Answer:
3.77 moles of Fe contain 2.27 × 10, 24 as an exponent
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
what are 5 functions of proteins
find the area given rectangle.
The length and and breadth of a rectangle are 3abc³ and 4abc units. The area of rectangle is __ sq.unit .
Answer:
The perimeter of a Rectangle P= 2(l + b)
Area of a Rectangle A = l × b
Iron is extracted from its ore (hematite) in the blast furnace. Which gas is produced as a waste product?
Answer:
CO2
Explanation:
CO2 or carbon dioxide is produced when iron is extracted from its ore. Carbon monoxide Co is used as reducing agent in iron extraction. In this reaction iron ore is reduced to iron and CO is oxidized to CO2 or carbon dioxide which is released in the process. There extraction of iron is redox reaction.
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! :)
What is the un-balanced equation for this
reaction?
Mg +0 --> Mgo
Mg + 02
--> Mg02
Mg + 02 --> Mgo
Answer:
2Mg + O2 → 2MgO
Explanation:
How many moles of O2 are produced in the decomposition of 24 g of water in the
following reaction?
2H20 - 2H2 + O2
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.
Which organelle in cytoplasm is responsible for carrying hereditary information?
Answer:
Nucleus
Explanation:
The nucleus serves as the cells command center, sending direction to the cell to grow, mature, divide, or die
Classify the following as a chemical or
physical property:
Aluminum is a shiny, silver color.
chemical
physical
Answer:
physical
Explanation:
Which equation represents a neutralization reaction?
Answer: The equation represents a neutralization reaction is HNO3(aq) + KOH(aq) → KNO3(aq) + H2O(). The answer is letter C.
Answer:
The answer is C.
Explanation:
Edge2021
You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a
sandwich. If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly,
what is the limiting reactant?
Answer:
peanut butter
Explanation:
because you have 10 pieces of bread, 4 tbs of peanut butter, and 20 tbs of jelly, meaning you can make 5 sandwwitches with the bread, 4 sandwitches with the peanut butter, and 10 sandwitches with the jelly. so you dont have enough peanut butter to make all the sandwitches
According to the given scenario, If one have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, the limiting reactant will be peanut butter.
What is a limiting reactant?
The reactant that gets consumed first in a chemical reaction and result in limiting the formation of product is referred to as a limiting reactant.
According to the given scenario, the quantity of peanut butter will get consumed first so it will act as a limiting reactant.
Thus, If one have 10 pieces of bread, 4 tablespoons of peanut butter, and 20 tablespoons of jelly, the limiting reactant will be peanut butter.
For more details regarding limiting reactant, visit:
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Guys I need ur help I might as well just ask ur smarties for help ahah n yup I’ll be brainlisting;)
1) What have been the wider effect on the community of nuclear accidents? (Chernobyl)
Answer:
Hey sis
will you be my sis??
please give reply
I will be waiting
and fol.low.me
What is the molarity of NaOH if 300.mL of
5.00M HCl is titrated with 200.mL of NaOH?
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.
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.
Help which one will it be
Answer:
D
Explanation:
Answer:
the answer is D I did that one in 5th grade
What are chemical formulaes?
give your own response!!
Answer:
is a way of presenting information about the chemical proportions of atoms
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
how many moles of MgO can be made from 10 moles of fe2O3?
Answer:
Fe 2 O3 .
Explanation:
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
HELP PLEASE || TEN PTS WILL MARK BRAINLEST ||Reaction B could produce a substance with a pH of...
Group of answer choices
4.
14.
10.
7.
Answer:
the answer is 4
Explanation:
i took the test and got it right and i would recommend using quizlet it has these flash cards and the answers are there you just click on the one that says your question and it will say your answer on the back. It helps with most of my test! Hope this helps (:
I need help, decreases or increases
Answer:
increase
Explanation:
Please help asap!
Subject: science
I just need some easy answers :)
Answer:
help with what? Let me know in the comments! :)
Explanation:
19 What is the "skin" of the cell?
Answer:
d cell membrane:)
Explanation:
What is the answer
A. North
b. South
C.east
D west
The diagram shows the different models of the atom that eventually led to the modern atomic theory.
Which model was proposed as a result of Rutherford's scattering experiment where positive particles did not pass straight through a foil as expected? (5 points)
Model A
Model B
Model C
Model D
Answer:
B.
Explanation:
The atomic model represents the position of the sub-atomic particles. Model A was proposed after Rutherford's scattering experiment where the positive particles were deflected in the middle. Thus, option A is correct.
What was Rutherford's atomic model?Rutherford's atomic model proposed the presence of the positive nucleus in the middle of the atom while the electrons surrounded them in their orbitals with a negative charge.
He performed the scattering experiment where alpha particles emitted by the radioactive element were used to locate the positions of the electrons, neutrons, and protons.
According to the experiment, model A, best fits as the nucleus made of protons and neutrons takes the center of the atom with negative electrons surrounding them. The nucleus is small as compared to the entire atom.
Therefore, option A. model A best proposes Rutherford's model.
Learn more about Rutherford's model here:
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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:
Difference girteen tungsten and nichrome
Answer:Tungsten is made of tungsten while Nichrome is made of nickel chromium. ... Tungsten is used to make filament of bulbs. Nichrome have high resistivity than tungsten.
Explanation:i hope u have a wonderful night and stay safe
due in a bit! please help tysm btw!
Answer:
Unbalanced
Explanation: