Top answers

Calculate: (a) The amount, in mol, of white phosphorus used, (b) the limiting reagent, (c) the excess amount, in mol, of the other reagent.

P 4 (s) + 3OH - (aq) + 3H 2 O(l) ---> PH 3 (g) + 3H 2 PO 2 - (aq) Provided for answering (a): Mass of white phosphorus: 2.478g Provided for answering (b): Volume of aqueous sodium hydroxide: 100cm 3 Conce...
LO
Answered by Lisajo O. • Chemistry tutor
7296 Views

What is the difference between consumer surplus and producer surplus, and what significance do these two concepts have on the free market?

Consumer surplus is the difference between the price a consumer is willing to pay for a good, and the actual price of that good. Producer surplus is the difference between the price a producer is willing to ...
JL
Answered by Jon L. • Economics tutor
4945 Views

What is a binary tree? What is the time efficiency when searching a balanced binary tree of size n nodes and why? What is the advantage of using a binary tree rather than an ordinary list?

A binary tree is a special type of tree with one source node (no parents) and each node has a maximum of two child nodesEach node stores a valueUsed to store sorted numerical dataTime efficiency is O(logn)Th...
JR
2566 Views

Express 9^3x + 1 in the form3^y ?

In these types of question, you need to find out how the integer relates to the new integer - it will be by integrals. We can see that 9 is just 3 x 3 which is 3^2. Thus we now have 3^2(3x +1). As we know fr...
PM
Answered by Polly M. • Maths tutor
4400 Views

Explain the key differences between Von Neumann and Harvard CPU architectures.

Von Neumann used for more general purpose applications (i.e. personal computers, phones etc)Harvard architecture used for embedded systems (i.e. cockpit controls, GPS devices)Von Neumann architecture Stores ...
JR
3681 Views