Please help me, Thank you!
how many moles of Al2O3 will be produced if 1.35 moles of Fe are produced?
Answer:
0.675 mol
Explanation:
Step 1: Write the balanced equation
2 Al + Fe₂O₃ ⇒ 2 Fe + Al₂O₃
Step 2: Establish the appropriate molar ratio
According to the balanced equation, the molar ratio of Fe to Al₂O₃ is 2:1.
Step 3: Calculate the moles of Al₂O₃ produced when 1.35 moles of Fe are produced
We will use the established molar ratio.
1.35 mol Fe × 1 mol Al₂O₃/2 mol Fe = 0.675 mol Al₂O₃
Which intermolecular force would affect the boiling point the least?
Answer: Van der Waals forces
Explanation: trust me i tried the other dudes answer and I got it wrong.
The intermolecular force that would affect the boiling point the least is ionic bonding. The correct option is C.
Strong electrostatic interaction between ions that are positively and negatively charged is referred to as ionic bonding.
It takes place when two atoms with vastly differing electronegativities are in close proximity to one another, leading to the transfer of electrons from one atom to another to create ions.
Although ionic compounds have high melting and boiling temperatures, intermolecular forces are less important than the strong attraction between the ions in the solid state.
In contrast, neutral molecules or atoms experience intermolecular forces such as hydrogen bonds, dipole-dipole interactions, and Van der Waals forces (which include dispersion forces).
The boiling points of substances are greatly influenced by these factors.
Thus, the correct option is C.
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Probability can be used
Answer:
How likely something is to happen.
If a 10 kg stone falls from a height of
30 m, what is the velocity of the stone
as it hits the ground?
Answer:
26.32 because z easy
Explanation:
Answer:
26.32 because z easy
Explanation:fds
Answer:
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Explanasetion:sf
26.32 because z easy ef
Explanation:
Answer:ds
26.32 because z easy
Explanation:
hbdshfiushyAnswer:
26.32 because z easy
Explanation:
Answer:
26.32 because z easy
Explanation:fds
Answer:
26.32 becfdseefdause z easy
Explansefdsefdsefdsenfuystyegfsvfgvsfhs76ieu4fguyhgvrykes4rjehrfgehg4fuebecause z easy
Explanasetion:sf
26.32 because z easy ef
Explanation:
Answer:ds
26.32 because z easy
Explanation:
hbdshfiushy
Answer these to get 75 points
Answer:
2. waves
3. True
4. the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.
5. Frequency is the number of occurrences of a repeating event per unit of time.
6. slow, fast
7. left to right
8. The maximum displacement or distance moved by a point on a vibrating body
9. No
10. radio waves, and microwave.
11. tv uses electromagentic waves while light uses electromagenti radition.
Explanation:
What is the heliosheath?
Answer:
The heliosphere is the vast, bubble-like region of space that surrounds and is created by the Sun.
Balance the following equations
Al + Cl2 AlCl3
Ag2O + Be Ag + BeO
K + O2 K2O
CoP + NaBr CoBr3 + Na3P
Si + Hg2S SiS2 + Hg
Li + Ni3N2 Li3N + Ni
Ca + K3N --> Ca3N2 + K
SnS2 + F2 --> SnF4 + S
Answer:
Explanation:
2Al + 3Cl2 --> 2AlCl3
Ag2O + Be -----> 2Ag + BeO
4K + O2 ---> 2K2O
CoP + 3NaBr ---> CoBr3 + Na3P
Si + Hg2S ---> SiS2 + Hg
6Li + Ni3N2 --- > 2Li3N + 3Ni
3Ca + 2K3N --> Ca3N2 + 6K
SnS2 + 2F2 --> SnF4 + 2S
A supercomputer, nicknamed Roadrunner, built by IBM for the Los Alamos National Labs can perform about 1.03 petaflop/s (1 petaflop is 1015 calculations). Determine how many seconds it would take this computer to count a mole of things. Convert this figure into years.
Answer:
18.5 years
Explanation:
(6 x 10^23)/(10^15 x 1.03 x 3600 x 24 x 365)
Hope this helps!
Which of the following is NOT a property of metals associated with metallic bonds?
what are the following things
Metals are good conductors and shows some peculiarities such as luster, ductility, malleability,etc. Brittleness is not associated with metals since they are hard. Hence option A is correct.
What is metal?Metals are electropositive elements with good conductivity. Metals are classified into the s block and d block of periodic table. Thus alkali metals, alkaline earth metals and transition metals are the classes of metals.
Metals are rich in free electrons thereby, they capable of conducting electrically and thermally. Other features that metals have , they are hard and not brittle. Metals are malleable and ductile.
Malleability is the property by which it can be pressed into different shapes easily without cracking. Ductility means they can be plastically deformed into thin wires without fracture.
Metals are shining and this property is called lustrous. Hence all the properties such malleability, ductility and luster are features of metals but they are not brittle. Hence option A is correct.
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Your question is incomplete. But your complete question probably was:
Which of the following is NOT a property of metals associated with metallic bonds?
