Chemistry

A chemist must prepare of nitric acid solution with a pH of at . He will do this in three steps: Fill a volumetric flask about halfway with distilled water. Measure out a small volume of concentrated () stock nitric acid solution and add it to the flask. Fill the flask to the mark with distilled water. Calculate the volume of concentrated nitric acid that the chemist must measure out in the second step. Round your answer to significant digits.
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Two identical light bulbs are connected to a battery in a series circuit.An ammeter is wired into the circuit at measures a current of thebattery to be 0.5 Amps. The two light bulbs are then wired in parallel.The ammeter shows that the current:
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What is the hydronium concentration of a solution of ph 4.19M
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Sulfuric acid (H2SO4) has a molar mass of 98.1 g/mol. How many oxygen atoms are found in 75.0 g of H2SO4?A. 1.15 10^23 B. 1.84 10^24 C. 4.61 10^23 D. 7.87 10^23
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it takes 26.23 mL of a 1.008 M NaOh solution to neutralize a solution of an unknown monoprotic acid in 150.2 mL of solution. What is the molarity of the unknown?
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If 50.0 g of KCl reacts with 50.0 g of O2 to produce KClO3 according to the following equation, how many grams of KClO3 will be formed? Word and Formula equation.
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How many electrons with chlorine (Cl) in group 17 gain to become stable?
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NEED HELPPP PLSSSSSSSSSS
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if the [H+] = 0.01 M, what is the pH of the solution, and is the solution a strong acid, weak acid, strong base, or weak base?12, strong base2, weak acid12, weak base2, strong acid
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Is it true or false?
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Given the equation representing a solution equilibrium: BaSO4(s) Ba2+ (aq) + SO4 2- (aq)What occurs when Na2SO4(s) is added to this system, increasing the concentration of SO4 2- (aq)?1) The equilibrium shifts to the left, and the concentration of Ba2+(aq) decreases 2)The equilibrium shifts to the left, and the concentration of Ba2+(aq) increases3)The equilibrium shifts to the right, and the concentration of Ba2+(aq) decreases4)The equilibrium shifts to the right, and the concentration of Ba2+(aq) increases
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If you collect 1.75 L of hydrogen gas during a lab experiment, when the room temperature is 23C and the barometric pressure is 105 kPa, how many moles of hydrogen will you have?
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chemistry neutralization
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a solution contains 29.1g per litre of aluminium sulphate.calculate the number ofsulphate ions in 350cm^3 of the solution(Al=27,S=32,O=16)
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Proper lane placement can include positioning your car...A. away from other cars.B. 36 inches from the right or left line.C. one inch from either lane line.
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What are 3 stages of the water cycle are
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The mass of single iridium atom is 3.19*10^-22 grams how many iridium atoms would be in 56.4 milligrams of iridium
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The chemical formulas for the following-Copper (II) and IodinePotassium and FluorineBarium and FluorineLithium and OxygenCopper (II) and SulfurSilver sulfaceLithium hydroxideBarium phosphateAmmonium sulfideMagnesium fluorideSodium Chloridealuminum phosphidecopper (I) oxide im so sorry, i need help as soon as possible, this is due like right now and my dad is yelling at me
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The element hydrogen has the highest specific heat of all elements. At room temperature, hydrogen's specific heat is 14.30 J/g C. If the temperature of a 340.0 g sample of hydrogen is to be raised by 30C, how much energy will have to be added to the hydrogen?
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A balloon containing N2 has 1.70 moles and occupies 3.80L. What will the volume be if the number of moles is increased to 2.60moles? Help me please
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18.35 mL of an HCN solution were titrated with 35.4mL of a 0.268M NaOH solution to reach the equivalence point. What is the molarity of the HCN solution
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A community includesA. all of the living organisms in a specific place at a specific time,B. all plants, animals, minerals, and water in a specific place at a specific time,C. only the plants in a specific place at a specific time.D. only the animals in a specific place at a specific time.
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What is a covalent bond
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Atom X contains seven protons and seven neutrons. Atom Z contains seven and eight neutrons. Which of the following statemenats correctly describes the two atoms?A.They are isotopesB.They are radioactiveC.They are atims of different elements.D. They have the same mass numberPiz help!!!!
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