An unknown substance has a mass of 19.1 g. when the substance absorbs 1.719*102 j of heat, the temperature of the substance is raised from 25.0 ∘c to 45.0 ∘c. what is the most likely identity of the substance?

A block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. it has a mass of 213 g. when placed in water, the block sinks. what volume of water did it displace? a. 27.0 cm3 b. 213 cm3 c. 7.89 cm3 d. 0.127 cm3

A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and water by filtration or centrifuge. What type of mixture is it?

How to calculate molar absorptivity without concentration

What is the measure of how quickly the velocity of an object changes

A balloon is at rest (not moving or changing) on a day when the barometric pressure is 758 mm Hg. What must the pressure inside the balloon be in atm?

How is shielding effect related to atomic radius?

Nyatakan tiga aktiviti kerja yang melibatkan proses pengurusan projek reka bentuk.

Which technology works in conjunction with electronic collars to enable scientists to track endangered animals?

In an experiment, having too many variables A might solve the problem faster B could solve more than one problem C will cause too many problems D will not matter

The activation energy decreases with increase in temperature. why?