When a outside force acts upon it.
Mg + 2HCl ⟶ MgCl2 + H2
How many grams of MgCl2 are produced by 2.55 mol Mg?
Answer: m = nM= 242.8 g
Explanation: amount of MgCl2 is same as n(Mg)
M(MgCl2) = 95.21 g/mol
95.21 g/mol is the mass in grams of MgCl[tex]_2[/tex] are produced by 2.55 mol Mg in the reaction Mg + 2HCl ⟶ MgCl[tex]_2[/tex] + H[tex]_2[/tex].
What is mass?A body's mass is an inherent quality. Prior to the discoveries of the concept of atom as well as particle physics, it was widely considered to be tied to the amount of matter inside a physical body. It was discovered that, despite having the same quantity of matter in theory, different atoms and elementary particles have varied masses.
There are various conceptions of mass in contemporary physics that are theoretically different but physically equivalent. The resistance of the body to accelerate (change of velocity) in the presence of a net force can be measured experimentally as mass. The gravitational pull an object has on other bodies is also influenced by its mass.
m = n×M= 242.8 g
M(MgCl[tex]_2[/tex]) = 95.21 g/mol
Therefore, 95.21 g/mol is the mass in grams of MgCl[tex]_2[/tex] are produced by 2.55 mol Mg in the reaction Mg + 2HCl ⟶ MgCl[tex]_2[/tex] + H[tex]_2[/tex].
To know more about mass, here:
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Circle all that apply for an anion.
a. Positively charged
b. Negatively charged
c. Metal
d. Nonmetal
e. Loses electrons when formed
f. Gains electrons when formed
g. Listed first in a compound
h. Listed second in a compound
Answer:
b. d. f. h
Explanation:
Anions are negatively charged. They are usually non metals with few exceptions. They need to gain electrons in order to form and they are always listed after cation in a compound.
Calculate the number of atoms
in 10.0g of He.
A. 3.83 x 1023
B. 2.41 X 1024
C. 1.51 X 1024
D. 6.02 x 1023
8. If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products? A. 12 atoms of carbon (C) B. 6 atoms of carbon (C) c. 3 atoms of carbon (C) D. 2 atoms of carbon (C)
A. 12 atoms of carbon (C)
B. 6 atoms of carbon (C)
C. 3 atoms of carbon (C)
D. 2 atoms of carbon (C)
Answer
b
Explanation:
Please answer thank you so much!
I went for a walk the other day. I went four blocks east, then seven blocks south, then one block west and finally
eight blocks north
a.What distance did I travel?
b. What's my displacement?
Answer:
a) distance is 4+7+1+8=20 blocks
b) displacement is 10 blocks
Explanation:
find displacement: x and y
x axis displacement = 4-1 = 3 blocks
y axis displacement = -7+8= 1 block
displacement = the square root of 3^2 + 1^2
= 9+1 = 10 blocks.
You can find the angle of displacement with respect to the initial position using trig identities, if you wish.
Convert 17oC to kelvin
Answer:
290
Explanation:
Temperature in kelvin = 273 + Temperature in ⁰C
Answer: °Celsius Kelvin
25.00 298.15
25.01 298.16
25.02 298.17
25.03 298.18
25.04 298.19
25.05 298.20
25.06 298.21
25.07 298.22
25.08 298.23
25.09 298.24
The diagram shows the molecular structure of butane. What is the chemical
formula for butane?
Butane
H
Н
Hн
н—с-с-с-с-Н
|| []
Н н н Н
А. 4C1ОН
В. С4Н10
С. 4CH10
D. HC4H
Answer: B
Explanation: sorry if I'm too late but i just did this question and that was the right answer
two different people run a race the graphs track their distance vs. times during the race. Explain the difference between the two runners motions. use words like speed and acceleration.
Answer:
Runner A is moving at a constant speed, therefore has a positive acceleration.
Runner B is moving at a constant speed, stopping, then speeding up again.
Explanation:
True or False. Chemical changes only rearrange the elements that are
already present.
True or False. The reactants and the products of a chemical equation
always have the same number of atoms.
Here's link to the answer:
tinyurl.com/wpazsebu
A bottle of an unknown liquid has a volume of 6.3 mL and mass 255.15 g. What is its density?
