Answer:
305.88 g
Explanation:
4 Al + 3 O₂ → 2 Al₂O₃
First, we convert 6 moles of aluminum (Al) into moles of aluminum oxide (Al₂O₃), using the stoichiometric coefficients:
6 mol Al * [tex]\frac{2molAl_2O_3}{4molAl}[/tex] = 3 mol Al₂O₃
Finally we convert 3 moles of aluminum oxide into grams, using its molar mass:
3 mol Al₂O₃ * 101.96 g/mol = 305.88 g
Help which one will it be
Answer:
D
Explanation:
Answer:
the answer is D I did that one in 5th grade
what is the equivalent weight of sodium trioxocarbonate (IV) in the reaction between Hydrochloric acid and sodium trioxocarbonate (IV)?
Correct answer gets brainliest. This is urgent.
Answer:
Standard acid-base reaction in two stages:
Na2CO3 + HCl → NaHCO3 +NaCl
NaHCO3 + HCl → NaCl + CO2 + H2O
If only a small quantity of acid is added (and the overall solution remains above pH 7), the reaction would stop at stage 1 and you’d be left with an aqueous solution of sodium chloride and sodium bicarbonate. Adding more acid would lead to the bicarbonate being converted to carbon dioxide and water, with the CO2 coming out of solution as a gas and more sodium chloride being produced.
Describe a dinner you would like to eat that includes all the main nutrients, but is low in the nutrients that you should limit.
Dinner including grilled chicken,roasted brussels sprouts and cooked quinoa have all main nutrients and are low in carbohydrates.
What are carbohydrates?
A carbohydrate is defined as a bio-molecule which consists of carbon,hydrogen and oxygen atoms which are usually in the ratio of 2:1 with the empirical formula C[tex]_n[/tex](H₂O)[tex]_n[/tex].
This term is most commonly used in biochemistry as a synonym of saccharide which is a group of sugars, starch and cellulose.
They perform various functions in living organisms. They serve as an energy source and as well as structural components . They are a key component in providing nutrition and are found in wide variety of natural as well as processed foods.
Carbohydrates occur as cellulose in the cell walls of plants and is one of the components of insoluble dietary fibers.
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Which of these is an example of a hypothesis?
HELP ASAP
Answer:
C. Temperature changes may be due to wind patterns.
Explanation:
A hypothesis is an attempt to explain why something happens. The other answer choices are different parts of the scientific method.
"A" is part of the experiment or procedure.
"B" is part of the experiment or procedure.
"D" is a question that may lead to a hypothesis.
Only C offers a potential testable explanation for a phenomenon.
Answer:
the answer is C: temperature changes may be due to wind patterns.
Classify the following as a chemical or
physical property:
Aluminum is a shiny, silver color.
chemical
physical
Answer:
physical
Explanation:
What is the answer
A. North
b. South
C.east
D west
Sandra pushed a wooden block and it slid across the floor. The wooden block gradually slowed down and stopped after moving 10 meters.
Why did the block stop moving?
Answer:
Because it lost momentum!
Explanation:
Hope this helps! Plz mark brainliest! :)
Around what pH are most of the substances in your body? Why?
Answer:
The pH scale measures how acidic or alkaline — basic — something is. Your body works constantly to carefully control pH levels of blood and other fluids. The body's pH balance is also called the acid-base or acid-alkaline balance. The right pH levels are needed for good health.
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Nasha left a hot bowl of soup in a cool room. Her friend tells her that her soup will get cold if she forgets to eat it. How cold could it get?
Answer:
The temperature of soup will decrease.
The soup will get as cold as the room temperature.
The temperature of soup will decrease. The soup will get as cold as the room temperature.
What is room temperature?Room temperature is a range of air temperatures that most people prefer for indoor settings.
Room temperature is defined differently in different places. It generally refers to a range somewhere between 68 and 74 degrees Fahrenheit.
The temperature of soup will decrease. The soup will get as cold as the room temperature.
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the cl-cl bond will react more readily, because it has a
The Cl-Cl bond will react more readily because it has a lower bond energy than the C- H bond.
What is bond energy?The bond energy refers to the energy required to break the bonds that links two atoms together in a molecule. It is equal to the energy that is evolved when the bond is formed.
In comparing the Cl-Cl bond with the C-H bond, we will find out that the Cl-Cl bond will react more readily because it has a lower bond energy than the C- H bond.
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A neutral solution has what ratio of [H+] and [OH-] ions?
19 What is the "skin" of the cell?
Answer:
d cell membrane:)
Explanation:
what are 5 functions of proteins
I need help, decreases or increases
Answer:
increase
Explanation:
how much is the mass of a man if
he has to do 2500 joules of work in
climbing a tree 5 meters tall
Answer:
50kg
Explanation:
Using the formula for potential energy, which is the amount of energy due to position;
P.E = m × g × h
Where;
m = mass (kg)
g = acceleration due to gravity (10m/s²)
h = height (metres)
According to the information provided in this question, m = ?, P.E = 2500J, h = 5m
Using P.E = m × g × h
m = P.E/gh
m = 2500/(5 × 10)
m = 2500/50
m = 50kg
The mass of the man is 50kg.
Predict the products
Answer:
1. No reaction.
2. ZnCl₂ + H₂
3. CaCl₂ + H₂
Explanation:
1. Cu + HCl —> ___
From the reactivity series of metals, H is higher that Cu in the series and so, Cu can not displace H from solution.
Therefore, no reaction will occur.
2. Zn + HCl —> ___
Zn is higher than H in the activity series so, it will displace H from acid solution to produce hydrogen gas, H₂.
The balanced equation is given below:
Zn + 2HCl —> ZnCl₂ + H₂
3. Ca + HCl —> ___
Ca is higher than H in the activity series so, it will displace H from acid solution to produce hydrogen gas, H₂.
The balanced equation is given below:
Ca + 2HCl —> CaCl₂ + H₂
Predict the products:
Ni + KCl →
o Nickel chloride and potassium forms
o Hydrochloric acid forms.
o Potassium Nickel Chloride forms.
o No reaction occurs.
Explanation:
Ni + 2KCl → 2K + Nicl2
It form
potassium and nickel chloride.
Why wasn't the water pasteurized? I chose Claim 1: If you follow the instructions, the POW kits will always heat the water above the correct temperature for pasteurization (65°C), but some people didn't follow the instructions Can someone help me support it?
Answer:
Claim 1- The evidence that supports my claim because Evidence Card b says “One man got sick, but his two children did not. He used water from Whip River. He used the cube to heat the first pitcher of water, which he gave to his kids, and then reused the cube without reheating for the second pitcher, which he drank himself.” My first piece of evidence is that if you don't follow thee directions then something bad would happen
Explanation:
How many moles of PbCl2 are produced
if 14 moles of AlCl3 are consumed?
3Pb(NO3)2 + 2AlCl3 + 3PbCl2 + 2A1(NO3)3
Answer:21 moles of PbCl2 formed
Explanation: 3Pb(NO3)2(aq) + 2AlCl3(aq) --> 3PbCl2(s) + 2Al(NO3)3(aq)
14 moles AlCl3 x 3 moles PbCl2/2 moles AlCl3 =21 moles of PbCl2 formed
The number of moles of PbCl₂ produced when 14 moles of AlCl₃ are consumed in the reaction is 21 moles
Balanced equation3Pb(NO₃)₂ + 2AlCl₃ —> 3PbCl₂ + 2Al(NO₃)₃
From the balanced equation above,
2 moles of AlCl₃ reacted to produce 3 moles of PbCl₂.
How to determine the mole of PbCl₂ producedFrom the balanced equation above,
2 moles of AlCl₃ reacted to produce 3 moles of PbCl₂.
Therefore,
14 moles of AlCl₃ will react to produce = (14 × 3) / 2 = 21 moles of PbCl₂.
Thus, 21 moles of PbCl₂ were obtained from the reaction.
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At what temperature would the volume of a gas be equal to 45.7 L, if the volume of that gas was 33.9 L at 12.4ºC? 241.9 K 241.9 K 451.2 K 451.2 K 384.7 K 384.7 K 273.15 K
Answer:
The temperature will be 384.7 K
Explanation:
Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is maintained at a constant pressure, by means of a constant of proportionality that is applied directly. For a given sum of gas at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases because the temperature is directly related to the energy of the movement of the gas molecules. .
