0
If 2 grams of substance A reacts with 3 grams of substance B what must be true about the products?
Wiki User
∙ 7y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How many moles are in 1.5 grams of iron?
To calculate the number of moles from grams, you must divide by the substance's molar mass
When 31 grams of phosphorous reacts with oxygen 71 grams of an oxide phosphorus is the product. What mass of oxygen is needed to produce 13 grams of this product?
Call the unknown mass x. The Law of Constant Proportions states that x/13 must equal 31/71, or x must be (13)(31)/71 or about 5.7 grams, to the justified number of significant digits.
What things must happen in order that a substance can be smelled?
For a human to smell a substance, The substance must be volatile, and molecules of it must be airborne and drift near the nose. The substance must come in contact with an olfactory nerve-ending in the nose. The olfactory nerve must react, by excitation, to the molecule, sending an electrical impulse to the brain. The brain must receive and process olfactory (smell) nerve signals.
What must happen to form a solution?
one substance must dissolve in an other
A substance represented as a symbol must be an?
element
How many moles are in 1.5 grams of iron?
To calculate the number of moles from grams, you must divide by the substance's molar mass
Reacts with acid to form h2 is physical or chemical property?
If a new substance has been produced it must be a chemical change.
In a chemical reaction the total mass of the reactants is 10.0 grams The total mass of the products must be?
Following the law of conservation of mass, also 10.0 grams.
When 31 grams of phosphorous reacts with oxygen 71 grams of an oxide phosphorus is the product. What mass of oxygen is needed to produce 13 grams of this product?
Call the unknown mass x. The Law of Constant Proportions states that x/13 must equal 31/71, or x must be (13)(31)/71 or about 5.7 grams, to the justified number of significant digits.
Grams to formula units?
It depends on the substance and its molar mass.In order to convert from grams to formula units, you must first convert grams to moles, then moles to formula units (grams --> moles --> formula units).1. Divide the mass (g) of the given substance by the substance's molar mass.2. Multiply the number of moles found in Step 1 (above) by Avogadro's number (6.022 x 1023).---- Mass substance ----- X 6.022 x 1023 formula unitsMolar mass substanceCONVERSION FACTORMass (g) substance x 1 mol substance ------- x ----- Avogadro's number/////////////////// molar mass (g) substance ------------ 1 mol substance
How many formula units in 47.63 grams?
It depends on the substance and its molar mass.In order to convert from grams to formula units, you must first convert grams to moles, then moles to formula units (grams --> moles --> formula units).1. Divide the mass (g) of the given substance by the substance's molar mass.2. Multiply the number of moles found in Step 1 (above) by Avogadro's number (6.022 x 1023).---- Mass substance ----- X 6.022 x 1023 formula unitsMolar mass substanceCONVERSION FACTOR47.63g substance x 1 mol substance ---- x ----- Avogadro's number///////////////////// molar mass (g) substance ////// 1 mol substance
How many grams in 2 gallons?
The two measurements are unrelated in that grams measures weight or mass and gallons measures volume. If the substance is known (i.e. water), a conversion can be made, but the density must be known.
Convert g per mole to grams?
first you must have a mass in mind. eg 345 grams of Carbon divided the mass by the molar weight of the particular substance. In the case of Carbon 12 grams/mole 345 grams/12 grams/mole = 28.75 moles
How much does 375 cc's weigh?
To convert cc to gram, one must multiple the specific gravity of the substance by the number of ccs to convert to a weight in grams.
How many ounces in 50 grams?
1.76 oz 1 oz = 28.34 grams 1 gram = 0.03 oz
What measurements must be known in order to find the density of a substance?
To find the density of a substance, you need to know its mass and its volume. The mass is usually measured in grams or kilograms, while the volume can be measured in cubic centimeters or milliliters for solid objects, or in liters for liquids. By dividing the mass by the volume, you can calculate the density of the substance.
If 40 grams of sodium hydroxide and 3 grams of hydrogen gas are produced when 27 grams of sodium metal is consumed how many grams of liquid water must have been added?
27 g Na + H2O = 40 g NaOH + 3 g H2. Law of Conservation of Mass. The reactants must have the same number of grams of the products. 40 + 3 = 43. 43 - 27 = 16 g H2O.
