0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What mass of KOH is needed to make 400mL of 725 M KOH?
I assume you mean 7.25 M KOH, but the process is the same anyway.Molarity = moles of solute/Liters of solution ( 400 ml = 0.4 Liters )7.25 M KOH = X moles KOH/0.4 Liters= 2.9 moles KOH (56.108 grams/1 mole KOH)= 163 grams potassium hydroxide needed===============================
What is the percent of a water solution that contains 60 g of calcium chloride and that has a mass of 400 g?
60 g/400 g (x100%) = 15% (w/w) calcium chloride
A chemist has one solution that is 80 percent acid and another solution that is 30 percent acid how much of the second 30 percent solution is needed to make a 400L that is 62 percent acid?
.80x+.30y=400*.62 .80x+.30y=248 This is equation one. x+y=400 x=400-y This is the second equation. .80(400-y)+.30y=248 320-.80y+.30y=248 -.50y=-72 Y=144 X=256 CHECK .80(256)+.30(144)=400(.62) 204.8+43.2=248 248=248
The patient needs to take 0.6 grams of ibuprofen (Advil). The label on the container reads Advil tablets 400 mg. How many tablets should he patient take?
400 mg x 1 g/1000 mg = 0.4 g for each tablet0.6 g x 1 table/0.4 g = 1.5 tablets needed to make 0.6 grams.
How hot is 400 degrees Celsius?
Answer: 400 ºF = 204.44 ºC
Convert 7.25 percent to a fraction?
7.25% = .0725 = 725/10000 = 29/400
How much force is needed to lift a 400 g mass is?
0.4 Newtons
How many milligrams of an active ingredient are needed to make 400 ml of a 1 in 1000 solution?
It is not clear whether the strength of the solution is given in terms of mass/mass or volume/volume (or mass/volume). Without that information, it is not possile to answer the question. Depending on which one you may need the density of the active ingredient or of the solvent to convert between mass and volume of that component.
How many pounds are in 400 kilograms?
That depends on where you are. Something that weighs 400 pounds on Earth has 181.4 kilograms of mass. Something that weighs 400 pounds on the Moon has 1,096.3 kilograms of mass. Something that weighs 400 pounds on Jupiter has 68.7 kilograms of mass.
What is the mass of a lion?
Mass and Weight are essentially the same on Earth. So a lion that weighs 400 pounds has a mass of 400 pounds. The mass range is therefore anywhere from 4 pounds to 500 pounds for a lion.
Needed 400 inches of fabric for curtains how many yards of fabric needed to make 4 curtains panel curtains 100 long and 42 wide?
About 11-12 yards
It takes 50 eggs to bake 90 cakes using a large commercial bakery's recipe how many eggs will be needed to bake 400 cakes?
222 eggs as 50 divided by 90= 0.55- so that is 0.55 eggs for one cake then times 0.55 by 400 and you get 222.22 -so that's 222.22 eggs for 400 cakes so you round it down to 222 eggs = 222 eggs are needed to make 400 cakes
How many cans of paint are needed to cover an area of 2200 square units if the can of paint covers an area of 400 square units?
Cans of paint needed: 2200/400 = 5.5 therefore 6 cans are needed
What is your weight and mass on earth if you way 40 kg?
40kg of mass, 400 (approx) N of weight.
What mass of KOH is needed to make 400mL of 725 M KOH?
I assume you mean 7.25 M KOH, but the process is the same anyway.Molarity = moles of solute/Liters of solution ( 400 ml = 0.4 Liters )7.25 M KOH = X moles KOH/0.4 Liters= 2.9 moles KOH (56.108 grams/1 mole KOH)= 163 grams potassium hydroxide needed===============================
If 1 gallon of paint covers 400 square feet about how many gallons of paint are needed to paint the outside of a spherical tank of diameter 20 feet?
Surface area of a sphere = 4*pi*radius2 Area = 4*pi*102 = 400*pi square feet Amount needed in gallons = (400*pi)/400 = pi (3.141592654) Just over 3 gallons will be needed.
400grams equals how many milliletres?
stupid question. mass and volume are not interchangable. it depends on the density of the mass. a 400 gram balloon will take up more milliliters than a 400 gram rock.
