Answer:
[tex]6molCO_2[/tex]
Explanation:
Hello there!
In this case, according to the described reaction, we can set up the chemical equation as shown below:
[tex]NaHCO_3+CH_3COOH\rightarrow CO_2+H_2O+CH_3COONa[/tex]
We can evidence the 1:1 mole ratio of baking soda (NaHCO3) to CO2 and therefore the produced moles of latter are calculated as shown below:
[tex]6molNaHCO_3*\frac{1molCO_2}{1molNaHCO_3} \\\\6molCO_2[/tex]
Best regards!
FREE BRAINLIEST!!!!! You have two objects. One is hot the other is cold (lack of heat). In what direction does the heat want to travel?
Answer:
the heat wants to travel up. Heat rises
Explanation:
why is detergent called soapless soap
Answer:
Detergents are referred to as soapless soaps because they have a washing action similar to soap but do not contain the typical chemical contents of soaps, such as sodium or potassium salts of long chain fatty acids.
Explanation:
Please answer and thank you
Answer:
It's A.
Atoms that have the same number of valence electrons in their outer shell have similar properties and belong to the same family of elements.
31. Use the equation given below to answer the following question: If 755 kJ of heat was absorbed, what mass of carbon dioxide reacted?
2CO2 + 43.9 kJ → 2CO +O2
Answer:
1514g of CO₂ reacted
Explanation:
Based on the reaction:
2CO₂ + 43.9kJ → 2CO + O₂
2 moles of carbon dioxide require 43.9kJ of energy to produce 2 moles of carbon monoxide and 1 mole of oxygen
To solve this question, we must convert the 755kJ of energy to moles of carbon dioxide that reacts and to find the mass as follows:
755kJ * (2 moles CO₂ / 43.9kJ) =34.4 moles of CO₂ are produced
Mass CO₂: Molar mass: 44.01g/mol
34.4 moles CO₂ * (44.01g / mol) =
1514g of CO₂ reactedNeed help to find the molarity. Please help!
Answer:
0.092M
Explanation:
Molarity of glucose solution = number of moles ÷ volume
According to this question, 12.5g of glucose (C6H12O6) is dissolved in enough water to make 750mL of solution.
Molar mass of glucose (C6H12O6) = 12(6) + 1(12) + 16(6)
= 72 + 12 + 96
= 180g/mol
mole = mass/molar mass
mole = 12.5/180
mole = 0.069mol
Volume of solution = 750mL = 750/1000 = 0.750L
Hence, molarity = n/V
Molarity = 0.069 ÷ 0.750
Molarity = 0.092M
what does binding energy measure
Answer:
"Electron binding energy, more commonly known as ionization energy, is a measure of the energy required to free an electron from its atomic orbital or from a solid. ... The atomic binding energy of the atom is the energy required to disassemble an atom into free electrons and a nucleus."
Explanation:
Hope this helps! <33
God bless your heart <3333
have a wonderful day!
Binding energy is a required amount of energy that disperses the other particles of the reaction system. It measures the energy needed to free an electron or a subatomic particle.
What is binding energy?Binding energy is the ionization energy that depicts how much energy will be needed if an electron has to be removed from an atom for a reaction to occur.
It can be said that the energy required to free an electron from the orbit of the atom is measured in electron volt (eV). It is a little different from ionization energy as binding energy can remove any subatomic particle and not just an electron.
Therefore, the binding energy measures the freed subatomic particle.
Learn more about binding energy here:
https://brainly.com/question/16705705
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2. Can you say that the matter which underwent a chemical change is still the
same substance as before? Why?
Answer:
No
Explanation:
A chemical change is a change that involves a change in the chemical composition of matter. A new substance is formed. In a chemical change, new chemical and physical properties of the substance are formed. In a chemical change, the chemical and physical properties of the substance formed will be different from the original substance.
The matter which underwent a chemical change is not still the same substance as before.
What is Chemical change?This is the type of change which occurs when two substances known as reactants react to form a new product.
The formation of a new product through bonding and other parameters thereby makes the substance to be different as it was before.
Read more about Chemical change here https://brainly.com/question/11987405
Show work, thanks
1. How many grams of AgNO3 are necessary to make 1.0 L of a 6.0 M stock solution?
2. How would you make 1.0 L of a 0.1 M solution of AgNO3 from your 6.0 M stock solution?
Answer:
Q.1
Given-
Volume of solution-1 L
Molarity of solution -6M
to find gms of AgNO3-?
