Answer:
Endergonic is in think en is close to in and exergonic is out
How many moles of oxygen are required to produce 4.62 moles of carbon monoxide that is formed by direct combination of its elements?
Answer: 6.01
Explanation:
You have a 0.8 L of a 0.5 M HCl solution. How many moles of HCl does this solution contain?
Answer:
[tex]\boxed {\boxed {\sf 0.4 \ mol \ HCl}}[/tex]
Explanation:
Molarity is concentration measured in moles per liters. It is the number of moles of solute per liters of solution. The formula is:
[tex]molarity= \frac{moles \ of \ solute}{liters \ of \ solution}}[/tex]
We know the solution of HCl has a molarity of 0.5 molar and there are 0.8 liters of solution.
1 molar (M) is equal to 1 mole per liter. Let's convert the molarity of 0.5 M HCl to 0.5 mol HCl per liter. This will make unit cancellation easier.The moles of solute or HCl are unknown, so we can use x. Now, we can substitute all known values into the formula.
[tex]0.5 \ mol \ HCl /L = \frac {x}{0.8 \ L}[/tex]
Since we are solving for the moles of solute (x), we must isolate the variable. It is being divided by 0.8 liters. The inverse of division is multiplication, so we multiply both sides by 0.8 L.
[tex]0.8 \ L *0.5 \ mol \ HCl /L = \frac {x}{0.8 \ L} *0.8 \ L[/tex]
[tex]0.8 \ L *0.5 \ mol \ HCl /L=x[/tex]
The units of liters (L) cancel.
[tex]0.8 * 0.5 \ mol \ HCl= x[/tex]
[tex]0.4 \ mol \ HCl=x[/tex]
This solution contains 0.4 moles of HCl.
. What is global warming? What can people do to reduce global warming?
Answer:
definition- the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.
Power your home with renewable energy, Invest in energy-efficient appliances, and Reduce water waste etc.
Answer:
Global warming is an effect on Earth, caused when too much carbon dioxide is present in the air. Carbon dioxide is a green house gas and partially restricts radiation from going back to into space, preventing the Earth from becoming too cold.
However, too much carbon dioxide has the effect of warming the Earth more than normal as it traps more heat on Earth. Thus, the greenhouse effect is enhanced- in short, global warming means that the Earth is much more warmer than normal.
The temperature on Earth has increased by 0.5 °C in the last 100 years. Although this doesn't seem like much, but a small increase can cause a big change. Global warming causes ice sheets to melt and causes sea levels to rise. Due to this, costal flooding frequently happens. In drier seasons, the heat is also more intense becuase of global warming.
Global warming can be reduced by burning less fossil fuels and using solar and wind power instead. Using more public transport could also help reduce carbon dioxide present in the atmosphere, as less vehicles will be releasing carbon dioxide. Reducing the amount of deforestation will greatly help reduce global warming, because trees absorb carbon dioxide from the atmosphere, and through the process of carbon dioxide, they change it into oxygen.
The initial concentration of a solution of NaOH is 5.0 M. What volume of the concentrated stock solution is needed to make 200 mL of .02 M solution? (YOU MUST INCLUDE UNITS IN YOUR ANSWER) *
Answer:
0.8 mL
Explanation:
Use the formula M1V1 = M2V2.
Plug the values in.
5(V1) = 0.02(200)
5V1 = 4
V1 = 0.8 mL
Hope this is right, correct me if I'm wrong!
How are tadpoles and larvae similar
A: They both fly.
B: They both develop antennae.
C: They both eat and grow a lot.
D: They are both fully grown adults
Answer:
C. they both eat and grow a lot, i hope it helps
Identify the type of reaction?
C6H12 + 9 O2 —> 6 CO2 + 6 H2O
Answer: 5) combustion is the answer.
Explanation: Combustion is reaction with oxygen.
A sample of carbon monoxide at 57 degrees Celsius and under 0.75 atm occupies 85.3 liters of space. What mass of carbon monoxide is present in the sample?
