A piece of candy is burned in a calorimeter raising up the tempature of 500g of water from 21 C to 25 C water has a specific heat of 4.18J/g C how much energy was released by the candy

A student has a sample of a mineral that is too big to fit in a graduated cylinder. The density of the sample is known. How can the student determine the volume of the sample?

All seedless plants are vascular. T or F

A sample of hydrogen (H2) gas is collected over water at 35oC and 725 mm. The volume of the gas collected is 72.0 ml. How many moles of H2 gas has been collected? How many grams of H2 gas has been collected?

According to newtons first law of motion an object at rest tends to stay at rest unless what?

Which statement must be true for any chemical reaction at equilibrium? (1) The concentration of the products is greater than the concentration of the reactants. (2) The concentration of the products is less than the concentration of the reactants.

Student follow up The ionic equation for the reaction between zinc and sulfuric acid is. Zn (s) + 2H (aq) - - Zn" (aq) + H2 (g) a State what has been oxidised in this reaction. Explain your answer in terms of electrons.

What is required for reactants to form bonds? energy output energy input equilibrium exchange reaction

Check out the list of scientific names. These names all represent animals. These are all animals but they cannot reproduce to produce fertile offspring with each other.

Within temperatures allowable for growth, higher temperatures usually lead to Choose one: A. The effect depends on the species. B. no effect on growth rates. C. higher growth rates. D. slower growth rates.

Does toxicity happen with high or low nutrient concentration?