micatkie

Name the following Esters.?

cos70= a) cos20 b)sin20 c)cos110 d)tan110?

Can someone please help me?! Will award 10 points, thanks!?

what happens when carbon disulphide is added to the mixture of heated iron filings and sulphur?

What is the molality (m) of a solution prepared by dissolving 125.00 g of ethylene glycol (C2H6O2) in 2.25 kg of water?

Show how 1-butyne could be synthesized from each of the following?

calculate ph of 0.225M triethylamine chloride. HOW DO I START?

Calculate the pH of a solution that is 0.178 M in sodium formate (NaHCO2) and in formic acid The Ka of formic acid is 1.77 × 10-4.?

Find three arithmetic means between 16 and 32.?

sin α = − 3/5 sec β = 5/4 for a third-quadrant angle α & a 1st-quadrant angle β, find the following. (A) sin(α + β) (A) tan(α + β)?

The factorised form of the equation x^3-2x^2-7x+5 is x(x^2-4x+1)+2(x^2-4x+1)+3. How this equation is factorised to that form?

A solution contains 2.47×10-2 M lead acetate and 2.47×10-2 M manganese(II) nitrate. (NH4)2CO3(s) is added slowly to this mixture?

why co co2 carbonates and bcarbonates are not organic?

MATH HELP ASAP?

Why carbon monooxide ,carbon dioxide and carbonates bicarbonates are not organic compound?

Trig math help please?

Chemistry, reducing agents question?

The sum of the first n positive odd integers is 64. Find n?

Name the following cycloalkane?

a flask contains NH3 (1.73×10-4 M) N2 (4.48×10-2 M) and H2 (2.63×10-2 M) What is value of equilibrium constant for reaction at 794 K?

3(x-4)+5x<70 solve?

An aqueous solution contains 167g cuso4 in 820 ml of solution. The density of solution is 1.195g/ml. Calculate molarity of solution?

the discriminant of a quadratic equation is negative. one solution is 6+2i what is the other solution?

NH3+H2O = ? decomposition right?

Trigonometry ? 2 Questions?

for the equilibrium reaction X + y <--> XY, K = .25 for the forward reaction. what is the value of K for the reverse reaction?

A ball of mass 0.315 kg that is moving with a speed of 5.9 m/s collides head-on and elastically with another ball initially at rest.?

Check if im right please? Chemistry Question Acid-Base?

substitute 3x - y = 7 2x - 2y = 2?

What is the answer to the following problems? (a) 1/4=2^x (b) 125=25^3/5^x?

A brick walkway measuring 3m by 5m is to be built. Each brick measures 20cm x 10cm. How many bricks will it take to build the walkway?

0.450 L of 0.440 M H2SO4 is mixed with 0.400 L of 0.230 M KOH. What concentration of sulfuric acid remains after neutralization?

Which of the following has six significant digits? 0.00005600 km 56.0000 km 0.00056 km 560,000 km?

what is the specific gravity of the new solution?

Chemistry help?

the number of solution to the equation |2x²-5x+3|+x-1=0 is?

Use standard reduction potentials (shown below) to calculate the potential of a nickel-cadmium cell?

What and how is fruit salt?

What volume in cm to the power of 3 is occupied by a block of wood: 35.0 m x 20.0 cm x 400 mm? P.S KINDLY ANSWER and I NEED FUTHER EXPLAIN?

Enthalpy Question?

write a balance molecular and net ionic equation for manganese with dilute sulfuric acid.?

Physics gas questions!! Need homework help!?

If an atom has a +1 net charge, meaning it is missing an electron, why doesn't it just drop a proton?

Http://i64.tinypic.com/2gxmtyf.jpg - Question 18 why is answer (b)..?

Http://i66.tinypic.com/2m7uul4.jpg - Question 10 why is the answer (d)..?

Mathematicians, I need help please read the math problem below.?

http://i64.tinypic.com/242imwz.jpg - Question 15 why is the answer (d)..?

Equilibirum question PCL5 (g) + PCl3(g) + Cl2(g) Keq = 33.3 8 mol of PCl5, 6 mol of PCl3, and 4 mol of Cl2 is added to a 2L flask.?

Http://i64.tinypic.com/xgkz0n.jpg - Question 35 why is the answer (d)..?

Which quadratic equation has solutions of x=2a and x=-b? explain A) x^2-2ab=0 B)x^2-x(b-2a)-2ab=0 C)x^2-x(b+2a)+2ab=0 D)x^2+x(b-2a)-2ab=0?