A Brittleness
B Malleability
C Ductility
D Luster
Which of the following would be an example of Beta decay?
Answer:
si- 26 > Mg22
Explanation:
it is less than what you started with.
Alex's teacher showed him a model of gas particles in a sealed container. How should Alex change the model to show the particles of this gas at a higher temperature?
Answer:
Increased volume of particles in the containergreater vibration of particlesExplanation:
At higher temperature, the particles of the gas would be more active and vibrate more, or even have greater collisions. Alex can indicate this in the altered model to depict higher temperature.
Consequently, Charles law gives meaning to why there would be an increased volume of gas in the stable pressurized container, if the temperature were to be increased.
I hope this explanation was clear and concise?
A vehicle travels 60. km north and then 40. km south. What is its total displacements?
Answer:
20 km north that's the answer hope it helped
Why it is necessary for plants to have chloroplasts?
In your own words, please
Chloroplasts is an important part in the process of photosynthesis in some organisms. The chloroplast absorbs the energy in sunlight and uses it to produce sugars.
The main function of chloroplast in plants is to convert light energy into chemical energy via the photosynthesis process.
What is the role of chloroplasts in plants?Photosynthetic chlorophyll is found in chloroplasts, which catch sunlight and converts it into chemical energy, releasing oxygen from water. All green plants and algae have chloroplasts. Chloroplasts help plants in the formation of food.
Chloroplasts are found in the leaves of the plant's guard cells. Chloroplasts contain a lot of chlorophyll, which helps to trap sunlight. The chloroplast is capable of reproducing without any help from the rest of the cell.
The primary job of chloroplast is to produce food through the photosynthesis process. Chloroplast has a component called chlorophyll, which traps sunlight and is used for food synthesis or sugar and other organic molecules in all green plants. They also form lipid components and amino acids that are required for chloroplast membranes.
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A sample of hydrogen gas at a pressure of 0.926 atm and a temperature of 29.5 C, occupies a volume of 457 mL. If the gas is allowed to expand at constant temperature until its pressure is 0.447 atm, the volume of the gas sample will be ___ mL.
Answer:
V₂ = 946.72 mL
Explanation:
Given data;
Initial pressure = 0.926 atm
Initial volume = 457 mL
Temperature = constant = 29.5°C
Final pressure = 0.447 atm
Final volume = ?
Solution:
The given problem will be solved through the Boyle's law,
Mathematical expression:
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
by putting values,
P₁V₁ = P₂V₂
0.926 atm × 457 mL = 0.447 atm × V₂
V₂ = 423.18 atm. mL/ 0.447 atm
V₂ = 946.72 mL
Calculate the empirical formula of each of the following substances with the following compositions.
a 3.60 g of magnesium and 10.65 g of chlorine
b 9.1 g of lithium and 10.4 g of oxygen
Explanation:
Note: Molar masses of elements can be found online or in the periodic table.
Moles of Magnesium
= 3.60g / (24.3g/mol) = 0.148mol.
Moles of Chlorine
= 10.65g / (35.45g/mol) = 0.300mol.
Mole ratio of Magnesium to Chlorine
= 0.148mol : 0.300mol = 1 : 2.
Hence we have the empirical formula MgCl2.
Moles of Lithium
= 9.1g / (6.94g/mol) = 1.311mol.
Moles of Oxygen
= 10.4g / (16g/mol) = 0.650mol.
Moles ratio of Lithium to Oxygen
= 1.311mol : 0.650mol = 2 : 1.
Hence we have the empirical formula Li2O.
How many strawberries would you need to make 12 smoothies?
Answer: Hey! You need 48 Strawberries to make 12 smoothies.
Explanation: I knew this before but needed to make sure if it's true. So I tested it by myself and got it!
You are very welcome!
You need 84 strawberries to make 12 smoothies.
What is multiplication?Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression for some number of times.
Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.
Given:
Martha needs 28 strawberries to make 4 smoothies.
To make one smoothie,
Martha needs = 28/4 = 7 strawberries.
To make 12 smoothies,
Martha needs = 12 x 7
= 84 strawberries.
Therefore, you need 84 strawberries.
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The complete question:
Martha needs 28 strawberries to make 4 smoothies.
How many strawberries would Martha need to make 12 smoothies?
In addition or subtraction, the result carries the same number of decimal places as the quantity carryi
the fewest decimal places.
Pls help (there is a pic)
calculate the mass of a sample of cobalt containing 3.31x10^22 atoms
Answer:
Mass = 3.24 g
Explanation:
Given data:
Number of atoms of cobalt = 3.31 × 10²² atoms
Mass of cobalt atoms = ?
Solution:
We will calculate the number of moles of cobalt by using Avogadro number.
