Answers edited by Kayla

Back to user's profile
Next
How do you solve $12 + 3x = 30$ ?
How many atoms are present in 48.60 g of Mg?
What is the molar mass of sodium oxygen oxalate $Na_2C_2O_4$ ?
How do you solve $4=(5z+2)/3$ ?
What volume is needed to store 0.80 moles of helium gas at 204.6 kPa and 300 K?
How do you solve $n^2-4=77$ ?
A foam material has a density of $175$ $g$ $/L$ . What is its density in units of $lb$ $/ft^3$ ?
What is the volume of 19.87 mol of ammonium chloride ( $NH_4Cl$ ) at STP?
How many silver atoms are there in 4.01 g of silver?
How do you solve $3.4/x=2.17/7.7$ ?
How do you convert 100 mm Hg to Pa?
How do you solve $2x^2 - 5x - 3 = 0$ using the quadratic formula?
You have 1.25 L of oxygen gas at STP. What is its mass?
What is the molar mass of copper(l) nitrate, $Cu(NO_3)_2$ ?
How do you solve $4y+13=37$ ?
How many moles is 135 L of ammonia gas at STP?
If $9 L$ of a gas at room temperature exerts a pressure of $12 kPa$ on its container, what pressure will the gas exert if the container's volume changes to $4 L$ ?
How many moles of sodium nitrate, $NaNO_3$ , would be produced from the complete reaction of 253g sodium chromate, $Na_2CrO_4$ ?
What is the pressure (atm) of 3.5 moles of helium at -50 °C in a rigid container whose volume is 25.0 L?
How do you solve the inequality $2x - 8< 7$ ?
The pH of a solution is 8.7, what is the pOH?
How many moles of $ZnCl$ are in 100 mL of 0.300 M solution?
How do you figure out how many Valence electrons is in an atom?
A container with a volume of $7 L$ contains a gas with a temperature of $420^o K$ . If the temperature of the gas changes to $300 ^o K$ without any change in pressure, what must the container's new volume be?
The density of mercury metal is 13.6 g/mL. What is the mass of 3.55 mL of the metal?
The mass number of a chromium atom is 52 and it has 24 protons. How many neutrons does this atom have?
How do you balance $PbSO_4 → PbSO_3 + O_2$ ?
What is the total number of grams of $NaI$ needed to make 1.0 liter of a 0.010 M solution?
How do you convert $5.3 * 10^25$ molecules of $CO_2$ to moles?
What is the H+ concentration (in molarity) of a solution with a pOH of 6.7?
What is the reciprocal of $3$ ?
How do you determine the molar mass of $Fe_2O_3$ ?
What is the difference of $9.4-7.9$ ?
Solid magnesium has a specific heat of 1.01 J/g°C. How much heat is given off by a 20.0 gram sample of magnesium when it cools from 70.0°C to 50.0°C?
How do you solve for x: $3(2-x)=-12$ ?
62% of what is 89.3?
An $HCl$ solution has a concentration of $3.26 * 10^-2$ $M$ . What is the pH of this solution?
A mixture of two gases has a total pressure of 6.7 atm. If one gas has a partial pressure of 4.1 atm, what is the partial pressure of the other gas?
What is the boiling point (in °C) of a 1.56 m aqueous solution of $CaCl_2$ ?
What is the power of a kitchen blender can perform 3750 joules of work in 15 seconds?
What is the molality of a solution in which 2.3 g $O_2$ gas dissolved in 355 g of water?
A pendulum swings back and forth with a period of 0.5 s. What is the length of the pendulum arm?
A solution contains 225 g of glucose, $C_6H_12O_6$ , dissolved in enough water to make 0.825 L of solution. What is the molarity of the solution?
How do you solve for y: in $3y = ab$ ?
What is the molar mass of $NH_3$ ?
A textbook weighs 58.8 N on Earth. What is the mass of the textbook?
What is the $[OH^-]$ in a solution that has a $[H_3O]=1.0*10^-6$ $M$ ?
A solution has $[H^+] = 2.0 * 10^-5$ $M$ . How do you find the pOH of this solution?
What is 480 cm as m?
How do you use the Henderson-Hasselbalch to calculate the pH of a buffer solution that is .50 M in $NH_3$ and . 20 M in $NH_4Cl$ ?
What volume (in liters) does 2.895 moles of oxygen occupy at STP?
If $7/5 L$ of a gas at room temperature exerts a pressure of $6 kPa$ on its container, what pressure will the gas exert if the container's volume changes to $2/3 L$ ?
If $12 L$ of a gas at room temperature exerts a pressure of $64 kPa$ on its container, what pressure will the gas exert if the container's volume changes to $24 L$ ?
How do you solve $6x^2 - 7x + 2 = 0$ using the quadratic formula?
A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is it density?
How many $"g"$ of water are required to be mixed with $"11.75 g"$ of $HgCl$ in order to make a $"0.01 m"$ solution?
A certain shade of blue has a frequency of $7.32 * 10^14$ $Hz$ . What is the energy of exactly one photon of this light?
What is the density of sulfuric acid if 35.4 mL of the acid weighs 65.14 g?
How do you solve $14-x=3x-2$ ?
How is a Celsius temperature reading converted to a Kelvin temperature?
How many grams of sodium hydroxide are needed to completely neutralize 25.0 grams of sulfuric acid?
If an atom contains 12 protons and 10 neutrons, what's its mass number?
How do you solve $3x^2 - 8x + 5 = 0$ using the quadratic formula?
What is the amount of heat liberated (in kJ) from 327 g of mercury when it cools from 77.8°C to 12.0°C?
With a 0.5 M solution, many moles of NaCI would there be in 1,000 mL?
Abdul runs 7 miles in 80 minutes. At the same rate, how many miles would he run in 64 minutes?
How do you solve $m - 1 1/2 = - 5/4$ ?
How many molecules of water are there in 36 grams of $H_2O$ ?
What is the mass, in grams, of 15 L of $O_2$ at STP?
Sam ran 63,756 feet in 70 minutes. What is Sam's rate in miles per hour?
How do you solve $10x^2-11x-6=0$ ?
How do you convert 16.2 ft to m?
What is STP in chemistry?
How do you solve $x − 6 = 11$ ?
How do you find the length of the missing side given a=19 b=? c=26?
If $2.4*10^5$ $L$ of gas is at $180$ $mmHg$ , what is the pressure when the gas is compressed to $1.8*10^3$ $L$ at constant temperature?
If $3 L$ of a gas at room temperature exerts a pressure of $15 kPa$ on its container, what pressure will the gas exert if the container's volume changes to $5 L$ ?
Next