Which best describes the act of using senses or tools to gather information? creating a hypothesis making an observation summarizing the results recording the measurements

Calculate the food energy (joules/ g. of one of your food samples. one chemistry calorie is equal to 4.186 joules. convert the energy you calculated to kilojoules (1 kj = 1000 j). show and label your work for your calculations.

5. You are investigating an arson scene and you find a corpse in the rubble, but you suspect that the victim did not die as a result of the fire.

When we move from the bottom to the top of the periodic table: Electronegativity increases and ionisation energy decreases Both electronegativity and ionisation energy decreases Both electronegativity and ionisation energy increases They remain the

Determine the value of Ka for a 0.550 M solution of Acetic Acid if the pH of the solution is 2.25

When sodium chloride reacts with silver nitrate, silver chloride precipitates. what mass of agcl is produced from 75.00 g of agno3?

What is a successful outcome for using a scientific method? develop a theory develop a hypothesis support a hypothesis analyze data

A ping pong ball with a mass of 2.20 grams rolls along a frictionless table with a velocity of 0.850 m/s. what is the momentum of the ping pong ball?1.87 g m/s2.59 g m/s1.59 g m/s3.04 g m/s

Elements have been discovered with up to how many energy levels

How many minutes are in 33.6 days

Select the equations that are correctly balanced. a. H2O + 2O2 → H2O2 b. Fe2O3 + 3H2 → 2Fe + 3H2O c. Al + 3Br2 → AlBr3 d. CaCO3 → CaO + CO2