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A student wanted to make 10.0 g of zinc chloride. The equation for the reaction is: ZnO(aq) + 2HCl(aq) → ZnCl2(aq) + H2O(l) Calculate the mass of zinc oxide the student needs to react with the dilute acid to make 10.0 g of zinc chloride. [4 marks]

What do we know from the question? 1. we know the balanced equation 2. we know the mass of zinc chloride we want to form. using the equation number of moles = mass/Mr we can calculate the number of moles ...

Answered by Arun S. • Chemistry tutor

8370 Views

How do I sketch a function from its equation without using my graphical calculator?

When sketching a graph there are some important points to consider - if you can pinpoint these special places on your graph, you will be able to sketch the whole shape of the graph.
Intercepts - the...

Answered by • PAT tutor

1556 Views

Explore the ways in which the individual's relationship with God is presented in 'Redemption' by George Herbert and 'Batter my heart' by John Donne.

While both poems support the more loving and compassionate God of the New Testament, Donne's portrayal of the individual's relationship with God retains a violence that is conspicuously absent in Herbert'...

Answered by Yii-Jen D. • English Literature tutor

5878 Views

How to do Indices?

There are different rules when it comes to indices. First of all we will look at the example of multiplying two expressions . For example, y² x y⁴ . Here we need to do the addition r...

Answered by Taha H. • Maths tutor

3814 Views

Can you explain the three different types of long term memory.

The long term memory can be separated into episodic, semantic and procedural memory. Each of these different types of memory has unique characteristics. The episodic memory is related to personal experien...

Answered by • Psychology tutor

3506 Views