Answer: 2483 miles/hour
Explanation:
[(1 mile/1609 meters) = 0.0006215 miles/meter]
(1110meters/sec)*(0.0006215 miles/meter)*(3600 secs/hour) = 2483 miles/hour!
Note how the units cancel to yield miles/hour. Use the units to determine what conversion factors are needed. We know that the final unit was to be miles/hour, so we converted meters into miles (firsy line) so that the meters would cancel, leaving only miles. Same for seconds and hour (3600 secs/hour).
If 2.0 g of hydrogen gas combines with an excess of chlorine gas to form 72.9 g of hydrogen chloride, what mass of chlorine is used in the reaction?
Explanation:
Eqn of Reaction
H2 + Cl2 == 2HCl
Mass of HCl=72.9g
Mass of H2 = 2.0g.
Moles of HCl = Mass/Molar Mass
n = 72.9/36.5
n=1.997 moles of HCl was produced.
Now from the balanced eqn of reaction...
2moles of HCl is produced when 1moles of Cl2 reacts.
So
1.997moles of HCl would produce.....
1.997 x 1/2 moles of Cl2
0.999moles of Cl2 is gotten.
n(Cl₂) = mass/Mm
Mass = Mm x n
n=0.999moles
Molar Mass(Mm)= 35.5 x 2= 71g/mol ( You multiply by 2 cuz Chlorine is a diatomic gas).
Mass = 0.999 x 71
Mass = 70.929g of Chlorine.
An easier and swifter way to look at this is
From the Law of Conservation Of Mass.
The Mass of reactants MUST equal those of products in a simple chemical reaction since Matter is neither created nor destroyed in this scenario.
So The product Was 72.9g of HCl
Therefore
The Sum of both reactants Must equal this value.
We're already given the value of H₂ =2g
Therefore...
Chlorine should be undoubtedly 70.9g.
Hope this helps.
Have a great a day Amigo✅
What happens to the molecules of a compound when it changes state from liquid to solid
Answer:
they lose energy. because of that, they slow down and get closer together
EASY QUESTIONS Need answers for both questions
Answer: I can’t really see the question sorry it’s to blurry
Arrange the ions from largest to smallest.
Se^2-, Sr^2+, As^3-, Br^-, Rb^+
Answer:
As^3-, Se^2-, Br^-, Rb^+, Sr^2+
Explanation:
A rabbit has a mass of 2kg. What is its weight
Answer:
weight = Mass × gravity
P= m × g
P=mg
Weight (P) = ? , Mass (m) = 2 kg , gravity (g) = 9.8 m/s²
P= mg
p = 2 × 9.8
P= 19.6 kg.m/s²
P= 19.6 N
I hope I helped you^_^
what is the relationship between temperature and kinetic energy
For a given gas
[tex]\boxed{\sf E\propto T}[/tex]
[tex]\\ \sf\longmapsto \dfrac{\epsilon_1}{\epsilon_2}=\dfrac{T_1}{T_2}[/tex]
E=energyT=TemperatureWhat structural feature of the vanilloid compounds is responsible for their very different flavors?
The structural feature responsible for the different flavors of vanilloids is the presence of the vanillyl function group such that they are able to bind with transient receptor type 1 (TRPV1) channels and act as an agonist
Reason:
Vanilloid compounds include acetovanilon, capsaicin, vanillylmandelic acid,
homovanillic acid. The vanillyl group is functional group of the vanilloids.
The flavor of spicy peppers such as the sensation of burning is due to
binding to the transient receptor type 1 (TRPV1) receptor which is an a
channel that give a response to acid, and high temperature stimuli, by
vanilloid compound such as capsaicin, ovanil, and resiniferatoxin
The agonists of TRPV1 such as resiniferatoxin and capsaicin have the
vanilloid ring. Capsaicin has a long highly lipophilic, aliphatic chain such
that it binds in the intracellular locations to TM3 and TM4 of the TRPV1
channel TM3 and TM4
Therefore, the special feature of the vanilloid compounds that is
responsible for their different flavors, is the presence of the functional the
vanilloid ring and the ability to bind with to the TRPV1 acting as an agonist
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Which of the following contains only one
type of atom?
A. element
B. solution
C. compound
Answer:
A. elements
I hope it's helps you
Answer:
A i think
Explanation:
If the sum of the last
number and the middle
number of three consecutive
integersis is 71, then the
Least (smallest) number
mumber must be
Answer:
number must be 0000.999
The neutrons within the nucleus of an atom have what charge?
A)negative.
B)same as an electron.
C)same as a proton.
D)no charge.
Answer:
the answer is D.
Explanation:
your welcome :)
Answer: D). No Charge
Explanation: The neutrons within the nucleus of an atom have no charge.
what is the chemical equation of combustion of coconut oil
Answer:
2 C6H14 + 19 O2 -> 12 CO2 + 14 H2O.
Explanation:
'.'
and compound is a substance made of two or more chemicals that are chemically joined in a specific combination most matter is formed of ____
Answer:
elements
Explanation:
possibly elements
What is the mole ratio of NH3 to N2?
answers : the mole ratio between NH3 : NH2 is 2:1
Find the mass of an object with 30 cm3 and has a density of 2 g/cm3 (input number only)
formation of a precipitate
formation of gas (without heat)
color change
Answer: 60 g
Explanation: Mass is the product of density and volume.
Density (2 g/cm^3)
Volume (30 cm^3)
(2 g/cm^3)*(30 cm^3) = 60 g
Miranda gets a small cut on her thumb after she breaks a beaker, and she begins to look around for the lab first aid kit.
What important first step should she have taken?
She should have first called 911.
She should have first informed her whole class.
She should have first called a doctor or a nurse.
She should have first notified the teacher.