In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:
[tex]\frac{V}{T} =k[/tex]
Having an initial state 1 and a final state 2, the following is true:
[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]
In this case:
V1= 33.9 LT1= 12.4 C= 285.4 K (being 0 C= 273 K)V2= 45.7 LT2= ?Replacing:
[tex]\frac{33.9 L}{285.4 K} =\frac{45.7 L}{T2}[/tex]
Solving:
[tex]T2=45.7 L*\frac{285.4 K}{33.9 L}[/tex]
T2= 384.7 K
The temperature will be 384.7 K
which has the strongest intermolecular forces
Answer:
I think it is B
Explanation:
Answers: A
Explanation: just took the quiz on usatestprep
*
The prevailing weather patterns of a region
Answer:
noun. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. a region or area characterized by a given climate: to move to a warm climate.
Explanation:
Identify the mystery metal using the formula for density (Density = Mass/Volume). The object has
a mass of 95 g and a volume of 4.9 cm3.
O Silver 10.5 g/cm3
O Mercury 13.5 g/cm3
O Gold 19.3 g/cm3
O Copper 9.0 g/cm3
What are the 4 limiting factors
It’s in the image~
Answer:
I'm pretty sure you have it correct
Calculate: A. Mercury has a specific Heat Capacity of 0.14 J/goC. How much heat is needed to raise the thermometer temperature 15 oC to 95 oC. There is 5 g of mercury in the thermometer.
Answer:
[tex]\boxed {\boxed {\sf 56 \ Joules}}[/tex]
Explanation:
We are given the mass, specific heat, and temperature, so we must use this formula for heat energy.
[tex]q=mc \Delta T[/tex]
The mass is 5 grams, the specific heat capacity is 0.14 Joules per gram degree Celsius. Let's find the change in temperature.
ΔT= final temperature - initial temperature ΔT= 95°C - 15°C = 80°CWe know the variables and can substitute them into the formula.
[tex]m= 5 \ g \\c= 0.14 \ J/ g \ \textdegree C \\\Delta T= 80 \ \textdegree C[/tex]
[tex]q= (5 \ g )( 0.14 \ J/ g \ \textdegree C ) ( 80 \ \textdegree C)[/tex]
Multiply the first numbers. The grams will cancel.
[tex]q= 0.7 \ J/ \textdegree C(80 \ \textdegree C )[/tex]
Multiply again. This time the degrees Celsius cancel.
[tex]q= 56 \ J[/tex]
56 Joules of heat are needed.
I’ll really appreciate it if you help me out on this one .
Answer:
i'd say D
Explanation:
the dependent variable is the change that happens
Pls answer I will mark brainiest!!!
Look at the dots around each symbol and the energy levels from the resources above
Be specific with your responses for each question. Your teaching the reader via answers!
Please answer the following questions:
Why does Na(sodium) have only one dot?
Why do none of these diagrams show more than 8 dots?
What relationship do you notice between the dots in these two charts?
The number of dots that hydrogen and helium have in their dot diagram is the same as the number of electrons shown for them on the Periodic Table. Why? (Hint: OCTET RULE)
Hi! I'd love to help you if I can. Is there a picture that was provided? I'm sure I can assist you, but there seems to be some missing information.
why is nuclear a good energy source?
Answer
well it gets used
Explanation:
because it generates power through fission
gold has a density of 19.32 g/cm3 if you cut a piece of gold in half how much will the density of each piece be?
Answer:
19.32 g/cm³
Explanation:
The density will remain the same no matter how many times you cut the gold. The density is g/cm³ or g/mL. Density is essentially how many grams 1 mL of a compound weighs.
Answer:
[tex]\boxed {\boxed {\sf 19.32 \ g/cm^3}}[/tex]
Explanation:
Density is the mass per volume (g/mL or g/cm³). It is an intrinsic property. This means it is not dependent on the amount and all samples of the same substance have the same density.
Therefore, if a piece of gold has a density of 19.32 grams per cubic centimeter and it is cut in half, the two pieces will have the same density.
due in a bit! please help tysm btw!
Answer:
Unbalanced
Explanation: