When is a hypothesis useful in science?

Is boron nitride a compound element or mixture?

Examine the equation of a reversible reaction. 2SO2 + O2 ⇌ 2SO3 Which of the answer choices correctly lists the reverse reaction? 2SO2 + 2SO3 → O2 2SO3 + 2SO2 → O2 2SO3 + O2 → 2SO2 2SO2 + O2 → 2SO3

A thermometer is placed in water in order to measure the water's temperature. What would cause the liquid in the thermometer to rise?

7. Why does a higher temperature cause a reaction to go faster? Either there are more collisions per second or the collisions are of greater energy. There are more collisions per second and the collisions are of greater energy.

When burning petrol in motor vehicles two gases form which contribute to acid rain. what are the two gases?

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

Carbon monoxide reacts with oxygen to form carbon dioxide. 2 CO (g) + O2 (g) → 2C02 (8) In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask? 4.30 atm 2.

The nerves that Branch out from the spinal cord and connect to the body

The term southern oscillation most nearly refers to

Which kelvin temperature is equivalent to 20°C