Search our library of homework questions

Top answers

All subjects

All levels

What case should be used where in a sentence?

German, unlike many other languages, has 4 cases (nominative, accusative, dative, and genitive), each with their own version of the article (der, die, das, dem, den etc)... but what fits where? There are ...

Answered by Amy R. • German tutor

1428 Views

State an explain the result of an increase in temperature on the following equilibria: N2 (g) + 02 (g) <-> 2 NO (g) (delta H = +180kJmol-1)

An increase temperature favours the endothermic direction of an equilibrium reaction; this is because there is more energy in the surroundings to accommodate for the energy that will be taken into the sys...

Answered by Samuel G. • Chemistry tutor

2045 Views

How do you work out the limiting reagent in a reaction?

The limiting reagent is the chemical substance that isn't in excess in the reaction compared to the other components. The way to calculate which reagent limits the reaction and how it progresses is to cal...

Answered by Fiona S. • Chemistry tutor

1270 Views

15 machines work at the same rate. Together, the 15 machines can complete an order in 8 hours. 3 of the machines break down after working for 6 hours. The other machines carry on working until the order is complete. In total, how many hours does EACH

The total number of 'machine hours' needed to complete an order is (15x8) = 120 hoursThe total number of hours worked by the broken machines = (6x3) = 18 hoursTherefore the total number of machine hours n...

Answered by Ethan R. • Maths tutor

5176 Views