Molarity = number of moles of solute/volume of solution in litre
number of moles of solute = 6×1= 6moles
one moles of AgNO3 weighs 169.87 g
so mass of 6 moles of AgNO3 = 169.87×6=1019.22
so you need 1019.22 g of AgNO3 to make 1.0 L of a 6.0 M solution
1. the grams of [tex]\rm AgNO_3[/tex] is 1019.22.
2. 10,192.2
What is molarity?Molarity is the measure of the concentration of any solute in per unit volume of the solution.
1. Volume is 1.0 l.
Molarity of solution -6 m
To find the mass of [tex]\rm AgNO_3[/tex]
[tex]\rm Molarity = \dfrac{n}{V}\\\\rm 6 = \dfrac{n}{1}\\\\n = 6 \times 1 = 6[/tex]
Mass of One mole of [tex]\rm AgNO_3[/tex] is 169.87 g
Therefore, the mass of 6 moles will be
169.87 × 6 = 1019.22
2. Molarity of solution 6.0
Volume of solution is 0.1m
The mass of 6 moles will be
169.87 × 6 = 1019.22
[tex]\rm density = \dfrac{mass }{volume} \\\\\rm density = \dfrac{1019.22 }{0.1} = 10,192.2[/tex]
Thus, the options are 1. 1019.22 2. 10,192.2
Learn more about molarity, here
Potato farmers in Ireland during the mid 1800s all grew the same type of potato. The potato plants were all produced as clones of one another. When a fungus infected the crop, all of the potatoes were destroyed. This occurred because these potato plants
Answer:
The crop failures were caused by late blight, a disease that destroys both the leaves and the edible roots, or tubers, of the potato plant.
Balance the following reactions:
1. PbO2 → PbO + O2
Explanation:
2 moles of lead oxide ->
2PbO2 -> 2PbO + O2
The concentration of C6H12O6 may be represented as (C6H12O6) {C6H12O6} [C6H12O6]
Answer:
[tex][C_6H_{12}O_6][/tex]
Explanation:
Hello there!
In this case, since the concept of solution concentration is majorly used in terms of moles per liters of solution or molarity (M), it is also possible to represent this chemical unit by using squared brackets, [ ].
In such a way, when focused on the concentration of glucose, C6H12O6, we can use:
[tex][C_6H_{12}O_6][/tex]
Best regards!
Create 3 multiple choice questions on
photosynthesis and the tropisms.
Number your questions using 1,2,3
and
your answer choices using a,b,c.
Example:
1)What three things are required in order for
photosynthesis to take place
A)Sugar, glucose plants
B)Radiant energy, water, oxygen
C)Radiant energy, water, carbon dioxide
Help ASAP!
how many grams are in 2.34 moles of Li?
Answer:
The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Lithium, or 6.941 grams.
Thus, the answer would be 16.24194.
Explanation:
A comb is rubbed with a piece of wool fabric and placed next to some scraps of paper.
The paper moves toward the comb. The movement of the paper is caused by —
static electricity
magnetic attraction
mechanical energy
chemical energy
Answer: static electricity
Explanation: rubbing the comb creates. Static charge to comb
Can someone please help a girl out and answer this plsss ...need this as soon as posible
Answer:
the anwser would be B obtain energy
Explanation:
What is the percentage composition of C6H12O6? Must show work.
Answer:
I think the percent composition of carbon in C6H12O6 is: 25% C 40% C 7% C
Explanation:
Please answer the following questions....Very urgent!
How many atoms are in 9.95 moles of iron?
How many molecules are in 0.03 moles of Carbon dioxide?
How many moles are found in 7.20 x 10^23 atoms of platinum?
Answer:
59.92 × 10²³ atoms are in 9.95 moles of iron
1.8 ×10²² molecules are in 0.03 moles of Carbon dioxide
1.19 moles are found in 7.20 x 10^23 atoms of platinum
When reacting Na with Cl2 , we calculated that the theoretical yield should be 12.5 grams. Our actual yield was 13.0 grams. What is the percent yield?
Answer:
[tex]\boxed {\boxed {\sf 104 \%}}[/tex]
Explanation:
Percent ratio is the ratio of the actual yield to the theoretical yield. The formula is below.
[tex]Percent \ Yield} = \frac{{Actual \ Yield}}{{Theoretical \ Yield}} \times 100 \%[/tex]
The reaction of sodium and chlorine should theoretically yield 12.5 grams, but the actual yield was 13.0 grams.
actual yield= 13.0 gtheoretical yield = 12.5 gSubstitute these values into the formula.
