Answer:
Part 1: 229.95g
Part 2: 598.5g
Part 3: 12.6g
Explanation:
Note: I learned this last week. Answer not sure.
Pls tell me if i got it right or wrong.
Mg + HCl - > MgCl2 + H2
First, balance the equation.
There is only 1 H and 1 Cl at the left side. BUT there are 2 Cl and 2 H at the right side. So you can add a 2 in front of HCl to balance it.
Mg + 2HCl - > MgCl2 + H2
Formula 1: (n= m/mr)
n = moles, m= mass, mr = molecular mass
Formula 2: (n= v/24)
v = volume
Part 1
What mass of HCl is consumed by the reaction of 3.15 mol of magnesium?
Ratio of
(look at the number in front of each)
2HCl : Mg
2 : 1
(3.15 x 2) : 3.15 moles
6.3 moles : 3.15 moles
So 2HCl has 6. 3 moles
Now use formula 1 (n = m/mr)
Calculate molecular mass of HCl
Check your periodic table
mr of HCl =(1 + 35.5) = 36.5
6.3 = m/36.5
m = 229. 95grams
Part 2
What mass of MgCl2 is produced? Answer in units of g.
Ratio of
2HCl : MgCl2
(1 +35.5) : (24+35.5x2)
36.5: 95
229.95g :?
229.95g : 598.5g
m = 598.5g
Part 3
What mass of H2 is produced? Answer in units of g.
2HCl : H2
36.5 : 2
229.95g :?
229.95g : 12.6g
m = 12.6g
These organs are just containers for air?
Respiratory system
help me plz i’ll give extra points
What is the solvent in a salt solution like
brine?
Answer:
in a salt solution, water is the solvent. during dissolving, particles of solvent collide with particles of solute. they sorround the particles of solute, gradually moving them away until the particles are evenly spread through the solvent.
Explanation:
HOPE IT HELPS PO(◍•ᴗ•◍)❤
Define unknown solutions
Answer:
A titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution. Typically, the titrant (the know solution) is added from a buret to a known quantity of the analyte until the reaction is complete
A wavelength with a frequency of 14 HZ has a wavelength of 3 meters at what speed will this wave travel
Answer:
The speed will be 42 m/s
Explanation:
Wavelength is the minimum distance between two points on the wave that are in the same state of vibration. In other words, in a periodic wave the wavelength is the physical distance between two points from which the wave repeats.
Frequency (f) is the measure of the number of cycles or repetitions of the wave per unit of time. That is, it is the number of vibrations that occur in a unit of time. That is, how many peaks or valleys are repeated in a unit of time. If the unit of time is one second then the frequency is measured in Hertz (Hz).
The wavelength (λ) and the frequency (f) are two inversely proportional parameters and related by the propagation speed. The speed of propagation is the speed with which the wave travels, it is represented by the letter "v". The equation that links these three parameters is v = f * λ.
In this case:
f= 14 Hzλ= 3 mReplacing:
v= 14 Hz* 3 m
Solving:
v= 42 m/s
The speed will be 42 m/s
Calculate the density (g/ml) of mineral that has volume (total space occupied by something) of 3.8 ml and a mass of 22.4 g.
A- 5.9 g/ml
B- 85.1 g/ml
C- 0.17 g/ml
D- 26.2g/ml
Answer:
D
Explanation:
How many minutes are in 180,0 days?
Answer:
259,200 minutes
Explanation:
how many grams are in 7.4 moles of HgS?
Answer: 1721.6 grams
Explanation:
Five moles of trucks would be____trucks.
Answer:
3.02x10²⁴
Explanation:
To solve this problem we need to use Avogadro's number: It is the number of units (usually atoms or molecules, in this case it's trucks) contained in one mol: 6.023x10²³.
We multiply the given number of moles times Avogadro's number:
5 * 6.023x10²³ = 3.02x10²⁴
So five moles of trucks would be 3.02x10²⁴ trucks.
If the object is falling under the influence of gravity alone, this is called?
Answer: gravitational energy
Explanation: If you have a book on a table and it might fall, its using gravitational energy because its depending on gravity to choose rather it will fall or just balance. It also depends on how high the object is off the ground
What is the maximum number of electrons that an S orbital can have?
1 electron
2 electrons
4 electrons
3 electrons
List the primary consumers in the food web please help
Answer:
Giraffe, rhinoceros, grasshopper, mouse, and deer
Explanation:
Primary consumers eat producers (plants). Therefore, all the animals that eat the plants are primary consumers.
Answer:
cricket, mouse, snake, bird
Explanation:
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Which of the following is the best representation of a heterogeneous mixture ?
A; sand and water
B; perfume
C; Gatorade
D; koolaid and water
Answer:
a)
Explanation:
1. What is a food web?
A group of animals
a food chain with two levels
A producer and consumer relationship
how several food chains are related
Answer:
a producer and consumer relationship how several food chains and related.
Answer:
The answer is:
Explanation:
A food chain with two levels.
Hope this helps!!
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:)
can someone please help me with this question for chemistry. What is the number of moles in 1216 g Sr3(PO4)2? the 3,4, and 2 and small numbers that go under the letters btw
What is the chemical formula for Tetrasulfur pentoxide?
Answer:
S 4 O 5
Explanation:
the 4 and 5 are little
How many liters are in 100g of CoCl2
Is it 579.60L
is it 29.08 L
Is it 23.73 L
Is it 17.25 L
Answer:
17.25 L
Explanation:
I converted 100g into moles and converted the amount of moles into L.
1 mole is equal to 6.023 × 10 ²³ molecules.17.25 Liters are in 100 grams of COCl₂. Therefore, option D is correct.
