Search results

I need help with these 2 mole questions from the person book. Find the relative atomic mass of nickel if 3.370g nickel was obtained by reduction of 4.286g of the oxide (NiO). You may need to refer to the periodic table at the end of this book. 16 4.150g tungsten was burned in chlorine and...

A bunch of flowers is formed using single flowers from five different types: daffodils, tulips, roses, lilies, and petunias. What is the minimum number of flowers in a bunch required to ensure that it contains at least four flowers of any one type? The answer is 16, but I got 21. Not too sure...

If a function has a stationary point at (−1, 2) and f ″(x) = 2x − 4, find f(2). Pls Help!

The amount M of certain medicine present in the blood after t hours is given by M = 9t^2 -t^3 for 0 < t < 9. When is the amount of medicine in the blood increasing most rapidly? How do I do this? The answer is t=3. I got it from Baulkham hills past paper.

How do I solve this. Help!!!

I need help with these questions, I'm so confused :( 1. The diagram shows a 6 × 4 grid. The aim is to walk from the point A in the top left-hand corner to the point B in the bottom right-hand corner by walking along the black lines either downwards or to the right. A single move is defined as...