Chemistry

Consider the equation and check all statements that apply to it: HA H+ + A(Select Apply Question) A. It represents a strong acid buffer system.B. It represents a weak acid buffer system.C. Adding a strong acid would shift the equilibrium to the leftD. Adding a strong acid would shift the equilibrium to the right
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suppose that you measured out 3.50g of Na2SO4. how many moles would you have? (show work)
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A solution has a hydroxide-ion concentration of 1.5 x 10^-5M. (a) What is the concentration of the hydronium ions in this solution? (b) What is the pH of this solution? (c) Is the solution acidic, basic, or neutral?
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Explain why the upper phase, after reflux, contained the 1-bromopentane, even though its expected density is 1.276 g/cm3, and the density of water is ~1.00 g/cm3. Think what is in the aqueous solution (e.g., what is the density of salt water
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PLEASE Answer asap! Which has the largest atomic radius? A. LithiumB. HeliumC. OganessonD. Francium?
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At what pressure, in atm, will 1.8 mol O occupy a volume of 56.0 L at 35C? Round your answer to the nearest hundredths. Don't forget to label your units.
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Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemicalequation:(( H20-( H2+( 02
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3) What is the mass of 1 mole of selenium (Se)?
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The theoretical yield of ammonia in a reaction is 865 g. What is the percentyield if 657 g is produced?A- 38.0%B- 132%C- 152%D- 76%
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How many moles are in 2.5 g of N2?0.089 moles0.18 moles1.3 molesO11 moles
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first American president
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In an ocean wave, what happens to a water molecule after it transfers its kinetic energy to another water molecule?
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What causes competition?
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PLEASE NO LINKS OR FILE SCAMS what is the balanced equation for CuSO4+ 2NaOH Cu(OH)2+ Na2SO4 I just want the answer please help
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How many formula units are there in 1.34 moles of Lithium Bromide (LiBr)? (write your answer in scientific notation).
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A human hair is 75 um across. How many inches is this?
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Acid formulas usually start with ______________ because they have hydrogen atoms combined with other atoms in their molecules
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A 3.4 g sample of an unknown monoprotic organic acid composed of C,H, and O is burned in air to produce 8.58 grams of carbon dioxide and 1.50 grams of water vapor. It was also determined that 279 mL of 0.1 M KOH was needed to titrate the acid completely.
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:^Calculate the mass of a sample of CaCl2 containing 2 mol of this substance
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What variables are used to calculate speed
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4) Which of the following can cause erosion?- Glaciers, wind, and animals- Acid rain, animals, and ice wedging- Wind, water, glaciers- Glaciers, wind, and acid rain5) Which factors affect the rate of weathering?- Temperature, ocean currents, and tides- Type of rock and amount of precipitation- Type of plants and animals- Amount of sunlight
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How many grams is 2.393 x 10^24 atoms of CI70.45 g CI140.9 ga140.9 mole CI70.45 mole CIHow many grams is 2.393 x 10^24 atoms of O70.45 g O140.9 g O63.58 mole O63.58 g O
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What is the difference between phenol and dettol?
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