Chemistry High School

The density of aluminum is 2.7 grams per cm'.
How many grams does 12 cm of aluminum
weigh?

Answers

Answer 1

Answer:

32.4grams

Explanation:

Density of a substance can be calculated as follows:

Density = mass ÷ volume

According to this question, the density of aluminum is 2.7g/cm³ while its volume is 12 cm³. The mass of aluminum is therefore,

2.7 = m/12

m = 12 × 2.7

m = 32.4grams.

The mass of aluminum is 32.4grams

Related Questions

Cl2 + 2NO --> 2NOCI

What mass of NOCI will be produced if 2.58 X 10^22 molecules of CI2 react?

Answers

Answer:

Explanation:

Find the answer below

What is the percent by mass of chlorine CI in NaCI to 3 significat digits please help

Answers

Answer:

60.7%

Explanation:

Molar mass of NaCl = 23 +35.5

= 58.5 g/mol

Molar mass of Cl = 35.5 g/mol

Percentage by mass of Cl =?

The percentage by mass of Cl in NaCl can be obtained as shown below'

Percentage by mass = mass of element / mass of the compound × 100

Percentage by mass of Cl

= 35.5 / 58.5 × 100

= 3550 / 58.5

= 60.7%

Therefore, the percentage by mass of Cl in NaCl is 60.7%

Can someone please solve this for me and explain it

Answers

83.3% yield

Explanation:

First, we need to convert 240 g of [tex]Fe_{2}O_{3}[/tex] into moles:

[tex]240 \:g \:Fe_{2}O_{3} \:\times(\frac{1\:\text{mol}\:Fe_{2}O_{3}}{159.69\: \text {g}\:Fe_{2}O_{3}})[/tex]

[tex]=1.50 \:\text{mol}\:Fe_{2}O_{3}[/tex]

Next, find the theoretical Fe yield using molar ratios.

[tex]1.50 \: \text {mol} \: Fe_{2}O_{3}\: \times (\frac{2\: \text{mol} \: Fe}{1 \:\text{mol} \: Fe_{2}O_{3}})[/tex]

[tex] = 3.00 \: \text{mol} \: Fe[/tex]

Then convert this back into grams:

[tex]3.00 \: \text{mol} \:Fe \times (\frac{55.845 \: \text{g} \: Fe}{1 \: \text{mol} \: Fe}) = 168 \: \text{g} \: Fe[/tex]

Note that actual yield is only 140 g Fe so percentage yield is

[tex]\dfrac{140\:\text{g}\:Fe}{168\:\text{g}\:Fe} \times 100[/tex]%= 83.3%

83.3%

The answer is 83.3%

BRAINILIEST PLEASE

What type of molecule is 3-hexyne?

Answers

The type of molecule in which 3-hexyne is grouped under is referred to an alkyne.

What is Alkyne?

This is an organic compound which has a triple bond. It falls under the group of hydrocarbons present on earth.

They are usually represented with the suffix -yne which is why 3-hexyne falls under such category.

Read more about Alkyne here https://brainly.com/question/22933069

#SPJ1

A sample of gas occupies a volume of 55.3 L, has a temperature of 23.3 °C and a pressure of .658 atm. Calculate the number of moles of gas which are present in the sample. R= .0821 atm L/mol K

Answers

Answer: The number of moles of gas which are present in the sample are 1.49 mol.

Explanation:

Given: Volume = 55.3 L

Temperature = [tex]23.3^{o}C[/tex] = (23.3 + 273) K = 296.3 K

Pressure = 0.658 atm

Formula used is as follows.

PV = nRT

where,

P = pressure

V = volume

n = no. of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

[tex]PV = nRT\\0.658 atm \times 55.3 L = n \times 0.0821 L atm/mol K \times 296.3 K\\n = \frac{0.658 atm \times 55.3 L}{0.0821 L atm/mol K \times 296.3 K}\\= \frac{36.3874}{24.32623}\\= 1.49 mol[/tex]

Thus, we can conclude that the number of moles of gas which are present in the sample are 1.49 mol.

