Other Chemistry Answers

Find the mass of a silicon sample that's temperature increased by 29 ^oC when 382 J of heat were applied

s_Si = .71 J/g^oC

With a mixture of potassium and strontium, what would be the color of this mixture when tested in flame?

Find the amount of energy required to raise the temperature of 9.19 g silicon from 18 ^oC to 58 ^oC

s_Si = .71 J/g^oC

With a mixture of potassium and barium, what would be the color of this mixture when tested in flame?

.          A 50.0-mL sample of gas is cooled from 119°C to 80.0°C. If the pressure remains constant, what is the final volume of the gas?

A natural gas tank is constructed so that the pressure remains constant. On a hot day when the temperature was 33°C, the volume of gas in the tank was determined to be 3000.0 L. What would the volume be on a warm day when the temperature is 11°C?

Magnesium hydroxide and hydrogen sulfate react to form magnesium sulfate and water.

Finding equation

It requires two sticks of butter to make a batch of 20 cookies. How much butter will it take to make 150 cookies?

Soil samples were collected from different land use areas. When these samples were assessed, then the corresponding major contaminants were found as shown in the table,

Soil sample Major contaminants Land Use

А Metallic residues, Commercial

plastic, thermocol

B DDT, endosulfan, nitrates, Agriculture

animal manure, fertilizers

and biosolids (sewages sludge), urea

C Plastic, glass, human excreta, Residential

organic contaminants from

food, poultry farms

D Heavy metals like Industrial

mercury, cadmium

Based on the above table, suggest the possible soil management methods for the soil sample B and D; compare the soil sample A and D in terms of their potency to contaminate underground or surface water; and discuss the impact of contaminants in soil sample B on agricultural productivity and human health

Which molecule has 6 shared electrons