Write the expression for K in terms of the solubility, s, for each salt, when dissolved in water. nickel(II) cyanide silver hydroxide
Answer:
[tex]Ksp=[Ni^{2+}][CN^-]^2\\\\Ksp=[Ag^+][OH^-][/tex]
Explanation:
Hello there!.
In this case, for this equilibrium problem, it turns out firstly necessary to write the chemical equations for the solubilization of both nickel (II) cyanide and silver hydroxide as shown below:
[tex]Ni(CN)_2(s)\rightarrow Ni^{2+}(aq)+2CN^-\\\\AgOH(s)\rightarrow Ag^+(aq)+OH^-[/tex]
Thus, by means of the law of mass action we set up these equilibrium expressions as shown below:
[tex]Ksp=[Ni^{2+}][CN^-]^2\\\\Ksp=[Ag^+][OH^-][/tex]
Best regards!
A balloon is inflated to a volume of 8.0 L on a day when the atmospheric pressure is 1.013 bar . The next day, a storm front arrives, and the atmospheric pressure drops to 0.968 bar . Assuming the temperature remains constant, what is the new volume of the balloon, in liters
Answer:
[tex]V_2=8.4L[/tex]
Explanation:
Hello there!
In this case, according to the definition of the Boyle's law, which describes de pressure-volume behavior as an inversely proportional relationship, it is possible for us to write:
[tex]P_1V_1=P_2V_2[/tex]
Thus, since we are given the initial pressure and temperature, and the final pressure, we are able to calculate the final volume as shown below:
[tex]baV_2=\frac{P_1V_1}{P_2}\\\\V_2=\frac{8.0L*1.013bar}{ 0.968bar}\\\\V_2=8.4L[/tex]
Regards!
MOLE CONVERSIONS
1. How many H2O molecules are in 183.2 grams of H2O gas?
2. How much space (L) does 3.614 x 1026 molecules of H2O2 take up?
3. How many molecules are in 3492.5 grams of Mg3(PO4)2?
4. How many grams does 60.2 L of Al(NO3)3 weigh?
5. How many Nmolecules are in 473.2 grams of N ?
6. How many grams does 80.34 L of Hz weigh?
7. How many grams are in 5.39 x 1025 molecules of
Al(OH),?
Stoichiometry and Balancing Chemical Equations
Balance the following chemical reactions
8. _H2 + _N2 => _NH3
9. _58 + _O2 => _SO
10. _Ni(CIO)2 → _NICI + O2
11 _C₂H4
_02 > CO2
H2O
12 _KCIO
_КСІ
0
13 Cu(OH)2 + __HC H302
Cu(C2H2O2)2
14. CH8 + __0
CO ____H20
+
+
+
_H20
15. 76.2 Liters of O2 gas reacts with an excess of Cat STP. How many grams of
CO will be produced?
2C + O2 -> 200
Due in less than 5 minutes
Answer:
1. 6.116x1024 Molecules of H2O
2. 13400 L
3. 8.001x1024 Molecules of Mg3(PO4)2
4. 572 g.
5. 1.017x1025 Molecules of N2
6. 7.24 g
.7. 6980 g. of Al(OH)3
8. 3H2 + N2 => 2NH3
9. S8 + 8O2 => 8SO2
10. Ni(ClO3)2→ NiCl2 + 3O2
11. C2H4 + 3O2→ 2CO2 + 2H2O
12. 2KClO3→ 2KCl + 3O2
13. Cu(OH)2 + 2HC2H3O2→ Cu(C2H3O2)2 + 2H2O
14. C3H8 + 5O2→ 3CO2 + 4H2O
15. 191 g of CO
What do you think happens to the atoms of a substance when it burns?
Claim 1: All of the atoms are destroyed.
Claim 1: All of the atoms are destroyed.
Claim 2: All of the atoms rearrange to form a different substance or different substances.
Claim 2: All of the atoms rearrange to form a different substance or different substances.
Claim 3: Some of the atoms are destroyed, and some of the atoms rearrange to form a different substance or different substances.
Explain why you chose your answer.
Answer:Its claim 2
Explanation:claim 1 says All of the atoms are destroyed but atoms cant be destroyed.Claim 3 might seem correct but is not.
Which type of molecule is shown below?
