 answer
92 views
convert to decimal
20.2base 16
3 answers
84 views
use binary addition
1)13base10+2base10
5 answers
115 views
use binary addition to bsolve the following decimal summations
1)4base10+3base10
1 answer
87 views
calculate the number of moles in the following molecules
1)1.2046x10^24molecules of oxygen 2)9.000345x10^23 molecules of ammonia
1 answer
145 views
what is mole
1 answer
100 views
calculate the number of atoms in the following
1)13.8g of sodium 2)0.02 moles of aluminium 3)14.2g of sodium sulphate
1 answer
131 views
find the mass of the following
1)0.003moles of magnesium 2)0.2moles of ammonia 3)0.25moles of nitric 5 acid
1 answer
106 views
calculate the number of moles in the following
1)10g of aluminium sulphate(AL=27,s=32,o=16) 2)1.06 g of sodium sulphate
1 answer
202 views
a sample of anhydrous copper 2 sulphate contains 6.54g copper 3.2g sulphur and 6.4g oxygen determine the empirical formula of
1 answer
161 views
a compound of carbon ,hydrogen and oxygen contains 54.55%carbon 9.09%hydrogen and the rest is oxygen determine the molecular
1 answer
158 views
3.22g of hydrated sodium sulphate na2so4xh2o were heated to a constant mass of 1.42g determine the value of x in the
1 answer
236 views
3.10g of an organic compound that contains carbon hydrogen and oxygen was completely burned in oxygen .in the process 4.4g of
1 answer
179 views
the empirical formula of an organic compound is c2 h4 o2 if the relative formula mass of the compound is 120 determine the
1 answer
184 views
when a hydrocarbon was completely burned in air ,5.28 g carbon 4 oxide and 2.16g of steam was produced given that the
1 answer
138 views
3.1g of an organic compound containing carbon hydrogen and oxygen only produced 4.4g of carbon 4 oxide and 2.0g water on
1 answer
129 views
a certain organic compound contains only carbon ,hydrogen and oxygen .A 4.24g sample of the compound burnt ,and gives 8.45g of
1 answer
176 views
when a hydrocarbon is completely burnt in oxygen ,11.0g of carbon 4 oxide and 4.5g of water are formed determine the molecular
1 answer
171 views
Answers (4)
thanks
why are master pages important in a publication
use ones compliment the solve the following 1)9-6 2)17-15 3)1110-1011 4)111010-110011
state one use of hexadecimal notation a computer
