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The alien spaceship that abducted Yuchong was traveling at 0.5c relative to the earth. Yuchong was 29 years old at the time of the abduction. By the time Yuchong is 70 years old, how many light-years is the ship away from the earth? (Assume that the ship does not stop or change direction.)
find out the molecular formula and empirical of this compound and determined to contain 4.36 grams of phosphorus and 5.64 grams of oxygen
pretend the proton and electron are point like charges. what is the force of attraction between the two if the
A runner in training ran a pace test at a truck and came up with the following 1.0 mile lap times in minutes/seconds.5:54, 6:02, 6:04, 6:09, 5:48. a) What was his average pace in minutes per mile?
What is the pH (to nearest 0.01 pH unit) of a solution prepared by mixing 67.0 mL of 0.0755 M HBrO and 89.0 mL of 0.130 M NaOH
A 25.43 g sample of a substance is initially at 25.9 °C. After absorbing 1137 J of heat, the temperature of the substance is 120.5 °C. What is the specific heat (c) of the substance?
You need to prepare 180g of a 9% cream using a 30% stock cream and a 2% cream base. How much is needed of each?
Is the world adiabatic or isothermal and why. Is the world at constant pressure or constant volume and why.
What is the specific heat of lead if it takes 97.5J to raise the temperature of a 75.0g block by 10.1 degress celcius?
How many milliliters of 5.40 M H2SO4 are required to react with 4.00 g of solid containing 50.0 wt% Ba(NO3)2 if the reaction is as shown?
consider the reaction shown below.4 ph3g p4g 6 h2gif in a certain experiment over a specific time period 0.0033 mol
What volume, in mL, of 0.1085 M H2SO4 would react exactly with 40.0 mL of a 0.995 M solution of KOH by the reaction: H2SO4 (aq) + 2 KOH (aq) -------> K2SO4 (aq) + 2H2O (l)
What is meant by an ideal gas? When does the behavior of a real gas approximate that of an ideal gas? On the molecular level, what causes gas pressure? In terms of kinetic theory, explain why a basketball stays inflated.
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