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How do I expand single brackets?

tt the brafckTo expand any brackets, simple or double the golden rule to remember is you must multiply everything inside the bracket by everything outside the bracket. Let's run through some examples:2(x+1)=...
TD
Answered by Tutor122756 D. • Maths tutor
3523 Views

Given the reaction: H2SO4 + NaOH --> ? + H2O. (a). Work out the salt produced (?) and (b). calculate the pH of the remaining solution when 1.2 g of NaOH and 4.41 g of H2SO4 were added in a 500 ml solution. Of the unreacted H2SO4 95% dissociated.

(a). Firstly, to work out the product, take 2Na + + SO 2 - --> 2 Na 2 SO 4 . (b). To calculate the pH, the equation: pH = -log 10 ([H + ]) must be used. Therefore we need to find the concentration of hydr...
DW
Answered by Dan W. • Chemistry tutor
6735 Views

Explain the difference between constructive and destructive plate boundaries?

Overall, there are 4 types of plate boundaries, with constructive and destructive being opposites. A constructive plate boundary is where two plates are slowly moving away from each other, allowing for magma...
CS
12931 Views

What is the main government objectives to maximize economic growth?

There are many government objectives that maximize economic growth. Most common ones are Fiscal Policy, Monetary policy and supply side policy. Fiscal Policy is the decisions made by the government on spendi...
GE
Answered by Gokhan E. • Economics tutor
5659 Views

Is the function f(x)=x^3+24x+3 an increasing or decreasing function?

f(x)=x^3 +24x+3 f'(x)=3x2+24 Since x^2>0 for all real x 3x^2+24>0 So f(x) is an increasing function
DM
Answered by Danni M. • Maths tutor
4731 Views