harish

it is an equation 9b- 4b+ 3b= 16 please write it step by step

addition subtraction multiplication and division

If 3.5 ml 0f N/50 AgNO3 was used in titration of chloride ion for 10 ml water sample then calculate the strength of chloride ions

an aqueous solution contains 1 mol of S2O3 ions and this reduces 4 mol chlorine molecules.What is the sulphur containing product of this reaction?

in an attempt to establish the formula of an oxide of nitrogen , a known volume of the pure gas was mixed with hydrogen and passed over a catalyst at a suitable temperature. 100% conversion of the oxide to ammonia and water was shown to have taken place....

A student wishes to measure the resistivity of glass. A teacher suggests that its resistivity is of the order of 10^6 Ω m which is very large. Resistivity ρ is defined by the equation: ρ = RA / l where R is resistance, A is cross-sectional area and l is t...

the heights of female students at a particular college are normally distributed with the mean 169 cm and standard deviation 9 cm. 1) Given that 80% of these female students have a height less than h cm ,find the value of h. 2) Given that 60% of these fema...

x ~ N(400,64) 1) Find the limits within which the central 95% of the distribution lies. 2) find the interquartile range of the distribution.

The lifetime in hours of a certain make of batteries follows a normal distribution with mean 160 and standard deviation 30. Calculate the interval, symmetrical about the mean within which 75% of the battery lifetimes lie.

Plastic articles can be chromium-plated by coating them with thin layer of graphite paste,placing them in a bath of aqueous chromium(III) sulphate and electroplating. a)Suggest a reason why the article is first coated with graphite. b)what substance could...

Crisis Management What can the government, individual and society do to combat crisis like a. Bomb blast / terrorist attack b. Earthquake c. Floods d. Fire accident.

a 150 metre long train crosses a bridge of length 250 metres in 25 seconds find its velocity

What are bio - degradable pollutant?

nh3 has high b.p. than phz give resion