Top answers

All subjects
A Level

A curve has the equation (5-4x)/(1+x)

Start by looking for intercepts.x=0, y= 5. Therefore the curve crosses the y axis at y=5y=0, x= 5/4these are the only two intercepts. Now look for asymptotes.3. at x= 1, y becomes undefined, looking at ei...

HH
2121 Views

When 80.0cm^3 of 0.500 M hydrochloric acid was added to 1.75g of impure CaCO3, not all HCl reacts. The unreacted HCl required 22.4 cm^3 of a 0.500 M solution of NaOH for complete reaction. Calculate percentage by mass of CaCO3 in the impure sample.

Balanced equations: CaCO3 + 2 HCl --> CaCl2 + H2O + CO2 , HCl + NaOH --> NaCl + H2O
HCl moles that react overall: (80.0 cm3 x ...

Answered by Chemistry tutor
1987 Views

What is the difference in the evaluation of a study versus a theory?

When evaluating studies, you are assessing how useful the findings of the studies are in explaining the key question within the topic. Therefore, all evaluation points need to refe...

JO
Answered by Junior O. Psychology tutor
5477 Views

What's the moment of a force and why would I need to understand it?

Mathematically you'd express it as M=F x d, Moment = Force times distance (from the pivot), unit being Nm, Newtons times meters. Simply speaking, it's how you quantify an object's ability to rotate around...

Answered by Physics tutor
1778 Views

'The Weimar constitution of 1919 was no more democratic than the Bismarckian constitution of 1871.' Discuss

Interesting question inviting you to compare, contrast and evaluate. Consider what the question is asking you to do - ultimately it wants you to evaluate how 'democratic' the two German constitutions were...

AH
Answered by Anna H. History tutor
3954 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning