Christabel

This page lists questions and answers that were posted by visitors named Christabel.

Questions

The following questions were asked by visitors named Christabel.

calculate the initial concentration of HCOONa you would add to 0.10M HCOOH to make a buffer with a pH of 4.00 [Ka (HCOOH) = 1.8 x 10^-4]

A town y is 200km from town x in a direction 040 degree.How far is Y east of x

equal quantities of sweets at two for $10 and six for $10 are mixed together. How many of the mixed sweets can you get for $10?

If √2=147+y√3

A cylindrical tin full of engine oil has a diameter of 12cm and a height of 14cm. The oil is poured into a rectangular tin 16cm long and 11cm wide. What is the depth of the oil in the tin?

Powers of numbers less than 1 evaluate (0.6104)³

When a third number is added to 8 the result is less than 10

a uniform stick can be balanced on a knife edge 10cm from one end when a load of 200N is hung from that end . when the knife edgeis moved 5cm further from the end the 200N load has to be moved to a point 8.75cm from the knife edge to obtain balance . find...

Iist ten instruments used for measuring the following. Volume, mass, time and temperature.

As a school prefect write a short speech to be deliver on the topic causes of teenage pregnancy.

Answers

The following answers were posted by visitors named Christabel.

Calculate the area of a rhombus whole diagonals are 8cm and 16cm long

It is the method of adjusting or reducing the garments

it is the way of taking extra seam allowances

Since pH is equal to _logbase10 (H +) We have 3.4 =_log(h+) There4 log [h+]=-3.4=-4.0+0.6=4.6 There4 [H+]= anti log 4.6 = 4*10^4 mol dm^-3

E .A.A u made a mistake in solving, check ( 2.5*10^-4)^2 You got 6.25* 10-8 Is suppose to be 6.25*10^-16 And the final answer is = 3.93*10^-7

Thanks for the work

which of the questions. Please

What is question all about. Please

Please help me solve this:ade and adewale shared a sum of 2400.00 in the ratio 2:3. How much does adewale get

Me to ,please help

41-7=34 .Complete it

Please i need a answer

20cm×100000=200000cm Convert into meters 200000/1000(3 decimal place to the left)=200m Convert into kilometer 200/100(2 decimal place to the left)=2km

Have no idea that why am asking for help