O A. Alkene
O B. Cyclic alkane
O C. Alkane
O D. Alkyne
Answer:
A. Alkene
Explanation:
Alkenes are a class of hydrocarbons characterized by the possession of a carbon to carbon double bond (=) in their structure. This means that C=C is the functional group of alkenes. Alkenes have the general formula; CnH2n.
Based on the structure in the attached image, the structure can be identified to be an ALKENE because it possess a C=C functional group. Specifically, the IUPAC name of the structure is 1,2- dimethyl ethene.
Dau coroana va roggg!!!!!!
Answer:
it's very easy and simple answer u can't do it
Antonio is a silversmith and works with various metals. At the end of the day, he reclaims and separates each metal by using an inexpensive toxic acid though other methods are available. The risk of fire as well as health dangers to Antonio is unknown. What should Antonio do
The question is incomplete, the complete question is;
Antonio is a silversmith and works with various metals. At the end of the day, he reclaims and separates each metal by using an inexpensive toxic acid though other methods are available. The risk of fire as well as health dangers to Antonio is unknown. What should Antonio do? A) Dispose of the used acid by pouring it down the drain since the government will take care of any environmental issues that come from polluting the water. B) Get a fire insurance policy and make sure to visit the doctor regularly. C) Switch to another potentially less dangerous method of separating each metal. D) Pour it out in back of the studio in the gutter.
Answer:
C) Switch to another potentially less dangerous method of separating each metal.
Explanation:
The importance of safety in manufacturing processes can not be over emphasized. Clearly, Antonio's method of separating each metal holds the potential of a fire outbreak or causing major health problem for Antonio.
The best thing that Antonio can do is to explore other less potentially dangerous methods of separating each metal since there are other available and possibly safer methods of achieving the same end.
HOW MANY ELEMENTS ARE IN 3FE(OH)3
Answer:
Three
Explanation:
Iron
Oxygen
Hydrogen
How many moles of chlorine are in 100g Chlorine (CI^2)?
A) 64.6
B) 100
C) 1.41
D) 0.355
Answer:
35.453 good luck with your work
Please try solving this question :)
Alcohol rather than water is used in a thermometer.
What property of alcohol makes it suitable to be used in
the thermometer?
Answer:
Ethanol
Explanation:
Answer:
Alcohol remains liquid at lower temperatures, but also vaporizes at lower temperatures (compared to water), so it is suitable for thermometers that operate over a lower temperature range, such as outdoor thermometers.
Explanation:
Hope it helps to you :) <3<3
I nned help with help plssssss
Answer:
11
Explanation:
3 + 8 = 11
20 character minimum, here you go.
CO2 + H20 - H2CO3
The reaction above is classified as
a combustion reaction
b double displacement
c synthesis
d decomposition
e single displacement
Answer:
the correct answer is option A
Draw and name all six (6) of the possible monochloro derivatives when methylcyclopropane is exposed to chlorine and light. Show all stereoisomers including diastereomers and enantiomers. Indicate all relative and absolute stereochemical relationships in the structure. Name each compound. All answers should have the formula C4H7Cl.
Answer:
Attached below
Explanation:
Attached below is the required diagrams
From the attached diagram ; Compounds 1 and 2 are achiral ( i.e. stereoisomers aren't possible here )
Compound 3 : ( 1S, 2R ) - 1 - chloro-2-methylcyclopropane
Compound 4: ( 1R , 2S ) - 1- chloro-2-methylcyclopropane
Compound 5: ( 1R, 2R ) - 1 - chloro-2-methylcyclopropane
Compound 6: ( 1S, 2S ) -1- chloro-2- methyl cyclopropane
how many molecules in 400g of acetic acid
Answer:chemical formula of acetic acid is or
so, molecular mass of acetic acid = 2 × atomic mass of C + 4 × atomic mass of H + 2 × atomic mass of O
= 2 × 12 + 4 × 1 + 2 × 16
= 24 + 4 + 32
= 60g/mol
given mass of acetic acid = 22g
so, no of moles of acetic acid = given mass/molecular mass
= 22/60 ≈ 0.367
so, number of moles of acetic acid is 0.367mol
number of molecules in 0.367 mol of acetic acid = 6.022 × 10²³ × 0.367
= 2.21 × 10²³
Explanation:
A knife is a example of a pulley True or false
Answer:
In my Opinion
Explanation:
False. There's no pulley system or activity in a knife.