Answer:
40.5 g/mL
Explanation:
Density is a measure of a substance's mass over its volume.
d = m/v
Therefore d = 255.15g/6.3mL = 40.5 g/mL
What ratio of NaCN to HCN is needed to prepare a pH 9.40 buffer? (Ka of HCN is 4.9 × 10⁻¹⁰)
Answer: The ratio of NaCN to HCN is, 1.26
What is the percent composition of oxygen in Iron(III) oxide? (Round to three sig figs)
Fe2O3 159.7g/mol
Fe =55.85 x 2 =111.7 g/mol
O = 16.00 x 3 = 48.00 g/mol
____% O
30.1%
do not ask why it just is.
tell uses of nitrogen
Answer:
Hello
Preservation of Food. Nitrogen gas is used to help with food preservation by preventing oxidative damage leading to food spoiling.Pharmaceuticals Industry.Electronics Manufacturing.Stainless Steel Manufacturing.Explanation:
thanks
1 point
have specific requirements that need to be met in order for an
entrepreneur to be considered.
O Loans
O Investments
O None of the other answers
O Grants
Q4
Which of the following is an example of nonpoint source pollution?
A. industrial effluent
B. Agricultural runoff
C. illegal dumping of waste
D. Oil leaking from your car
Answer:
Option C.
Ilegal dumping of waste
Explanation:
This is because non point source of pollution refers to source of pollution that are many and not directly one which is illegal or does not meet the legal term. This type of pollution does not have a point source, it has many sources and this type of pollution is cause by rainfall or precipitation. Where when the rain fall, it wash away the waste through to water bodies, causing pollution and endangering water bodies.
khan academy sucks. can someone answer this? :)
WILL GIVE BRAINLIEST
How much heat energy is absorbed when 94.0 g of water is heated from 5.0C to 29.5C? Show your work.
Answer:
In order to be able to solve this problem, you will need to know the value of water's specific heat, which is listed as
c=4.18Jg∘C
Now, let's assume that you don't know the equation that allows you to plug in your values and find how much heat would be needed to heat that much water by that many degrees Celsius.
Take a look at the specific heat of water. As you know, a substance's specific heat tells you how much heat is needed in order to increase the temperature of 1 g of that substance by 1∘C.
In water's case, you need to provide 4.18 J of heat per gram of water to increase its temperature by 1∘C.
What if you wanted to increase the temperature of 1 g of water by 2∘C ?
This will account for increasing the temperature of the first gram of the sample by n∘C, of the the second gramby n∘C, of the third gram by n∘C, and so on until you reach m grams of water.
And there you have it. The equation that describes all this will thus be
q=m⋅c⋅ΔT , where
q - heat absorbed
m - the mass of the sample
c - the specific heat of the substance
ΔT - the change in temperature, defined as final temperature minus initial temperature
In your case, you will have
q=100.0g⋅4.18Jg∘C⋅(50.0−25.0)∘C
q=10,450 J
The ______ properties of a substance can be observed only when it undergoes a change to become an entirely different kind of substance with different properties.
Enter the answer
Answer:chemical
Explanation:
that isssssss? (thank you whoever answers in advance)
Answer:
c
Explanation:
A pathogen or infectious agent is a biological agent that causes disease or illness to its host. The term is most often used for agents that disrupt the normal physiology of a multicellular animal or plant. However, pathogens can infect unicellular organisms from all of the biological kingdoms.
Answer:
Harmful to living organisms
Explanation:
tbh, quizzlet lol
HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP
Answer:
jupiter is your answer
Explanation:
you weigh more there
13 Consider this neutralization reaction.
H2SO4 + 2KOH → K2SO4 + 2HOH
Which compound is the salt produced in this
reaction?
