What are the properties of gases? No fixed shape and fixed volume No fixed shape and volume Fixed shape and fixed volume Fixed shape and no fixed volume
A student uses 0.507 kilograms of lead (II)fluorosilicate, PbSiF_(6) to make a 3.75L solution of aqueous lead (I) fluorosilicate . Determine the concentration . of the solution . Round your answer to three significant figures. Include the unit in your answer. Answer: square
Which of the following correctly describes the formula weight of a compound? The sum of the atomic numbers in the compound The sum of the charges of the ions in a compound The number of formula units in a sample of a compound The sum of the atomic masses of all the elements in one formula unit compound
Explain what characteristics of metalloids are more like metals and which are more like nonmetals based on the research you conducted Edit View Insert Format Tools Table
__ 9. Which combination of protons and electrons would have a negative 3 charge? A. 15 protons and 18 electrons B. 18 protons and 15 electrons C. 26 protons and 23 electrons D. 25 protons and 26 electrons E. 10 protons and 10 electrons
Calculate the molar mass of N_(2)S_(3) Round your answer to the hundredths place. square (g)/(mol) of N_(2)S_(3)
The kinetic molecular theory of gases suggests that gas particles exert __ attractive or repulsive forces on each other. square
Calculate the molar mass of P_(2)S_(3) Round your answer to the hundredths place. square (g)/(mol) of P_(2)S_(3)
Atoms are spherical in shape. Therefore, the Mg atoms in the cube cannot fill all the available space. If only 74.0 percent of the space inside the cube is taken up by Mg atoms, calculate the radius in picometers of an Mg atom. square pm
A chemical reaction releases 55.2 kcal. How many kilojoules does this correspond to? Multiple Choice 231 kJ 0.231 kJ 13.2kJ 1,320 kJ None of the choices are correct
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.
