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Solve the following simultaneous equations: 2y = 8x + 6 // x = 3y + 7

^{First we must try to write y as a function of x, in this case it means halving the first equation so that we find that y = 4x + 3. Once we have dicovereved this. We can now write the y in our second ...}

Answered by Andrew H. • Maths tutor

2809 Views

Given the following equilibrium: H2O + H2O <-> H3O+ + OH- and the Kw = 10^-14, determine the concentration of OH- species after the addition of 1 mmol of HCl to 1 L of neutral water.

As HCl is a strong acid, it will fully dissociate in water, releasing 1 mmol of H⁺, which will be the final concentration of protons in solution. The autoprotolysis equilibrium of water (or K

Answered by Samuel N. • Chemistry tutor

1809 Views

The formula to convert from degrees Fahrenheit to degrees Celsius is C=(F-32)*(5/9). If it is 32 degrees Celsius, what is the temperature in Fahrenheit?

This question involves rearranging the equation to make F, the temperature in Fahrenheit, the subject of the formula. We'll start by writing out the original formula, and then we will move the elements of...

Answered by Sarah B. • Maths tutor

10204 Views

On what grounds have conservatives supported authority?

Authority is defined as the right to exert influence over others by virtue of an acknowledged obligation to obey. The roots of the conservative ideology lie in authoritarianism, in three ways.
First...

Answered by Isabel L. • Government and Politics tutor

2017 Views

What are the uses of the subjunctive in main clauses?

There are four uses of the subjunctive in main clauses, the jussive, exhortative, deliberative and the conditional subjunctive. The jussive is the most common reason for a main clause subjunctive and can ...

Answered by Matthew T. • Latin tutor

2847 Views