(1) KOH
(2) H2SO4
(3) K2SO4
(4) HOH
Explanation:
The answer to the question is (3) K2SO4
An artificial vesicle containing a 1 M glucose solution is composed of a phospholipid bilayer lacking any protein components other than aquaporin channels. Assuming an ideal solution, what is the ratio of the osmotic pressure measured immediately after immersion of the vesicle in de-ionized water to the osmotic pressure measured immediately after immersion of an identical vesicle containing the original volume of 1 M glucose solution added to an equal volume of 1 M KCl solution in deionized water
Answer:
A: 0.67
The situation described in the question is analogous to a semipermeable membrane. Water is able to pass through aquaporin channels present in the liposome, but large uncharged particles (glucose) and ions (K+ and Cl -) are impermeable and will remain trapped within the liposome. If assumed to be ideal, the osmotic pressure, π, exerted by the solution due to molarity differences across the membrane is defined as π = iMRT, where i is the van't Hoff factor, M is the molarity of the solution, R is the universal gas constant, and T is the absolute temperature of the solution. A change in osmotic pressure at constant temperature is due to changes in iM, a term that is equivalent to the concentration of dissolved particles produced by solute in solution. When compared to the original volume of 1 M glucose, the new combined solution has twice the volume and three times the number of dissolved particles (1 M KCl, a strongly electrolytic solution, produces 1 M concentrations of both K+ and Cl- in solution), or an increase in the concentration of dissolved particles by a factor of 1.5. This is equivalent to a combined molarity of dissolved particles of 1.5 M. The ratio of osmotic pressure is then [1 M dissolved glucose] / [1.5 M dissolved glucose + KCl] = 0.67
Explanation:
What is the name of this hydrocarbon?
Answer:In the given molecule the methyl group is attached at the second carbon atom of the parent chain. Therefore the name of hydrocarbon is 2-methylbutane.
Explanation:
How many grams of Ag2S
are produced from 10.0
grams of AgI?
10
AgI + Nazs
Ag2S +NaI
Answer:
10.0 g of AgI will produce 5.28 g of Ag₂S
Explanation:
The balanced equation of the reaction is given below:
2AgI + Na₂S ----> Ag₂S + 2NaI
From the equation of reaction, 2 moles of AgI produces 1 mole of Ag₂S
The moles of a substance is related to its mass by a quantity known as molar mass which is defined as the mass of one mole of that substance.
Molar mass of AgI = (108 + 127) g = 235 g
Molar mass of Ag₂S = (108 × 2 + 32) g= 248 g
Mass of 2 moles of AgI = 2 × 235 g = 470 g
470 g of AgI produces 248 g of Ag₂S
10 g of AgI will produce 248 /470 × 10 g of Ag₂S = 5.28 g
Therefore, mass of Ag₂S produced = 5.28 g
De la reacción 3Zn+ 2H2PO4----> Zn3(PO4)2 +2H2 por cada 9 moles de zinc cuantos moles de fosfato de zinc se producen
Answer:
Por cada 9 moles de zinc, 9 moles de fosfato de zinc se producen.
Explanation:
La reacción balanceada es:
3 Zn+ 2 H₂PO₄ → Zn₃(PO₄)₂ + 2 H₂
Por estequiometria de la reacción (es decir, la relación entre la cantidad de reactivos y productos en una reacción química), las siguientes cantidades de moles de cada compuesto participan de la reacción:
Zn: 3 moles H₂PO₄: 2 moleZn₃(PO₄)₂:1 mole H₂: 2 molesEntonces podes aplicar la siguiente regla de tres: si por estequiometria 3 moles de zinc produce 1 mol de fosfato de zinc, 9 moles de zinc cuántos moles de fosfato de zinc producirá?
[tex]moles de fosfato de zinc=\frac{9 moles de zinc*1 mole de fosfato de zinc}{3 moles de zinc}[/tex]
moles de fosfato de zinc= 9
Por cada 9 moles de zinc, 9 moles de fosfato de zinc se producen.
22) An embryo implants and begins to develop within which structure? *
4 points
Ovary
Oviduct
Cervix
Uterus
Answer:
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Game Antics
What is the application of separating funnel
Answer:
Used for liquid extractions
Explanation:
Answer:
the application of separating funnel is
to separate immiscible liquids from their solutes.
NEED HELP ASAP 50 POINTS WILL MARK BRAINLIEST!
Answer:
156748
Explanation:
The first number is on the magnetism card 1
The combination contains only the numbers found on the cards showing techniques to separate mixtures 1,5,6,7,8
The last number is on the filtering card
The red is in the middle half of 8 is 4
What is the experimental yield of Li2O?