Other Questions
Why did some fugitives go to Canada instead of staying in northern states? which type of conic section is represented by the equation y = (x-10)^2 - 5? 2Discuss human activities that contribute to the increase in carbon dioxide in the atmosphere. pls helpme with this plsssssssssssssssssssssssssssssssssss 1. Explain why food lasts longer when placed in the refrigerator as opposed to on the counter in the kitchen.2. List and describe four factors that affect the rate of a reaction.3. Sketch a potential energy diagram for the following reaction: N2(g)+3H2(g)-->2NH3(g)Use Table I in the Chemistry Reference Table to identify the following on your graph: potential energy of reactants, potential energy of products, activation energy, and heat of reaction. State the value of the enthalpy and whether the reaction is endothermic or exothermic. Label the y-axis and potential energy and x-axis as reaction coordinate.4. Describe and explain the effect of (a) the increase in temperature, (b) the increase in concentration of C2H4, and (c) a decrease in pressure to the following system at equilibrium: 2C + 2H2 + heat C2H4 1.What is the slope of the line through the points (-2, -1) and (8, -3)? Papa hadn't shaved for a few weeks" what does this suggest about the situation in the Hubermann household? Eli will photograph a wedding for a flat fee of $1560 or for an hourly rate of $180. For what lengths of time would the hourly rate be less expensive?The hourly rate would be less expensive if the wedding was less than ? hours long.(Simplify your answer.) 6) How does the setting of the kitchen enhance the meaning of the excerpt? OA. by showing that surroundings can change, much like the seasons . by providing continuity along the journey of seasonal memories C. by offering stability when the characters experience conflict OD. by changing gradually, similar to the way the characters do. lessons learned from athena? Explaining the Japanese philosophy of life reflected in Architecture? Illustrated through example tools. Which river flows through the center of the Piney Woods region? Candi is a subject who frequently jeopardizes and sabotages her employment opportunities by leaving for break early and returning late. You are observing her today in her Work-Adjustment Training (WAT) program. She seems to have taken an instant liking to you, the observer. Today, Candi has left on time for each of her breaks and has returned early. It is most likely that Candi is demonstrating: Find the coordinates of a point on the directed segment from (3,-2) to (8,0) that divides it into a ratio of 3:1. Choose an equation of a line through the point (1,-1) parallel to y=3x+4. when the national forest policy was formed in india Bonjour! Aujourdhui je vais vous dmontrer la recette pour la Galette des Rois au chocolat. ______________ (voir, first person plural) les ingrdients pour la prparer. Il nous faut deux rouleaux de pte feuillete, deux ufs, une fve, 100 grammes damandes en poudre, 100 grammes de chocolat dessert, 75 grammes de beurre et 50 grammes de sucre. ______________ (prchauffer, first person plural) le four 210o Celsius. ______________ (taler, formal) la pte feuillete sur une plaque garnie de papier sulfuris. ______________ (faire fondre, informal) le chocolat au bain-marie. ______________ (mlanger, first person plural) bien un jaune duf, sucre, fve et amandes avec le chocolat fondu. Maintenant, ______________ (verser, informal) la prparation au chocolat sur la pte en laissant 3 cm de rebord. ______________ (couvrir, formal) de deuxime rouleau de pte et ______________ (pincer, formal) bien les bords. ______________ (fouetter, formal) un jaune duf avec du lait et ______________ (enduire, formal) le dessus de la pte. ______________ (enfourner, formal) pendant 15 minutes. At a local restaurant, the amount of time that customers have to wait for their food isnormally distributed with a mean of 34 minutes and a standard deviation of 2minutes. If you visit that restaurant 26 times this year, what is the expected numberof times that you would expect to wait longer than 38 minutes, to the nearest wholenumber? A toy car rolls down a slope. If it takes 5.94 s to accelerate from 3.22 m/s to 12.4 m/s, what is the value of the acceleration? 2.01 m/s21.35 m/s21.55 m/s20.219 m/s2 In MNO, The Measure of