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1)What is evidence of the chemical reaction between nickel and sodium phoshate

2)what is the evidence of the chemical rxn between barium chloride and sodium chloride

Express conc. of 0.05g of sodium carbonate(Na2Co3) per 300ml of solution in PPM.

The % by mass of comp of cryolite a cpd used in the production of aluminium is as follows: Na=32.79%, Al=13.03%, Fl=54.19%. what is the formular of the cpd?

i will really appreciate your help.

pls i really need ur help, thanks

i will give 10 awesome points to the first person that answers all correctly and pls solve anyone you can, i will really appreciate it and don't forget to show all working.

a) An airplane has a total number of 152 seats. the number of coach-class seats is 5 more than six times the number of first-class seats. how many of each type of seat ate there on the plane.

b)stella's catering is planning a wedding reception. the bride and groom would like to serve a nut mixture containing 25% peanuts. stella has available mixtures that are either 40% or 10% peanuts. how much of each type should be mixed to get 10Lb mixture that is 25% peanuts?

c) Two planes travel toward each other from cities that are 780km apart at rates of 190km/h and 200km/hr. they started at the same time. in how many hours will they meet?

supplementary angles are angles whose sum is 180. Two supplementary angles are such that one angle is 12 less than three times the other. Find the measures of the angles.

As for me, obama rocks.

The stopping distance d of a car after the brakes have been applied varies directly as the square of the speed r. if the car travelling 60mph cab stop in 200ft, how fast can a car travel and still stop in 72ft.

Thanks for you help, i will surely give the best answer extra points for the hard work and pls show all working.

A long distance trucker traveled 120 miles in one direction during a snow storm. the return trip in rainy weather was accomplished at double the speed and took 3 hrs less time. find the going speed.

add/ simplify if possible. and also show all workings pls.

a)6 + 4x over (x - y)+ (y^2 - x^2)

b)2 over 1 - a-2 over a+3 = a^2- 4 over a+3.

thank you for your help i will give you 10 extra points.

solve a) 2x +7 over x - 6 + 3x over 6 - x

b) 2 over 1 minus a-2 all over a+3 = a raise to the power 2 minus 4 all over a+ 3.

pls show all working and thank you for trying.i will definitely give you extra points. thank u.

Add and simplify if possible

a)2x +7 over x-6 plus 3x over 6-x

b)6 over x - y plus 4x over y2-x2

c) find the lcm of 2(y-3),6(y-3).

Thank you, i will surely give you extra points for trying.

find the L.c.m of

(a) 2(y-3), 6(y-3)

(b) t . t . t + 4t .t + 4t, t . t - 4t

(c) a +1, (a -1)(a-1), (a+1)(a-1).

toni can be paid in one of two ways

plan A; A salary of $400 per month plus a commision of 8% of gross sales;

plan B; A salary of $610 per month, plus a commission of 5% of gross sales.

for what amount of gross sales should toni select plan A?

The hudson bank offers two checking account plans. Their anywhere plan charges 20cents per check whereas their acu checking plan costs $2 per month plus 12cents per check. for what numbers of checks per month will the acu checking plan cost less?

and this one too:

The equation y= 14.57x + 62.91 can be used to predict the number y of online shoppers, in million, x years after 2000. for what years will the number of online shoppers be betwen 106,620,000 and 194,040,000?

can someone pls help me with this

19-(2x+3)= 2(x+3)+x and

2[4-2(3-x)]-1 = 4[2(4x-3)+7]-25

i will give you 10 awesome points if you get it right.

A scientist has just created a clone that looks and acts so much like you so that people won't be able to tell you apart. but their is one way in which you are unique. based on this personality trait, ur friends will be able to recognize you immediately, what is this personality trait that is so instantly recognizable to those who specially know you?

A scientist has just created a clone that looks and acts so much like you so that people won't be able to tell you apart. but their is one way in which you are unique. based on this personality trait, ur friends will be able to recognize you immediately, what is this personality trait that is so instantly recognizable to those who specially know you?

hunting, spray cans, mountain climbing, and skiing. At the same time, they greatly underestimate the risks of such hazards as x-rays, swimming, electric power, home appliances, and surgery. why should this be?

hunting,spray cans, mountain climbing, and skiing. At the same time, they greatly underestimate the risk of hazards as x-rays, swimming, electric power, home appliances, and surgery. Why should this be so?