A __ is two different elements which bind together. A Mixture B Compound C Solution D Nucleus
A certain compound is made up of two bromine atoms, one nitrogen atom, and one chlorine atom. What is the chemical fo formula of this compound? Express your answer as a chemical formula.
How many moles of carbon dioxide are contained I in 237 L at STP? () mol
Which type of compound contains triple bonds? covalent ionic
Which of these factors will NOT decrease the solubility of gases in solution? a decrease in the partial pressure of that gas an increase in temperature an increase in ionic concentration All three factors will decrease the solubility of a gas in solution.
Three of the phase changes below are endothermic Which phase change is NOT endothermic? Multiple Choice vaporization sublimation condensation melting
How many molecules are in 2.41 grams of KOH?
Calculate the volume of 86mu g of a gas whose density is 1.225times 10^-3g/mL Express your answer in milliliters using the correct number of significant figures. Do not enter your answer using scientific notation. Volume=square mL
Three of the phose changes below are endothermic. Which phase change is NOT endothermic? Multiple Choice vaporization sublimation condensation melting
How many moles of Na_(2)CO_(3) are needed to react with 750 mL of 0.250 M H_(2)SO_(4) solution? Na_(2)CO_(3)+H_(2)SO_(4)arrow Na_(2)SO_(4)+CO_(2)+H_(2)O 3.00times 10^3 0.333 1.33 0.188
An element cannot be broken down by chemical means. True False
Why is vaporization classified as a phase change? It forms ash Identity changes It is reversible and involves state change It forms new compounds
Which of the following statements about a catalyst is true? A catalyst accelerates a reaction by lowering the energy of activation. A catalyst accelerates a reaction by raising the energy of activation. A catalyst accelerates a reaction by changing the amount of reactant and product at equilibrium. A catalyst accelerates a reaction by lowering the equilibrium constant.
The compound $2,4,6$ trimethylheptane has how many chiral centers? o 3 1 4
Complete the atomic orbital diagram for the ground-state electronic configuration of phosphorus. $\square $ $\square $ $\square $ $\square $ $\square $ $\square $ $\square $ $\square $ $\square $
13. Base your answer to the following question on the balanced equation below. $2Na(s)+Cl_{2}\rightarrow 2NaCl(s)$ Explain, in terms of electrons, why the bonding in NaCl is ionic.
Which of the following types of compounds can form hydrogen bonds with itself? Alcohols ethers alkenes
Mixtures can be separated by physical changes. Please select the best answer from the choices provided T F
Which among the following is a chemical change? Reactivity Melting Cutting Freezing
Part F $CH_{3}CH_{2}CHCl\\ \downarrow \\ CH_{3}$ Spell out the full name of the compound.
