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How many moles of specified particles are present in a sample of N'O if each sample weighs 7.00 g?
Wiki User
∙ 16y ago
the mole is 30 g.
Wiki User
∙ 16y ago
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Which material is denser feather or iron plate?
Iron is much denser than a feather. Yet, a particular sample of feathers weighs more than a sample of iron.
A 4.0 liter sample of gasoline weighs 2700 grams What is the density of the gasoline expressed in the units gram per ml?
.68
A DNA double helix weighs about 1 X 10-18g per 1000 nucleotidepairs. Given a 7 x 10-15g DNA sample calculte the length in mm if its in the A helix form.?
transportation
Which are true statements A There are 6.02 times 1023 particles in a moleB The mass of 1 mol is the same as the atomic mass in grams A mole weighs 6.02 times 1023 amu A mole is the atomic mass?
please someone help me with this
A sample of Se weighs 20.5 grams will a sample of V that contains the same number of atoms weigh more or less than 20.5 grams?
A sample of Se weighs 20.5 grams. Will a sample of V that contains the same number of atoms weigh more or less than 20.5 grams? (more, less): _______Calculate the mass of a sample of V that contains the same number of atoms. _______ grams of VAnswer:Since the atomic weight of V is smaller than the atomic weight of Se, each atom will have a smallermass, and the sample will weigh less.Since the same number of moles will contain the same number of atoms, regardless of the element, it is only necessary to find the number of moles of Se in the 20.5 gram sample, and then to find the mass of the same number of moles of V.The atomic weight of Se is 79.0 g/mol1. Convert grams of Se to moles of Se:moles Se= 20.5 g Se1 mol = 0.260 mol Se79.0 gMultiply by moles per gram. Grams cancel out.The atomic weight of V is 50.9 g/mol2. To convert 0.260 moles of V to grams of V:grams V = 0.260 mol V50.9 g = 13.2 g V1 molMultiply by grams per mole. Moles cancel out.
A sample of air that weighs 1.25 kilogram how many kilogram of nitrogen are present?
On average, air contains around 76.7 % nitrogen gas by mass. This means that there is around 0.959 kg of nitrogen present.
Frank has a sample of steel that weighs 80 grams. If the density of his sample of steel is 8 gcm3 what is the sample and volume?
Its is 10 cm³ hun
What is the present tense of weigh?
I/you/we/they weigh. He/she/it weighs.
Which material is denser feather or iron plate?
Iron is much denser than a feather. Yet, a particular sample of feathers weighs more than a sample of iron.
A sample of seawater weighs 158 g and has a volume of 156 mL What is the density?
It is 1.0128 g/mL.
What are baseball player Billy Sample's physical stats?
Billy Sample is 5 feet 9 inches tall. He weighs 175 pounds. He bats right and throws right.
How do you get the specific gravity of a mineral?
Fill a beaker with water, and weigh it. Weigh a sample of the mineral. That's the mass of the mineral. Put the sample in the beaker and weigh that. The weight of the water-filled beaker plus the weight of the mineral sample will be greater than the weight of the beaker with mineral sample and water. The difference is the weight of the displaced water, in grams. The volume of the mineral sample, in cubic centimeters is equal to the weight of the displaced water, in grams. Calculate the specific gravity of the mineral by dividing the weight of the mineral sample by the volume of the mineral sample. Example: your beaker weighs 40 grams. Filled with water, it's 1040 grams. The sample of mineral weighs 160 grams. The beaker with the sample of mineral and water weighs 1179.7 grams. The mineral, and the beaker with water would have a combined weight of 1200 grams, but the beaker with mineral and water weighs 20.3 grams less than that, so the mineral sample is displacing 20.3 cubic centimeters of water. Given a mass of 160 grams and a volume of 2.03 CC, the specific gravity would be found by dividing 160 by 20.3. It's 7.85. (Which happens to be the specific gravity of some iron.)
What is the past form of weight?
Past: Weighed. Present: Weighs. Future: Will Weigh.
A 4.0 liter sample of gasoline weighs 2700 grams What is the density of the gasoline expressed in the units gram per ml?
.68
What is the present height of Justin bieber?
Hes 5'5".....and weighs like 105-125.
How does 2000 pennies weight?
A pre-decimal British Penny - (to 1967) weighs 9.45 grams. A British Penny - (1968 - 1991) weighs 3.56 grams. A British Penny - (1992 to present) weighs 3.56 grams. An Australian Penny - (1911 to 1964) weighs 9.45 grams. An New Zealand Penny - (1940 to 1964) weighs 9.45 grams. A US 1 cent (Penny) - (to 1982) weighs 3.11 grams. A US 1 cent (Penny) - (1982 to present) weighs 2.5 grams. Select one and multiply by 2,000.
What is the density of a 6.0 and times 102 mL liquid sample that weighs 450 g?
If you think to 600 mL the density is 0,75 g/mL
