All categories

3 years ago

What volume (cm 3 ) would 9.0 grams of aluminum occupy? Density is 2.7 g/cm 3 . Show your work

Chemistry

1 answer:

saul85 [17]3 years ago

5 0

Answer:

3.3 cm³

Explanation:

Use the density formula, d = m/v, to solve for the volume:

2.7 = 9.0/v

2.7v = 9.0

v = 3.3 cm³

You might be interested in

1. Given the hypotenuse of a 45°, 45°, 90° triangle is 8, find the length of the legs. Leave your answers in radical form if nee

Alex17521 [72]

Answer:

5.66

Explanation:

sin = opposite/hypotenuse

8 sin = opposite

8 sin 45 = 5.66

5 0

4 years ago

Indicate the mechanistic symbol (SN1, SN2) that is most consistent with the following statement. Select the single best answer.

Degger [83]

Answer:

The most consistent mechanism is SN1.

Explanation:

The solvolysis of tert-butyl iodide in methanol will arise by the SN1 mechanism.

The reason for that is due the geometric structure of tert-butyl. The tertiary structure allows the formation of a stable carbocation, after the loss of the iodide ion. The carbocation will then be attacked by methanol molecules forming an eter.

4 0

3 years ago

An unknown metal cylinder has a mass of 34.3 g and a volume of 2.1 mL . What is the density of the metal in g / m * L ?

saul85 [17]

Taking into account the definition of density, the density of the metal is 16.33 $\frac{g}{mL}$ .

<h3>Definition of density</h3>

Density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

$density=\frac{mass}{volume}$

From this expression it can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

<h3>Density of the metal in this case</h3>

In this case, you know that:

Mass= 34.3 g
Volume= 2.1 mL

Replacing in the definition of density:

$density=\frac{34.3 g}{2.1 mL}$

Solving:

<u><em>density= 16.33 </em></u> $\frac{g}{mL}$

In summary, the density of the metal is 16.33 $\frac{g}{mL}$ .

Learn more about density:

<u>brainly.com/question/952755?referrer=searchResults</u>

<u>brainly.com/question/1462554?referrer=searchResults</u>

6 0

2 years ago

Please help me please

Roman55 [17]

Answer:

Explanation:

Molarity = moles / volume (L)

moles = mass (g) / Molecular weight (g/mol)

so you have mass in gram and volume in ml ( Volume must be in litter because unit of mass is gram )

g = L , mg = ml

first you must calculate the number of moles for each molecule and convert the ml to L and use the molarity law to calculate molarity for each molecule .

Ex71.

a. Mw for NaCl = 23+35 = 58 g/mole

no of moles = 1.5 / 58 = 0.025

ml to L = 100/1000 = 0.1 L

Molarity = 0.025 / 0.1 = 0.25 M

b. Mw for K2CrO4 = 39x2 + 52 + 16x4 = 194 g/mol

no of moles = 1.5 / 194 = 0.0077

ml to L = 100 / 1000 = 0.1 L

Molarity = 0.0077 / 0.1 = 0.077 M

----------------------------------------------

Ex 72

a. Mw for MgBr = 24 + 80 = 104 g/mol

no of moles = 20 / 104 = 0.19

ml to L = 250 / 1000 = 0.25 L

Molarity = 0.19 / 0.25 = 0.76 M

b. Mw for LiCO = 7 + 12 + 16 = 35 g/mol

no of moles = 5.55 / 35 = 0.158 moles

ml to L = 75 / 1000 = 0.075 L

Molarity = 0.158 / 0.075 = 2.106 M

Good Luck

3 0

3 years ago

Which of the following is an example of a transuranium element

ella [17]

Elements with atomic number greater than 92(Atomic number of Uranium) are known as transuranium element.

Cm - Curium is a transuranium element as its atomic number is 96.

8 0

3 years ago

Read 2 more answers

What volume (cm​ 3​ ) would 9.0 grams of aluminum occupy? Density is 2.7 g/cm​ 3​ . Show your work

What volume (cm 3 ) would 9.0 grams of aluminum occupy? Density is 2.7 g/cm 3 . Show your work