Chemistry

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If a more active element replaces a less active one in a compound, the reaction is:

If a single reactant is transformed by heat or electricity into two or more products, the type of reaction is

If the volume of the mole of gas molecules remains constant, lowering the temperature will make the pressure

The element which has a mass of about 9 amu is Berylium (Be), atomic number 4. What is the charge on the Be atom?

Three grams of sulphur dissolved in 200 g of naphthalene C10H8, was found decreasing the freezing point of the solvent to 0.72 ⁰C. Find the molecular weight of the solute. (Kf C10H8 = 6.9 ⁰C/molar)

An example of a ternary compound is

How many moles of are present in 44.8L of at STP?

A device used to measure density

Which of the following does not change with change in temperature?

These are compounds containing water molecules loosely bound to the other components

It is a product of the weathering of complex silicates, particularly of feldspars which are abundant minerals

Whenever you have equal volumes of gases at the same temperature and pressure, the volume must

It refers to matter that do not have definite form or structure

Any process extracting the metal in a fused state is called

When the same elements can form two different two compounds, the ratio of masses of one of the elements in the two compounds is a small whole number relative to a given mass of the other element. This is known as:

The amount of energy needed to change a given mass of ice to water at constant temperature is called the heat of

What pressure must be applied to 225mL of gas at 1atm to reduce its volume to 100mL?

It is considered as derivatives of ammonia in which one or more of the hydrogens have been replaced by the alkyl or aryl group. It is characterized by unpleasant odors

If heat is absorbed by the system during a chemical change, it is called as

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