The balmer thermometer uses the atomic transitions of what element to measure the temperature of stars?
A. Helium
B. Gamma rays
C. Hydrogen
D. Nitrogen
E. Water
What determines the brightness of a light wave?
Answer: The brightness of light is related to intensity or the amount of light an object emits or reflects. Brightness depends on light wave amplitude, the height of light waves. Brightness is also somewhat influenced by wavelength.
Explanation:
Help plz:)))I’ll mark u Brainliest
Answer:
112.9-kJ
Explanation:
Example;
To find the energy, you should follow the following rule :
Q= mass * latent heat of vaporization
Q= m * l
Q= 50g * 2260 J/g
Q= 113000 J
Answer;
The heat of vaporization of water is 2257-J/g - each grams must release 2257-J of thermal energy. When water condenses its temperature remains constant.
Q = m x Hv ===> 50-g x 2257-J/g = 112,850-J = 112.9-kJ
A chemist must dilute 61.9 mL of 548. nM aqueous sodium carbonate (Na2CO3) solution until the concentration falls to 484. nM . He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in milliliters. Round your answer to 3 significant digits.
Answer:
The final volume will be "70.08 mL".
Explanation:
The given values are:
Molar mass,
M1 = 548 nM
or,
= [tex]5.48\times 10^{-7} \ M[/tex]
M2 = 484 nM
or,
= [tex]4.84\times 10^{-7} \ M[/tex]
Volume,
V1 = 61.9 mL
V1 = ?
By using the expression, we get
⇒ [tex]M1\times V1=M2\times V2[/tex]
or,
⇒ [tex]V2=\frac{M1\times V1}{M2}[/tex]
By substituting the values, we get
[tex]=\frac{5.48\times 10^{-7}\times 61.9}{4.84\times 10^{-7}}[/tex]
[tex]=\frac{339.212}{4.84}[/tex]
[tex]=70.08 \ mL[/tex]
The half-life of Co-60 is 5.3 years. If the initial mass of the sample is 1000g, how much will remain after 26.5 years.
Answer:
31.25
Explanation:
The half life is 5.3 years
This means that 1.2 of the orginal matter is left after every 5.3 years.
To find this, divide 26.5(total years) by 5.3(hald life)
This gets you 5.
This is how many times half life occurs, or how many times the total mass is split in half.
This can be though of 1/2^5th power
Or
1/32
Now, lets mutliply this by the 1000 total mass:
1000*1/32
=
31.25g
This is your answer!
Hope this helps!
A Container with 8.0 mol of gas at a pressure of 2.0 atm has a volume of 7.00 L.
What is the temperature of the gas?
The temperature of the gas is (value1] K.
Answer:
dryhnjkftglqawghbnjsdfmkpohbgfddfvgb
Explanation:
20. A gas is collected over water at 24.0 °C and 745 mm Hg. Use the water vapor pressure
table below to calculate the pressure of the dry gas alone. Show your work and round to
the proper number of significant digits. Do not put the unit.
T(0) P (mm Hg)
21 18.6
22 19.8
23
21.1
24 22.4
25 23.8
26 25.2
27 26.7
28 28.3
29 30.0
30 31.8
35 42.2
Answer:
Pressure of dry gas = 722.6 mmHg
Explanation:
From the question given above, the following data were obtained:
Measured pressure = 745 mmHg
Water vapor pressure at 24.0 °C = 22.4 mmHg
Pressure of dry gas =?
The pressure of dry gas can be obtained as follow:
Measured pressure = pressure on dry gas + water vapor pressure
745 = pressure of dry gas + 22.4
Collect like terms
Pressure of dry gas = 745 – 22.4
Pressure of dry gas = 722.6 mmHg
An experimental measurement was taken of 10.4mL and the actual measurement was 9.7mL. What is the percent error?
Answer:
13%
Explanation: