When 21.6 g of carbon were burned in the presence of 73.7 g of oxygen, 16.1 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

Which of the following always occurs in a chemical reaction? A) a gas is given off. B) a solid is produced, C) a new substance is produced. D) a colour change takes place.

In chemistry to be classified as an organic substance a substance must contain?

What is observed when a solution of potassium iodide is added to silver nitrate solution? a) No reaction takes place (b) White precipitate of silver iodide is formed (c) yellow precipitate of Agl is formed (d) Agl is soluble in water.

Choose all of the following that have at least 1 polyatomic ion in the compound calcium hydroxide Na3P lithium phosphate ammonium sulfide AgNO3 SrO

Two body systems that are affected by broken bone

You are measuring the mass of various shapes objecys and identifying their shaped ypu then record the qualitative and quanatitave data in a table is qualitataive wnd which is quatitaive

A positively charged wire is attracted to a negatively charged piece of metal. What force causes this?

Two identical atoms from Area B bond together. What type of bond will they most likely form A. Electrostatic B. Metallic C. Ionic D. Covalent

Which would be the best way to represent the concentration of a 1.75 M K2CrO4 solution? 1.75% K2CrO4 [K2CrO4] (K2CrO4) K2CrO4, [M] = 1.75

Consider the reaction C12H22O11 (s) + 12O2 (g) →12CO2 (g) + 11H2O (l) in which 10.0 g of sucrose, C12H22O11, was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/∘C. The temperature increase inside the calorimeter was found to be 22.0 ∘C.