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A 1.22g sample of an unknown has a volume of 1.73cm3. What is the density?
They use a number called a mole. This many atoms of an element equals its atomic weight in the periodic table. Molecular weight is the sum of atomic weight. Silver has an atomic weight of 108 grams/mole and Chlorine is 35.4 grams/mole. This makes AgCl 108 + 35.4 = 143.4 grams/mole. The % Chlorine is the atomic weight of Chlorine divided by the molecular weight of AgCl. 1 mole of AgCl would contain 35.4 grams / 143.4 grams = 25% Chlorine by weight. 1.22 grams AgCl would contain (0.25)*(1.22) = 0.30 grams of Cl. To find the Chlorine in the unknown, divide the weight of Chlorine from the experiment by the initial weight of the unknown. 0.30 grams / 0.63 grams = 0.48 = 48% Cl by weight.
How many grams of silicon would there be in a sample that contained 9.99 x 1025 atoms?
The mass of silicon is 4 659 g.
The formula for methane is CH4 Four moles of methanes would have a mass of?
Four times the atomic weight of carbon plus sixteen times the atomic weight of hydrogen = about 64 grams.
How many grams in 2 moles of HCI?
A Mole is the molecular weight expressed in grams. So for example water H2O: the molecular weight of oxygen is 16 and hydrogen is 1 so the total molecular weight of water is 18 (16 for one atom of oxygen plus 2x1 for the two atoms of hydrogen). For HCl, the atomic weight of Cl is 35 and H is 1 so the total molecular weight is 36. So 1 Mole of HCl is 36 grams. If you have 2 moles, it would be 72 grams.
How much does an ounce of pot weigh in grams?
Pots very in weight due to size, composition, and style. One ounce is equal to about 28.35 grams, which would indeed be a very small pot.
To measure the weight of a watermelon would you use liters grams or meters?
grams
How would you measure a mouse in grams or kilograms?
I would describe their weight in grams.
Would a button be weight in grams or kilograms?
Grams.
Would you express your weight in grams or kilograms?
If I weighed less than a kilogram I would of course express my weight in grams
What unit of weight would you use to measure an apple?
grams
Would you use grams or kilograms to weight a glass?
Grams. Definitely.
What would be the weight of 500grams on Jupiter?
Jupiter's surface gravity is about 2.5 times that on Earth. So a mass of 500 grams would have a weight of about 1250 grams weight.
Do you use grams or kilograms to weigh a letter?
Grams and kilograms are measurement of weight. For a letter you would use grams. For a package you would use kilograms as it weight is more.
What units would you measure the weight of a pencil in?
The units grams would be a good choice.
What is the molar mass of a substance?
The molecular weight (or, more appropriately, the molar mass) is defined by # of grams per # of moles. MW = g / mol For example: if you have 4 grams of substance and you know the substance to be 2 moles (say, for example, the balanced chemical equation), then your MW would be 2.
Which would you use to weight a mouse grams or kilograms?
Grams.
What words would you use to describe weight?
the number of particales contained in matter
