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3 years ago

What is the mass in grams of the Hope Diamond, the world's largest blue diamond at 44.4 carats?

1 answer:

3 0

1 carat diamond weighs 0.2 grams. Hope Diamond weighs 44.4 carats. So, the weight of the Hope Diamond in grams can be obtained by multiplying 44.4 by 0.2. So, we have 44.4 * 0.2 = 8.88 grams. Therefore, Hope Diamond, he world's largest blue diamond weighs 8.88 grams.

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6.75 L of carbon dioxide gas are stored at a pressure of 175 atm. If the temperature and number of gas particles do not change,

I am Lyosha [343]

Answer:

4.24 L

Explanation:

6.75 L - 175 atm

x. - 110 atm

175atm x=742.5L /atm

175atm 175atm

therefore x=4.24 L

3 0

3 years ago

If I contain 3 moles of gas in a container with a volume of 60 liters and at a

viktelen [127]

Answer: n = 3.0 moles

V = 60.0 L

T = 400 K

From PV = nRT, you can find P

P = nRT/V = (3.0 mol)(0.0821 L-atm/K-mol)(400 K)/60.0L

P = 1.642 atm = 1.6 atm (to 2 significant figures)

4 0

3 years ago

Read 2 more answers

Question 14 A student dissolves 1.5g of styrene C8H8 in 225.mL of a solvent with a density of 1.02/gmL . The student notices tha

Yuki888 [10]

We must to know:

Cm = molarity = niu / Vs, when the niu = no. of moles and Vs = Volume of solution

the no. niu = mass / molecular mass of substance

molecular mass of C8H8 = 12x8+8x1 = 104 g/mol

=> niu = 1,5 / 104 = 0,0144 moles C8H8

=> Cm = 0,0144/0,225 = 0,06 mol/L

Cmm = molality = niu (C8H8) / mass of solvent (kg)

=> p = mass / V => mass (solvent) = p x V

=> 225 x 1,02 = 229,5 g solvent = 0,2295 kg solvent

=> Cmm = 0,0144 / 0,229,5 = 0,063

8 0

2 years ago

Read 2 more answers

Determine the empirical formula of a compound containing 1.71 g of silicon and 8.63 g of chlorine.

Basile [38]

Answer:

The answer to your question is: SiCl₄

Explanation:

Data

amount of Si 1.71 g

amount of Cl 8.63 g

MW Si = 28 g

MW Cl = 35.5

Process (rule of three)

For Si For Cl

28 g of Si ------------------ 1 mol 35.5 g of Cl --------------- 1 mol

1.71g of Si --------------- x 8.63 g of Cl -------------- x

x = 1.71 x 1 / 28 = 0.06 mol x = 8.63 x 1 / 35.5 = 0.24 mol

Now, divide both results by the lowest of them.

Si = 0.06 mol / 0.06 = 1 molecule of Si Cl = 0.24 / 0.06 = 4 molecules of Cl

Finally

Si₁ Cl₄ or SiCl₄

8 0

3 years ago

All atoms of an element have the same number of ________. electrons neutrons protons protons plus neutrons

Cloud [144]

Answer:

protons

Explanation:

An element, by definition, always has the same number of protons. Sodium, element 11, has 11 protons. Anything with 11 protons is a sodium atom, regardless of the number of neutrons, electrons, or politicians.

6 0

2 years ago