[tex]Percent \ Yield} = \frac{{13.0 \ g }}{{12.5 \ g}} \times 100 \%[/tex]
Divide.
[tex]Percent \ Yield} = 1.04 \times 100 \%[/tex]
Multiply.
[tex]Percent \ Yield= 104 \%[/tex]
For this reaction, the percent yield is 104%
25 g of 116oC steam are bubbled into 0.2384 kg of water at 8oC. Find the final temperature of the system.
Answer: The final temperature of the system will be [tex]13.14^0C[/tex]
Explanation:
[tex]heat_{absorbed}=heat_{released}[/tex]
As we know that,
[tex]Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})[/tex]
[tex]m_1\times c_1\times (T_{final}-T_1)=-[m_2\times c_2\times (T_{final}-T_2)][/tex] .................(1)
where,
q = heat absorbed or released
[tex]m_1[/tex] = mass of steam = 25 g
[tex]m_2[/tex] = mass of water = 0.2384 kg = 238.4 g (1kg=1000g)
[tex]T_{final}[/tex] = final temperature = ?
[tex]T_1[/tex] = temperature of steam = [tex]116^oC[/tex]
[tex]T_2[/tex] = temperature of water = [tex]8^oC[/tex]
[tex]c_1[/tex] = specific heat of steam = [tex]1.996J/g^0C[/tex]
[tex]c_2[/tex] = specific heat of water= [tex]4.184J/g^0C[/tex]
Now put all the given values in equation (1), we get
[tex]25g\times 1.996J/g^0C\times (T_{final}-116)=-[238.4g\times 4.184J/g^0C\times (T_{final}-8)][/tex]
[tex]T_{final}=13.14^0C[/tex]
Therefore, the final temperature of the system will be [tex]13.14^0C[/tex]
Please help me with this net ionic chem question. I’ll mark you brainiest if you know it.
Answer:
B: 3k+ + 3OH¯ + Fe3+ + 3KOH = Fe3(H) + + 3NO3¯
Explanation:
Potassium hydroxide (KOH) reacts with iron (III).
The normal balanced equation is;
Fe(NO3)3 + 3KOH = Fe(OH)3 + 3KNO3
Now the ionic equation will be;
3k+ + 3OH¯ + Fe3+ + 3KOH = Fe3(H) + + 3NO3¯
AH for the reaction
IF5 (g) → IF3 (g) + F2 (g)
kJ, give the data below.
IF (8) + F2 (g) → IF3 (8)
IF (g) + 2F2(8) ► F5 (8)
AH=-390 kJ
AH=-745 kJ
A) -1135
B) +35
C) +1135
D) -35
E) +355
Answer:
E) +355 kJ
Explanation:
Based on Hess's law, it is possible to obtain ΔH of a reaction from the sum of similar reactions:
(1) IF(g) + F2(g) → IF3(g) ΔH = -390kJ
(2) IF(g) + 2F2(g) → IF5(g) ΔH = -745kJ
The sum of (1) - (2) is:
IF(g) + F2(g) → IF3(g)
IF5(g) → IF(g) + 2F2(g)
_________________
IF5(g) → IF3(g) + F2(g)
ΔH = -390kJ - (-745kJ)
ΔH = +355kJ
Right answer is:
E) +355 kJhow many moles are there in 2.75L of a 2.0M solution
A sample of nitrogen gas is collected over water at temperature of 20.0˚C. What is the pressure of the nitrogen gas if atmospheric pressure is 1.01atm? (vapor pressure of water at 20.0˚C is 17.5 torr)
Answer:
[tex]P_N=0.987atm[/tex]
Explanation:
Hello there!
In this case, for these problems about collecting a gas over water, we must keep in mind that once the gas has been collected, the total pressure of the system is given by the atmospheric pressure, in this case 1.01 atm. Next, since we also have water in the mixture, we can write the following equation:
[tex]P_T=P_w+P_N[/tex]
Thus, by solving for the pressure of nitrogen and using consistent units, we obtain:
[tex]1.01atm=17.5torr*\frac{1atm}{760torr} +P_N\\\\P_N=1.01atm-0.023atm\\\\P_N=0.987atm[/tex]
Which three types of reactions yield a product that is a chemically bonded combination of reactants?
A. replacement, polymerization, decomposition
B. polymerization, decomposition, oxidation
C. decomposition, synthesis, replacement
D. oxidation, synthesis, polymerization
Answer:
D
Explanation:
i just got it right on edge
Answer:
It is D.