Answer:
She should have first notified the teacher.
Answer:
D. She should have first notified the teacher.
To scientific notation 5.029m
Answer:
5.029 × 100
Explanation:
How do you do conversion factors?
Answer:
Explanation:
A conversion factor is a number used to change one set of units to another, by multiplying or dividing. When a conversion is necessary, the appropriate conversion factor to an equal value must be used. For example, to convert inches to feet, the appropriate conversion value is 12 inches equal 1 foot. I am so sorry if i am wrong I am new at this
Answer: To create a conversion factor from this equality, write the quantity on one side of the equal sign in the numerator of a fraction, and write the other quantity in the denominator. Note that a second conversion factor could be developed by interchanging where each quantity is written, relative to the fraction bar.
Explanation:
The state of matter in which a material has a definite shape and a definite volume is the _____ state.
liquid
elemental
solid
gas
Answer:
solid
Explanation:
in the solid state the material will has a fixed shape and volume whatever the container that contains it
where in liquid the shape will be different depending on the container
and in gas state the shape and volume are not definite
A 28.98 g piece of gold is put in a 10-mL graduated cylinder, and the water rises 1.50mL.
a. What is the density of gold?
b. You know the density of silver is 10.5 g/mL. What mass of silver would cause the water to rise 1.50mL?
Answer:
a. 19.32 g/mL
b. 15.75 heres the answers
Calculate the force needed to accelerate a 300 kg mass at 5
mls acceleration.
Explanation:
Force=mass *acceleration
F=300*5
f
F=1500N
what is the shape of sf6
Answer:
answer........of the question
Please help!!!!! I will give yall extra points
Answer:
A.
Explanation:
Potassium is a(n)____ metal than zinc
A more active
B less active
C equally active
D heavier
Answer:
Potassium is a more reactive metal than zinc
PLEASE MARK ME BRAINLIESTPotassium and zinc both are chemical elements, where Potassium is a more active metal than zinc. The correct option is A
What are potassium and zinc?
Potassium and zinc both are chemical elements. Potassium is metal and its symbol is K and its atomic number is 19. Its s silver-colored metal. Zinc is a slightly brittle metal and its symbol is Zn and its atomic number is 30.
Potassium is present in food materials, and it is a soft and necessary micronutrient for the body. Zinc is also a micronutrient that is needed in a small amount for the body.
Potassium is an alkali metal and zinc is a transition metal and is present in the center of the periodic table. Alkali metals (potassium) are more reactive than transition metals.
Thus, the correct option is A more active.
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aplicando a lei das proporcoes definidas,calcule a massa do elemento sodio existente em 10 g de sulfato de sodio
Answer:
3.24
Explanation:
em primeiro lugar, você calcula o peso molecular de cada elemento e o multiplica pelo seu número, portanto, se for Na2So4, então multiplicaremos o peso molecular do sódio, que é 23, por 2 e assim por diante. então você terá as proporções de sódio para enxofre para o total, que será de 142. então por multiplicação cruzada definirá o total para 10 e, em seguida, multiplique-o por Na que foi de 46, em seguida, divida-o pelo total que é 142 e então dá a você o sódio em 10 gramas de Na2SO4, que é 3,24.
7.In which state of matter molecules have more energy to vibrate.
Answer:
Solid, liquid or gas. So there is movement no matter the state. The key variable is density. The higher the density the less movement. In solids the motion can be so small it's very hard to measure. Gas on the other hand is easy the motion being large. Bear in mind temperature plays a big role. Higher temps bring faster motion. Finally the pressure of the gas brings about less motion the higher it is as the molecules are closer together & can't move as much.
Explanation:
Why would an atom emit particles or waves from its nucleus?
A. None of these
B. If it has been part of a single replacement reaction.
C. If it has been part of a double replacement reaction.
D. To create a more stable nucleus.
An atom emits particles or waves from its nucleus to create a more stable nucleus. The correct option is D.
What is an atom?An atom is a divisible substance that contains subatomic particles like electrons, protons, and neutrons. The atoms are the smallest unit of matter that made every element. The atom also contains a nucleus, the electrons revolve around the nucleus.
An atom is full of electrons, and when an atom emits energy when an electron changes its level and moves near to the nucleus.
An atom emits a wave or particle to become more stable than before because it lowers its energy. More energy leads to the instability of the atom.
Thus, the correct option is D. To create a more stable nucleus.
Learn more about the atom, here:
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Which of these can be mined from earth and used as an energy source?
A.Get rid of the waste and extra fluid
B.Ureters
C.Coal
D.Bladder
coal
Which of these can be mined from earth and used as an energy source?
A.Get rid of the waste and extra fluid
B.Ureters
C.Coal
D.Bladder
ans is coal
A hose delivers water to a swimming pool that measures 9.0 m long by 3.5 m wide by 1.75 m deep. It requires 97 h to fill the pool. At what rate in liters per minute will the hose fill the pool?
Answer:2
Explanation:
A block of wood that is 3 cm on each side has a mass of 27 g. What is the density of the block? ( using sig figs )
Answer:
desity =mass /volume
27/ 3cube
1g/cm³
Molecules, which have the same chemical formula and bond connectivity but different relative arrangement in three- dimensional space is called
(a) Enantiomers
(b) Stereoisomers
(c) Diastereomers
(d) Constitutional isomers
Answer:
B
Explanation:
Stereoisomers have the same connectivity in their atoms but a different arrangement in three-dimensional space. There are different classifications of stereoisomers depending on how the arrangements differ from one another. Notice that in the structural isomers, there was some difference in the connection of atoms. For example, 1-butene has a double bond followed by two single bonds while 2-butene has a single bond, then a double bond, then a single bond. A stereoisomer will have the same connectivity among all atoms in the molecule.
