2.91 moles of aluminum are how many grams(with work)

Answers

Answer 1
2.91 mol Al * ( 26.982 g Al / 1 mol Al) = 78.518 grams
Answer 2
It will be 78.51627558 bec one gram of Al equal 0.037062379468509

Related Questions

50.0 grams of water vapor at STP occupies how much volume?

A 62.2 L

B 69.0 L

C 47.2 L

D 22.4 L

Answers

Answer:

22.4 L

hope it will help you

How many Liters of water do you need to make 8g 10 HSiCl3 +15H,0—1 HS11001+30 HCI
A.9.81 L of water
B..015 L of water
C.2.45 L of water
D.6.51 L of water

Answers

Answer:

A maybe I said maybe hope help

Explanation:

..

Copper and silver react with water to liberate H2O gas true or false​

Answers

Answer:

well I think it's false

I hope it helps

have a nice day

#Captainpower

~I will give the brainliest ~
Will the solubility of PbCl2 in 0.10 Molar PbBr2 be larger than, smaller than, or the same as in pure water?

A. the same
B. smaller
C. larger
D. cannot be determined

Answers

Answer:

Smaller

Explanation:

I took the test

Consider the following reaction:

2CuCl2 + 4KI → 2CuI + 4KCl + I2

When 0.64 grams of CuCl2 reacts with 0.78 grams of KI, how many grams of I2 are formed?











What is the limiting reactant?


What is the excess reactant?
PLEASE I NEED HELP

Answers

Your limiting is CuCI2 and the excess is KI (from what i’ve heard from my tc to find it just use the moles or look at the grams)Do you want me to do the qn and give u the ans or?

Explanation:You have more grams of KI than CuCI2
irl example : I need 200g of flour to bake 1 muffin and 100g of butter.But I have 300g of butter and only 200g of flour.This means I can only bake up to 1 muffin since I got excess grams of butter.But to use up all my 300g of butter I need 400g more of flour.Making my butter the excess while my flour the limiting since I have less of it and it also determines how much muffin would I get at the end of the bake.

im sorry if that example sounds clowny T-T


Calculate the volume in L of 11.6 moles of Neon at 120 K when it has a pressure of 25.9 atm

Answers

Answer:

The volume of the gas is approximately 4.41 liters

Explanation:

The details of the data of the Neon gas are;

The number of moles of Neon gas present, n = 11.6 moles

The temperature of the sample of Neon gas, T = 120 K

The pressure of the sample of the Neon gas, P = 25.6 atm

By the ideal gas equation, we have;

P·V = n·R·T

Where;

R = The universal gal constant = 0.08205 L·atm·mol⁻¹·K⁻¹

Therefore, we get;

V = n·R·T/P

Which gives;

V = 11.6 moles × 0.08205 L·atm·mol⁻¹·K⁻¹ × 120 K/(25.9 atm) ≈ 4.4097915 L

The volume of the gas, V ≈ 4.41 L.

Please help im testing and need an answer as soon as possible

Kaya collects the data shown in the table.

A 2-column table with 3 rows. The first column labeled Quantity has entries Voltage, Current, Resistance. The second column labeled Value has entries 6.0 volts, 0.3 Amperes, empty.

What is the resistance in the circuit?
0.05
1.8
5.7
20

Answers

Answer:

20

Explanation:

not sure please correct me if im wrong

Answer:

20

Explanation:

Got it right on time 4 learning

i need to do a science project and i have to write about "reducing ocean pollution" could anybody give my ideas? THANKS CHICAS

Answers

Answer:

decomposers

Explanation:

I'm not sure weather your supposed to create an actual experiment or write a paper. If an experiment, test certain acids to see which one can decompose plastics the fastest and determine which one can be spread through the oceans to melt down plastic. If a paper, discuss the idea of genetically modified fish. Some animals in the wild have the ability to eat pollution (wrappers, bottles, ect.), so mutating fish such as bottom feeders to be able to do the same would easily rid the water of pollution and make for one interesting of a paper! hope this sort of helped!

What is the acceleration of a 7 kg
mass being pulled by a 56 N force?

Answers

Answer:

8 meters per second per second

Explanation:

Newton's second law: [tex]f=ma[/tex], force = mass multiplied by acceleration.

Therefore 56 / 7 = acceleration = 8

what might happen if the strong force didnt exist

Answers

If the strong force didn't exist, there would be nothing but hydrogen and neutrons floating in space. ... When the protons and neutrons are apart there is no strong force but when they are together to resemble a nucleus, the strong force is in action.

Answer:

Atomic nuclei would fly apart

Explanation:

Can someone pls pls help me with these questions?!?!

Answers

Answer:

13) What common form of energy (not including kinetic or potential) is not included in the “Energy Symbols” key that would normally be present in these examples?

1) Sound Energy

2) Magnetic Energy

14)Look carefully at each of the four systems shown above. Knowing what we have discussed about energy conversions, identify (list) at least three different places where this form of energy (sound) should be “produced”.

1) When you open the water tap, in the turbine and the sound of the light bulb.

2) In the light bulb

3) The sound of the kettle, the turbine and when water is boiling.

4) The movement of the wheel of the bicycle, the turbine and the light bulb.

down there (pls hurry!!)

Answers

If you crush it up its going to dissolve faster and so I think it’s going to be A

whoever answeres all the questions will get brainliest question

question 1
why is steel not a mineral?
A. is it man-made

B. is it alive

c. is it found in nature

d. is it strong

question 2
which mineral is used to make pencils?

A. diamond

B. jade

c. graphite

d. calcite

question 3
wich mineral is used to make glass

A. emerald

b. quartz

c.copper

D. halite

question 4
wich mineral do we eat

A. silver

b. jade

c. quartz

d.halite

question 4 _____ is the hardest mineral and ____ is the softest

A. quartz, graphite

B. silver, gold

C. diamond , talc

d. halite, calcite

question 5
what is minerals streak

A. the color minerals streak

b. how much the mineral weighs

c. the shape of crystals

d. the color left behind when a mineral is
scraped on porcelain tile

question

question 6
all minerals break at the same time

a. true

b. false

Answers

Answer:

1. A

2. C

3. B

4. D

5. D

6. B

Explanation:

I'm not quiet sure on 5 but I'm pretty sure its correct

H2O2 is what type of compound?

Answers

H2O2 Is a chemical compound called hydrogen peroxide

How many moles are there in 100g of helium

Answers

Explanation:

so for this one u need to remember this equation and use it to find out moles= mass /mr . Mr of helium is 4

so moles= mass /mr

=100/4

=25 moles

hope this make sense:)

what is the major role of wind on earth?

Answers

Answer: Wind, in climatology, the movement of air relative to the surface of the Earth. Winds play a significant role in determining and controlling climate and weather.

Add wiwiwuwywuwiwuwywywyeyye to add add

The concentrations of hydrogen ion in two solutions are (a).1×10-4moldm and (b).5×10-9moldm. What is the pH of each solutions?

Answers

Answer:

(a) pH=4.0

(b) pH=8.3

Explanation:

Hello there!

In this case, since the pH is understood as the potential of the hydrogen in an aqueous solution, and we can calculate it is as follows:

[tex]pH=-log([H^+])[/tex]

We simply need to plug in the concentrations on each question as shown below:

(a)

[tex]pH=-log(1x10^{-4})\\\\pH=4[/tex]

(b)

[tex]pH=-log(5x10^{-9})\\\\pH=8.3[/tex]

Regards!

What percent of the water reactant is oxygen?

Answers

Answer:

Both hydrogen and oxygen gases exist as diatomic (“two-atom”) molecules. These molecules are the reactants in the reaction

Explanation:

:)

What color will the
flame turn if we
immerse a steel
wire in a barium
chloride solution and
then heat it? Why does that happen?

Answers

Answer:

Clean a platinum or nichrome (a nickel-chromium alloy) wire by dipping it into concentrated hydrochloric acid and then holding it in a hot Bunsen flame. Repeat this until the wire produces no color in the flame.

____CH4 + ____O2  ____CO2 +____H2O

Answers

[tex]methane \: reacts \: with \: oxygen [/tex]

CH4 + 2O2 → CO2 + 2H2O.

Step-by-step explanation

L.H.S.

C = 1, H = 4, O = 2×2 = 4.

R.H.S

C = 1, O = 2, H = 2×2= 4, O = 2.

What is the molality of a solution containing 19.5g HCl and 257g of H2O?

Answers

m= 2.06

molality is m = moles/kg

if you look at the periodic table the mass of HCl is 36.458 rounded to 36.5

divide the 19.5g by the mass (36.5) and you’ll get 0.53

next, you convert g to kg so you divide by 1,000. 257/1,000 = 0.257

you plug those two answers into the equation > m= 0.53 mol HCl/ 0.257kg H20

the answer will be 2.06 when you divide and there’s how you get the molality.

remember, HCl is the solute and H20 is the solvent.

Mention any two uses of oxygen gas.​

Answers

Answer:

steel, plastics

Explanation:

Hope it helps!

. Which of these types of electromagnetic radiation has the lowest energy?
a. Radio waves
b. Visible light
c. Gamma rays

Answers

a. Radio waves.

Radio waves are the lowest-energy electromagnetic waves. They also have the longest wavelengths and the lowest frequencies. Hope this helps!

A 125.0-g sample of a metal heated to 100.0 ∘C and placed in a calorimeter that contains 250.0 g of water. The temperature rises from 24.3 ∘C to 27.2 ∘C. What is the specific heat capacity of the metal? Ignore the calorimeter in your analysis. Group of answer choices

Answers

Answer:

0.333J/g°C is the specific heat of the metal

Explanation:

The heat that the metaal gives is equal to the heat that water is absorbing. The equation is:

S(metal)*ΔT(metal)*Mass(metal) = S(H2O)*ΔT(H2O)*Mass(H2O)

Where S is specific heat, ΔT is change in temperature and mass the mass in grams of the metal and water.

Replacing:

S(metal)*(100.0°C-27.2°C)*125.0g = 4.184J/g°C*(27.2°C-24.3°C)*250.0g

S(metal) = 4.184J/g°C*(27.2°C-24.3°C)*250.0g / (100.0°C-27.2°C)*125.0g

S(metal) = 0.333J/g°C is the specific heat of the metal

Why are scientists using acoustic surveys to learn about rainforest diversity

Answers

Answer:

Acoustic survey data can help inform scientists about the locations of the rainforest with the highest biodiversity. ... By working with these companies, The Nature Conservancy can help inform them of where they might try to create wildlife corridors or connected habitats on their lands

If 200 mL of a gas at 27 °C is cooled to -33 °C at a constant pressure, the volume will be

Answers

Answer:

V2 = 159.48 mL

Explanation:

Given the following data;

Initial volume = 200 mL

Initial temperature = 28°C

Final temperature = -33°C

To find the final volume, V2, we would use Charles law;

First of all, we would convert the temperature in Celsius to Kelvin.

Mathematically, it is given by the formula;

Kelvin = 273 + C

Substituting into the equation, we have;

Initial temperature, T1:

Kelvin = 273 + 28

Kelvin = 301K

Initial temperature, T1:

Kelvin = 273 - 33

Kelvin = 240K

To find new volume V2, we would use Charles' law.

Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles is given by;

[tex] VT = K[/tex]

[tex] \frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}[/tex]

Where;

V1 and V2 represents the initial and final volumes respectively.

T1 and T2 represents the initial and final temperatures respectively.

[tex] \frac{V1}{T1} = \frac{V2}{T2}[/tex]

Making V2 as the subject formula, we have;

[tex] V_{2}= \frac{V1}{T1} * T_{2}[/tex]

[tex] V_{2}= \frac{200}{301} * 240[/tex]

[tex] V_{2}= 0.6645 * 240 [/tex]

V2 = 159.48 mL

What is the value for AG at 300 K if AH = 27 kJ/mol and AS = 0.09 kJ/(mol-K)?

O

A. AG = 54 kJ/mol

O

B. AG=-18 kJ/mol

O

C. AG= 0 kJ/mol

O

D. AG = 27 kJ/mol

Answers

Answer:

0 kJ/mol

Explanation:

Step 1: Given data

Enthalpy change (ΔH): 27 kJ/molEntropy change (ΔS): 0.09 kJ/mol.KAbsolute temperature (T): 300 K

Step 2: Calculate the Gibbs free energy change (ΔG)

We can calculate the Gibbs free energy change using the following expression.

ΔG = ΔH - T × ΔS

ΔG = 27 kJ/mol - 300 K × 0.09 kJ/mol.K = 0 kJ/mol

Since ΔG = 0 kJ/mol, the process in not spontaneous nor non-spontaneous.

How many liters of hydrogen are obtained from the reaction of 4.00 g sodium with excess water, at STP?

Answers

Answer:

V = 1.95 L.

Explanation:

Hell there!

In this case, according to the following reaction between sodium metal and water:

[tex]2Na+2H_2O\rightarrow 2NaOH+H_2[/tex]

We can realize that the moles of hydrogen can be calculated by using the initial mass of sodium, its atomic mass (23.0 g/mol) and the 2:1 mole ratio of sodium to hydrogen to obtain:

[tex]4.00gNa*\frac{1molNa}{23.0gNa} *\frac{1molH_2}{2molNa}=0.0870molH_2[/tex]

Finally, we calculate the volume of hydrogen by using the ideal gas equation whereas the pressure is 1 atm and the temperature 273.15 K according to the STP conditions:

[tex]PV=nRT\\\\V=\frac{nRT}{P}\\\\V=\frac{0.0870mol*0.08206\frac{atm*L}{mol*K}*273.15 K}{1 atm}\\\\V=1.95L[/tex]

Regards!

Which reactant is necessary for a combustion reaction?
A. Water
O B. Heat
O c. Carbon dioxide
D. Oxygen

Answers

The reactant necessary for a combustion reaction is oxygen.

(option D).

Combustion is a chemical reaction that occurs when a substance reacts with oxygen, producing heat and light. In order for combustion to take place, three elements are needed: fuel, heat, and oxygen.
Fuel is the substance that undergoes combustion, such as gasoline, wood, or methane. Heat is the energy required to initiate and sustain the reaction. Lastly, oxygen is the reactant that combines with the fuel, allowing it to burn and release energy.
When a combustion reaction occurs, the fuel and oxygen combine to form carbon dioxide (option C) and water (option A). This process is exothermic, meaning it releases energy in the form of heat and light.
For example, when wood is burned in the presence of oxygen, it undergoes combustion. The heat from a match or a spark provides the necessary activation energy to start the reaction. Oxygen from the air combines with the carbon in the wood, producing carbon dioxide and releasing energy in the form of heat and light.
In summary, oxygen is the reactant necessary for a combustion reaction. It combines with the fuel and releases energy in the form of heat and light.

(option D).

For more such questions on combustion reaction

https://brainly.com/question/13251946

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what things are needed to form a hail storm?​

Answers

Answer:

Hail is a type of precipitation, or water in the atmosphere. Hail is formed when drops of water freeze together in the cold upper regions of thunderstorm clouds. These chunks of ice are called hailstones. Most hailstones measure between 5 millimeters and 15 centimeters in diameter, and can be round or jagged.

Explanation:

Other Questions
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