What is an experiment that can verify that new substances are formed and heat is released or absorbed during a chemcal reaction?

What would a solution with a pOH value of 9 be categorized as? Neutral Base Toxic Acid

Biochemistry is focused on four biological molecules: proteins, carbohydrates, nucleic acids, and lipids. Which can function as polymers? a. All are polymers. b. carbohydrates and proteins c. nucleic acids d.

The amount of heat needed to raise one gram of a substance 1° Celsius is called

Which country from a table would most likely have the highest level of education (on average) and the greatest delay in marriage (on average) for its citizens A) country a B) country b C) country c D) country d It's d) country d

How many orbitals are in the 3s subshell?

At 25.0 degrees Celsius, one milliliter of mercury has a mass of 13.6g. How many liters of mercury are required to have a mass of 500 Kg of mercury?

Propane (C3 H8 (g), Hf = - 103.8 kJ/mol) reacts with oxygen to produce carbon dioxide (CO2, Hf = - 393.5 kJ/mol) and water (H2 O, Hf = - 241.82 kJ/mol) according to the equation below. What is the enthalpy of combustion (per mole) of C3 H8 (g) ? Use.

How many gold atoms would have to be lined up to span 6.5mm

Determine how many grams of co2 are produced by burning 4.37 g of c4h10.

Which of the following expressions is equivalent to 7x + 9y - 6 - 3y + 4? A 7x + 4y B 11xy C 7x + 6y - 2 D. 7X+4