1 mole contain 6.022× 10²³ atoms
3.31 × 10²² atoms × 1 mol / 6.022× 10²³ atoms
0.549 mol × 10⁻¹
0.0549 mol
Mass of cobalt:
Mass = number of moles × molar mass
Mass = 0.0549 mol × 58.93 g/mol
Mass = 3.24 g
PLSS HELP! The gas carbon dioxide is a pure substance. Which of the following is true about carbon dioxide? (4 points)
a. Carbon and oxygen are chemically bonded in it.
b. Carbon and oxygen retain their original identity in it.
c. It can be separated into carbon and oxygen using physical methods.
d. The proportion of carbon and oxygen is different in different samples of the gas.
Answer:
The answer is option A..
Can you seperate Oxygen molecules from Hydrogen in water?
Group 13 elements tend to acquire which charge when they form ions?
-3
+5
+3
-5
Answer:
-0
Explanation:
What causes lightning? (2 points)
a
Build up of electric charges in the clouds
b
Flow of electric charges among clouds
c
Light energy created in the clouds
d
Reflection of light by the clouds
Answer: As static charge builds up in a storm cloud, the electric field surrounding the cloud becomes ... plasma and the cloud discharges itself to the Earth through a lightning strike. ... These two mechanisms are believed to be the primary causes of the ... The contact point between ground charge and cloud charge rapidly ascends ...
Explanation:The updraft carries the super-cooled cloud droplets and very small ice crystals ... The differences in the movement of the precipitation cause collisions to occur. ... positively charged and the graupel becomes negatively charged (Figure 2). ... but important positive charge buildup near the bottom of the thunderstorm cloud due ...
Answer:
a
Explanation:
What is (3 X 10^3) +(2.5 X 10^6)? *
Answer:
Scientific Notation: 2.503 × 10⁶
Standard Form: 2,503,000
Hey there!
[tex]\mathsf{(3 \times 10^3) + (2.5 \times 10^6)}[/tex]
[tex]\mathsf{= 3 \times 10^3 + 2.5 \times10^6}[/tex]
[tex]\mathsf{10^3}[/tex]
[tex]\mathsf{= 10 \times 10 \times 10}[/tex]
[tex]\mathsf{= 100 \times 10}[/tex]
[tex]\mathsf{\bf = 1,000}[/tex]
[tex]\mathsf{10^6}[/tex]
[tex]\mathsf{= 10 \times 10 \times 10 \times 10 \times 10 \times 10}[/tex]
[tex]\mathsf{= 100 \times100 \times100}[/tex]
[tex]\mathsf{= 10,000\times100}[/tex]
[tex]\mathsf{= \bf 1,000,000}[/tex]
[tex]\mathsf{= 3\times 1,000 + 2.5 \times 1,000,000}[/tex]
[tex]\mathsf{3\times1,000}[/tex]
[tex]\mathsf{\bf = 3,000}[/tex]
[tex]\mathsf{2.5 \times 1,000,000}[/tex]
[tex]\mathsf{\bf = 2,500,000}[/tex]
[tex]\mathsf{3,000 + 2,500,000}[/tex]
[tex]\mathsf{= \bf 2,503,000}[/tex]
[tex]\boxed{\boxed{\large\textsf{Answer: } \mathsf{ \bf 2,503,000 \ or \ 2.503 \times 10^6}}}\huge\checkmark[/tex]
[tex]\large\textsf{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
Given the empirical formula of your compound is CH₂, what is the gram formula mass of the empirical formula?
Answer:
14g
Explanation:
The empirical formula of the compound is CH₂ ;
When we are dealing with compounds the gram formula mass or gram - molecular weight is the molar mass of the compound.
It is determined by adding the atomic masses of the components together and then expressed in grams.
Atomic mass of C = 12
Atomic mass of H = 1
Gram formula mass = 12 + 2(1) = 14g
A solution containing aluminium ions forms a white precipitate when a few drops of dilute sodium hydroxide solution are added to it. For example, sodium hydroxide solution reacts with aluminium sulfate solution. Sodium sulfate solution and solid aluminium hydroxide form. a Write a word equation for this reaction.
Answer:
See explanation
Explanation:
A word equation tries to depict a chemical reaction in words. Letters rather than only chemical formulas are used to show the reaction equation.
Now we want to write a word equation that shows the reaction of sodium hydroxide solution and aluminium sulphate solution:
Alumunium sulphate + sodium hydroxide ------>Aluminium hydroxide + sodium sulphate
3. Determine the uses of the following materials:
(b) Bronze (c) Sulphur
ed
(d) Iodine
(a) Brass
Answer:
D
Explanation:
D
What type of fish is this?
Answer:
Angel Fish!
Explanation:
Answer:
Angel fish, the other person answered first tho.
Explanation:
what is the mass of the of substance in a beaker that contains 19 moles of pbi2
Answer:
8759g
Explanation:
Given parameters:
Number of moles = 19moles
Unknown:
Mass of PbI₂ = ?
Solution:
To solve this problem, we first find the molar mass of PbI₂;
Molar mass of PbI₂ = 207.2 + 2(126.9) = 461g/mol
Mass of PbI₂ = number of moles x molar mass = 19 x 461
= 8759g
