Question
How many significant figures are present in :
126,000

Answer

3

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Similar questions

Chlorine is prepared in the laboratory by treating manganese dioxide $\left( M n O _{ 2 }\right)$ with aqueous hydrochloric acid according to the reaction
$\begin{array}{r}4 HCl ( aq )+ MnO _2(s) \rightarrow 2 H _2 O ( l )+ MnCl _2( aq ) + Cl _2(g)\end{array}$
How many grams of HCl react with 5.0 g of manganese dioxide?
Define oxidation and reduction according to electronic concept.
Which element do you think would have been named by:
Lawrence Berkeley Laboratory.
In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

  1. Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  2. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  3. Assertion is true but Reason is false.
  4. Both Assertion and Reason are false.

Assertion: An isolated system is the one which can neither exchange matter nor energy with the surroundings.

Reason: It should be noted that every system is perfectly isolated.

If concentration of $A$ and $B$ are doubled in reaction $A +2 B \rightleftharpoons 2 C$ then how much velocity of forward reaction increases?
Write the relation between enthalpy change (AH) and change in internal energy (AV)?
Give general electronic configuration of least reactive group. Why are they least reactive?
Write the equilibrium constant expression for following reaction:
$2\text{NOCl}(\text{g})\rightleftharpoons2\text{NO(g)}+\text{Cl}_2(\text{g})$
Choose the correct answer.
The enthalpies of all elements in their standard states are:
  1. Unity
  2. Zero
  3. < 0
  4. Different for each element.
What is the total number of sigma and pi bonds in the following molecules?

C2H4