What do you mean by mole ?The term mole is defined as the amount of substance of a system which contains as many elementary entities.
One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.
The mole concept can be used to convert between mass and number of particles.
1 gram of COCl₂ = 0.00770 mole
100 gram COCl₂ = 0.770 mole
To convert gram into litre multiply by 22.4
= 0.770 × 22.4
= 17.25 Litre
Thus, 17.25 Liters are in 100 grams of COCl₂, option D is correct.
To learn more about the mole, follow the link;
https://brainly.com/question/26416088
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Which set of data is more precise?
O 1, 2, 1, 2
O 1,1.5, 1.5, 1
O 0.5, 1, 2,1.5
O 1, 2, 2, 1.5
Answer:
01,1.5,1.5,1
Explanation:
What is the role of an electron in an atom?
Electrons live inside the nucleus and carry a neutral charge.
Electrons circle the nucleus and have a positive charge.
O Electrons determine the reactivity of an atom.
Electrons act like a glue to hold the nucleus together
Answer
Electrons live inside the nucleus and carry a neutral charge.
Explanation:
What is the name of this isotope? P-17 N-22
Answer:Chlorine
Explanation:
This isotope is Chlorine because an atom with 17 protons will always be chlorine, just as an atom with 1 proton will always be hydrogen, for example
takes Mrs. Pare' three hours to drive 175 miles from her house in Pennsylvania to her house in Maryland. What is her average speed?
Answer:58.33mph
Explanation:
What is the phenotype of a plant with the genotype RR?
Red
White
O
Pink
Answer:
This question is incomplete, but it can be answered based on general knowledge of the topic. The answer is RED
Explanation:
This question is describing a gene that codes for color. The allele for red color is R while that of white is r, however, these two alleles exhibit incomplete dominance to form an intermediate phenotype that is PINK (Rr).
Since the heterozygous is pink color, it will take two red alleles to make a plant phenotypically red i.e RR. Note that, genotype "rr" will be white.
What is the difference between hydrogen-2 and hydrogen-3?
A. Hydrogen-3 has one more neutron
B. Hydrogen-2 has 2 neutrons.
C. Hydrogen-2 has 4 protons.
D. Hydrogen-2 has no protons.
Please help!! I'll name you brainliest!!
Answer:
H20 Covalent bond
Kl Ionic bond
NaBr ionic bond
Co2 Covalent bond
MgCl2 ionic bond
HCl Covalent bond
Explanation:
Which characteristic describes the traposphere
Answer:
It is the wettest layer of the atmosphere.It extends upto 10km upward from sea level.
What was Rutherford's model of the atom missing?
Answer:
The Rutherford atomic model stated that an atom is mostly an empty space that consist of nucleus and electrons, where nucleus is positively charged and electrons are negatively charged.
But Rutherford atomic model missed to add the quantum mechanics or energy level for electrons. Rutherford was unable to make understand the planetary movement of electrons around nucleus and later Bohr's model explained it.
Hence, Rutherford's model of the atom missed to explain the planetary movement of electrons around nucleus.
Are substances that taste bitter and feel slippery to the skin
Answer:
Explanation:
Bases are the substances which have a bitter taste and feel slippery.Sulfuric acid is the most widely made industrial chemical in the world. It is used to make many products, including paper, paint, detergents, and fertilizers. Car batteries contain sulfuric acid. Feel The properties of a base solution include a bitter taste and a slippery feel.Plz help thank you!!!
Answer:
1. Covalent Bond
2. Ionic Bond
Explanation:
Covalent bonds are defined as the bond in which sharing of electrons takes place between atoms. The sharing of electrons is in equal number so that it form a stable balance of attraction and repulsion between atoms. In the given example of CO2 (first image) oxygen is sharing equal number of electrons with carbon to form a stable bond called covalent bond.
Ionic bonds are formed when valence electrons are transferred to other atoms and form oppositely charged ions. In ionic bond formation, the atoms that gain electrons become negatively charged and the atoms that loses electrons become positively charged. In the given example of Ca Cl2, Ca is also giving its 2 valence electrons to each Cl and there is no stable balance of attraction and repulsion between atoms.
Hence, the correct answer is:
1. Covalent Bond
2. Ionic Bond
2C3H7OH + 9O2 -> 6CO2 + 8H2O
How Many Moles of CO2 can be produced by reacting 6 moles of C3H7OH with oxygen?
Answer:
Up to [tex]18\; \rm mol[/tex] [tex]\rm CO_2[/tex].
Explanation:
The equation for this reaction: [tex]2\; \rm C_3 H_7 OH + 9\; O_2 \to 6\; CO_2 + 8\; H_2O[/tex] is indeed balanced.
Notice that the coefficient of [tex]\rm C_3 H_7 OH[/tex] is [tex]2[/tex] while that of [tex]\rm CO_2[/tex] is [tex]6[/tex].
Therefore, each unit of this reaction would consume [tex]2[/tex] units of [tex]\rm C_3H_7OH[/tex] while producing [tex]6[/tex] units of [tex]\rm CO_2[/tex]. In other words, this reaction would produce three times as much [tex]\rm CO_2\![/tex] as it consumes [tex]\rm C_3H_7OH\![/tex].
If all that [tex]6\; \rm mol[/tex] of [tex]\rm C_3H_7OH[/tex] molecules are actually consumed through this reaction, three times as many [tex]\rm CO_2[/tex] molecules would be produced. That corresponds to [tex]3 \times 6\; \rm mol = 18\; \rm mol[/tex] of [tex]\rm CO_2\![/tex] molecules.