Calculate the density of a substance for which 2.0 x 10-6 L of the substance has a mass of 1.58 x 10-6 kg. Express your answer using the correct number of significant figures, and do not enter your answer using scientific notation.
Calculate the density of a substance for which 2.0 x 10-6 L of the substance has...
Calculate the force of gravity between a newborn baby (mass = 2.6 kg) and an obstetrician (mass = 85 kg) ) who is 0.37 m from the baby. Express your answer to two significant figures and include the appropriate units. Find the force of gravity between a planet (mass=5.9*10^ 24 kg) and the Sun (mass=2.0*10^ 30 kg) . (The average planet-Sun distance Earth (distance=9.0 x 10^ 11 m) Express your answer to two significant figures and include the appropriate units....
A 20 kg piece of metal displaces 7.8 L of water when submerged. Find the density (kg/m^3) A 2.3 m-tall barrel is filled with water (with a weight density of 2127N / (m ^ 3) ). Find the water pressure (in kPa) on the bottom of the barrel Find the force of gravity between a object (mass = 2.9 kg) and another planet (mass=7.6*10^ 23 kg) when the planet at its closest to Earth \ d/stance=1.2 x 10^ 10 m)...
Find the force of gravity býtween a object (mass = 9.0 kg) and another planet (mass=8.6*10^ 23 kg) when the planet at its closest to Earth dis * tan c * e = 9.2x 10^ 10 m) . Express your answer to two significant figures and include the appropriate units. Using the formula for gravity, find the force of gravity on a 6.1 kg mass at Earth's surface. (The mass of Earth of 6*10^ 24 kg , and its radius...
A) Calculate the molality of a sucrose solution made by dissolving 73.1 grams sucrose into 55.3 grams water. The molar mass of sucrose is 342.2 g/mol. Record your answer in scientific notation using 3 significant figures. Use * for the multiplication symbol. B) A sodium hydroxide solution that contains 55.5 grams of NaOH per L of solution has a density of 1.14 g/mL. Calculate the molality of the NaOH in this solution. Record your answer to 2 decimal spaces. C)...
1a. A weak monoprotic base has a Kb = 1.67 × 10−10. Calculate the Ka for the conjugate acid of this base. Report your answer to THREE significant figures. You may (but are not required to) enter your answer in scientific notation; for example, if your answer is 2.44 × 10-2, you would enter 2.44E-2. The E must be uppercase. 1b. A weak monoprotic base has a Kb = 3.38 × 10−3. Calculate the Ka for the conjugate acid of...
Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter your answer with the correct number of significant figures.885.75 g + 10.151 g - 25.50 g Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter the correct number of significant figures. (2.700e2 cm)3 / (1.20e3 cm)2 Calculate the value of the following in exponential form, using standard...
At 25 °C the solubility of silver bromide is 8.77 x 10' mol/L. Calculate the value of Ksp at this temperature. Give your answer in scientific notation to 2 SIGNIFICANT FIGURES (even though this is strictly incorrect).
Calculate the quantity of heat energy, in Joules, that is absorbed when a gold (.128J/goC) ring with a mass of 12.68 is warmed from 23.2 oC to 58.1 oC. Report your answer, in J, using the correct number of significant figures. Do not enter units and do not use scientific notation.
At 25 oC the solubility of calcium sulfate is 4.90 x 10 -3 mol/L. Calculate the value of K sp at this temperature. Give your answer in scientific notation to 2 SIGNIFICANT FIGURES (even though this is strictly incorrect).
Calculate the number of equivalents/L of Ca2+ in a solution that is 2.7 × 10−2M in Ca2+ . Express your answer in scientific notation. Enter your answer in the provided box.