While using the Carius method for an estimation of sulphur, 0.2175 gm of the substance gave 0.5825 gm of barium sulphate. Which of the following options will be the correct percentage of sulphur in this substance?

In the chemistry lab, which of the following equipments is used to dispense and transfer the known volumes of fluids?

If the Ka value for HF is 7.2 X 10“, then what is the correct pH of 0.30 M NaF solution?

PbSOa is precipitated on mixing the aqueous solution of Na2804 and Pb2(NO3)2. If 1.25 L of 00500 M Pb2(N03)2 and 2.00 L of 0.0250 M Na2504 are mixed. then what is the mass of PbSOa formed?

What output is obtained after the given expression is simplified?

Which two roots are produced after the simplif‌ication of the given quadratic equation? 3x2 -4x + 1

A molecule with the formula ax4 uses _________ to form its bonds.

The ____ is the nuclear fusion of three helium nuclei to form a carbon nucleus.

New renewables include ________.

When a part of the body is injured, substances called ________ are released.

When 7.3 g of c3h8 burns in the presence of excess o2, __________ g of co2 is produced.