10) Select 2 that apply. How does carbon dissolve into water? carbonic acids solid carbon charcoal gaseous carbon dioxide diamond form
True or False: Both elements and compounds are found on the periodic table. True False
4. Explain what happens to each of the following as the atomic masses of the elements in the periodic table increase: a. the number of protons __ b. the number of electrons __ c. the number of atoms in 1 mol of each element
A reaction between an acid and a base forms what products? Water Salt Salt and Water A covalent compound
What is the most stable ion formed by phosphorous? -1 +3 -3 -2
4. Explain why the lattice energy-the amount of energy necessary to break apart the lattice-of MgCl_(2) is greater than the lattice energy of NaCl. Coulomb's low which you may use in your answer, is F_(c)=k(q_(1)q_(2))/(r^2)
A Pure substance is made of one type of particles. Is B2 a pure substance? Explain Escriba su respuesta
What is the subunit of a polymer?
Which of the following is a heterogeneous mixture? Table Salt Oil and vinegar salad dressing Table sugar Baking soda
A student attempts to draw the electron configuration of an atom that has 7 electrons using orbital notation. Is the diagram correct or incorrect? square Which rule is violated? square
What is the major ion in seawater? sodium chloride magnesium sulfate
5. How can 100. mL of sodium hydroxide solution with a pH of 13.00 be converted to a sodium hydroxide solution with a pH of 12.00 ? (A) By diluting the solution with distilled water to a total volume of 200 mL (B) By diluting the solution with distilled water to a total volume of 1.00 L (C) By adding 100 mL of 0.10 MHCI (D) By adding 100 mL of 0.10 MNaOH
12. How does the concept of electron transfer explain why sodium and chlorine react to produce sodium chloride?(Hint: Think about the movement of electrons between sodium and chlorine atoms during the reaction.)
2. Use Passage 1 to answer question below. Suppose that in Experiment 2 a solution at a pH of 7.5 had been tested. Based on the results of Experiment 2, the percent recovery of cadmium for that solution would most likely have been: F. between $48\% $ and $80\% $ G. between $80\% $ and $88\% $ H. between $88\% $ and $95\% $ J. between $95\% $ and $100\% $ F G. H. J.
1.Use Passage 1 to answer question below. Based on the description of Experiment 1, when was the graphene separated from the sample liquid by centrifugation? A. Immediately before placing the sample in the water bath B. Immediately after removing the sample from the water bath C. Immediately before the percent recovery of the cadmium was determined D. Immediately after the percent recovery of the cad- mium was determined A B C D
Which statement about asbestos fibers is correct? A. All asbestos fibers are visible without magnification B. Asbestos fibers can be identified by color and texture alone C. Some asbestos fibers are extremely small and require laboratory testing to confirm their presence D. Asbestos fibers are always thicker than a human hair
Which of the following statements describes how water differs greatly from many other substances? It is less dense in its solid form than liquid form. It is a polar covalent molecule. It can change to solid liquid and gas phases. It is comprised of two different elements.
Name the following ionic compounds. Make sure you are in text mode $(''Tt'')$ Do NOT put a space between metal and charge in parentheses if naming a Type II metal ionic compound (i.e. iron(III)) a. $CoCl_{2}$ $\square $
3. How many grams of $Fe_{2}(SO_{4})_{3}$ will be produced from 4.25 moles of Fe? $2Fe+3H_{2}SO_{4}\rightarrow 1Fe_{2}(SO_{4})_{3}+3H_{2}$
Red litmus paper turning blue indicates the prescence of __ ? $Ni(II)$ $Ca(II)$ $Fe(III)$ Ammonium Ion
