Plss solve ques no. ix. Plss by reading above ques
Answers
Answer:
given, pair of equation. (2a-1)×-3y=5,3×+(b-2)y= 3
Step-by-step explanation:
on comparing the given equation with standard form i.e. a1 × b1 y × c1 = 0 and a2 × + b2 y + c2 = 0. we get,
a1 =( 2a - 1), b1 = - 3 and c21 = -5
and a2 = 3, b2 = b- 2 and c2 = 3.
z
Well, you need to know the atomic weight of Platinum (Pt) and the number of atoms per mole. The answer to the former is 195.084 g/mole and the latter is 6.023 * 10^23 atoms/mole. Then, multiply everything as shown below:
Number of atoms = (1 g) * (1/195.084 g/mole) * 6.023 * 10^23 atoms/mole
Number of atoms = 3.087 * 10^21 atoms
Note, I’ve included units on everything and you can see that they all cancel except for atoms. Dragging the units along can be a pain but it is a great way to check that they way the numbers are being combined is