Explanation:
I also got it correct on edge :)
help it’s for today, not accepting links
How is Percent Composition of a molecule by atoms different than Percent Composition of a molecule by mass of?
Answer:
Percent composition by mulecules is: (mass of element/molecular mass) x 100
Percent composition by atoms is: (mass of element/molecular mass) x 100.
Explanation:
So their the same
How many liters of water do we need to add to 5.00 moles to get a 0.648 M solution?
Answer: This is a typical acid/base equilibrium problem, that involves the use of logarithms.
Explanation:We assume that both nitric acid and hydrochloric acid dissociate to give stoichiometric
H
3
O
+
.
Moles of nitric acid:
26.0
×
10
−
3
⋅
L
×
8.00
⋅
m
o
l
⋅
L
−
1
=
0.208
⋅
m
o
l
H
N
O
3
(
a
q
)
.
And, moles of hydrochloric acid:
88.0
×
10
−
3
⋅
L
×
5.00
⋅
m
o
l
⋅
L
−
1
=
0.440
⋅
m
o
l
H
C
l
(
a
q
)
.
This molar quantity is diluted to
1.00
L
. Concentration in moles/Litre =
(
0.208
+
0.440
)
⋅
m
o
l
1
L
=
0.648
⋅
m
o
l
⋅
L
−
1
.
Now we know that water undergoes autoprotolysis:
H
2
O
(
l
)
⇌
H
+
+
O
H
−
. This is another equilibrium reaction, and the ion product
[
H
+
]
[
O
H
−
]
=
K
w
. This constant,
K
w
=
10
−
14
at
298
K
.
So
[
H
+
]
=
0.648
⋅
m
o
l
⋅
L
−
1
;
[
O
H
−
]
=
K
w
[
H
+
]
=
10
−
14
0.648
=
?
?
p
H
=
−
log
10
[
H
+
]
=
−
log
10
(
0.648
)
=
?
?
Alternatively, we know further that
p
H
+
p
O
H
=
14
. Once you have
p
H
,
p
O
H
is easy to find. Take the antilogarithm of this to get
[
O
H
−
]
.
Answer link
Calculate the temperature of a gas when it is expanded to 5.25L. The gas originally occupies 3.90L of space at 252K.
Answer:
[tex]T_2=339K[/tex]
Explanation:
Hello there!
In this case, according to the Charles' gas law as way to understand the volume-temperature as a directly proportional relationship for this problem, we can write:
[tex]\frac{T_2}{V_2}=\frac{T_1}{V_1}[/tex]
Thus, given the initial temperature and volume and the final volume, we are able to calculate the final temperature as follows:
[tex]T_2=\frac{T_1V_2}{V_1} \\\\T_2=\frac{252K*5.25L}{3.90L}\\\\T_2=339K[/tex]
Best regards!
Where can you find the atomic mass?
Answer:
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.
Explanation:
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.
Dinitrogen oxide (N2O) gas was generated from the thermal decomposition of ammonium nitrate and collected over water. The wet gas occupied 123 mL at 21◦C when the atmospheric pressure was 760 Torr. What volume would the same amount of dry dinitrogen oxide have occupied if collected at 760 Torr and 21 ◦C? The vapor pressure of water is 18.65 Torr at 21◦C. Answer in units of mL.
Answer:
119.98 mL
Explanation:
Initial volume V1 = 123 ml
Initial temperature = T1 = 21◦C + 273 = 294 K
Initial pressure P1 = 760 Torr - 18.65 Torr = 741.35 Torr
Final volume V2= ???
Final temperature = T2= 21◦C + 273 = 294 K
Final pressure P2 = 760 Torr
From;
P1V1/T1= P2V2/T2
P1V1T2 = P2V2T1
V2 = P1V1T2/P2T1
V2= 741.35 * 123 * 294/760 * 294
V2 = 119.98 mL
A 10 kg package is delivered to your house.
Use one complete sentence to describe an example of how work is done on the package as it gets brought inside.
Make sure to use proper spelling, grammar, and other language mechanics.
In your explanation, make sure to use the terms related to the formula for work (W = Fd).
Answer:
Explanation:
Work is a net force applied through a distance in order to displace an object, commonly abbreviated as W. A net force is the sum of all forces acting on an object. Work is mass times acceleration and distance so to find out the work you simply calculate the acceleration of the box being brought in. Next find the distance it was carried to get in the house. Then find out the mass of the box and finally multiply those sums together to get the amount of work put in to bring the package inside.