May 15, 2017 · 36 neutrons. One way we have of differentiating between various nuclides of the same element is by writing the name of the element followed by a hyphen and the mass number of the …

Nov 29, 2016 · Hydroxide ion concentration is low, because this is an acidic solution.

see a solution process below; The equation of reaction is; 2C_2H_6 + 7O_2 -> 4CO_2 + 6H_2O No of moles of C_2H_6 = 2 No of moles of CO_2 = 4 If, 2 "moles of" color (white)x C_2H_6 = 4 "moles of" …

May 7, 2017 · The needed volume is 0.119 L To calculate the volume we use the following formula: (mol)/(volume) =concentration We know that the final concentration should be 0.156 molar (or mol/L) …

See below. First, we need to write the balanced chemical reaction. This will tell us the mole ratio of magnesium metal to hydrogen gas (used in calculation): 3Mg(s) + 2H_3PO_4(aq) -> …

Now for the tricky part. When chemists report an elemental analysis and it adds up to less than 100%, the difference is generally attributed to oxygen. Our analytical methods, constrained by working in an …

Explanation: I tried rationalizing the numerator, but it got quite involved.

15 pieces of ribbon can be cut. 1m = 100cm You could do this by subtracting 6.5 " from " 100 until you get close to 0 and count how many times you subtracted. However, division is the short cut for …

2sqrt(3)cos(theta + pi/3) The general form is a*cos(theta)-b*sin(theta) = R*cos(theta+alpha), where R = sqrt(a^2+b^2) and alpha=tan^-1(b/a). First calculate R = sqrt ...

See explanation. Let's solve A first. 10^-1 is the same as 0.1, so 0.1*60.7 would be equal to 6.07. For solving B. 10^2=100 and 6.7*100=670. For solving C. 10^3=10^2* ...