Answer:
the state or quality of a material or membrane that causes it to allow liquids or gases to pass through it.
Name two metals which will not liberate hydrogen from
dilute tetraoxosulphate(vi) acid.
To solve such this we must know the concept of double displacement reaction. Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from dilute tetraoxosulphate(vi) acid.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
Copper (Cu) and silver (Ag) would not liberate hydrogen because they are less reactive than hydrogen since their standard reduction potential is higher.
Therefore, copper (Cu) and silver (Ag) would not liberate hydrogen from
dilute tetraoxosulphate(vi) acid.
Learn more about the chemical reactions, here:
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When precipitation falls in summer, sometimes wind pushes it back up into freezing temperatures before falling again. What will most likely occur when this happens?
A.
hail will fall
B.
rain will fall
C.
sleet will fall
D.
snow will fall.
Answer:
A
Explanation:
hail will fall push it back up making it bigger comes back down
During a phase change, such as melting or boiling, the kinetic energy __. Highlight correct answer
Answer: During a phase change, such as melting or boiling, the kinetic energy increases.
Explanation:
Kinetic energy is the energy obtained by the molecules of a substance due to their motion.
When phase change such as melting or boiling takes place then it means heat is absorbed by the substance. As a result, their molecules more even more rapidly from one place to another due to which more number of collisions take place.
Hence, a change in phase of substance occurs as kinetic energy increases in melting or boiling process.
Thus, we can conclude that during a phase change, such as melting or boiling, the kinetic energy increases.
HELPPPPPP!!!! ILL MARK YOU BRAINLIEST!
A cube has a mass of 100g and each side is 5cm. What is its density?
If an organism ingests 950.0 g of glucose (C6H12O6) in its lifetime, how many grams of carbon dioxide (CO2) will be released? (molar mass C6H12O6 = 180.156 g/mol) (molar mass CO2 = 44.009 g/mol)
Answer:
1392. g CO2
Explanation:
Which of the following can be used to detect the presence of an acid?
A. All of the answers are correct
B. blue litmus paper
C, a red cabbage solution
D. an indicator
Which field of study examines homologous structures?
A) Genetics
B) Embryology
C) Comparative Anatomy
D) Physics
Below is a chemical equation. Which of the following are identified by the blue arrows?
Captionless Image
atomic numbers
coefficients
products
subscripts
Substances formed as a result of a chemical reaction are calledImmersive Reader (1 Point) products reactants catalysts precipitates
Answer: substances formed as a result of chemical reaction are called PRODUCTS.
Explanation:
A chemical reaction can be defined as a reaction in which substances known as the REACTANTS makes or breaks it's bonds to form another substance usually referred to as the PRODUCT. Usually, a new substance which is referred to as the product that is formed is different from the original reacting substances. Some of the characteristics of a chemical reaction include:
--> colour change,
--> heat production,
--> precipitation
The rate at which these chemical reaction occurs depends on some factors such as pressure, temperature and concentration of the reactants
There are different examples of chemical reaction which includes:
--> Rusting of iron: this occurs when iron and oxygen combines to form a mixture of iron oxides, which is the product of the chemical reaction.
--> The burning of magnesium in air: in this Chemical reaction, magnesium reacts with oxygen to form magnesium oxide which is the product of the chemical reaction.
2Mg(s) + O2(g) △→ 2MgO(s)
--> Production of table salt: this is formed from the reaction of sodium and chloride to give sodium chloride as the product of the chemical reaction.
Therefore in a chemical reaction, no atom is destroyed or created but a new PRODUCT is formed from reactants.
I really need help with this chemistry assignment multiple choice
Answer:
b option to is correct and answer bro
A 2.2 M solution is made by with 0.45 moles of a solute. What is the final volume of this solution?
Answer: The final volume of this solution is 0.204 L.
Explanation:
Given: Molarity of solution = 2.2 M
Moles of solute = 0.45 mol
Molarity is the number of moles of solute present divided by volume in liters.
[tex]Molarity = \frac{no. of moles}{Volume (in L)}[/tex]
Substitute the values into above formula as follows.
[tex]Molarity = \frac{no. of moles}{Volume (in L)}\\2.2 M = \frac{0.45}{Volume}\\Volume = 0.204 L[/tex]
Thus, we can conclude that the final volume of this solution is 0.204 L.
Help me get it right and no links
Answer:
i think the second answer " fish migration might be prevented" might possibly be your answer
plz help me get it right and no links
Answer:
get what right?
Answer:
You didn't post the question.
Explanation:
Edit your question and I'll try to help you.
Hope this helped? Lol.
What is a group of words called that contains elther a subject or a verb, but not both?
Answer:
Phrase
Explanation:
Phrases don't have both, but clauses do.
Substances that can carry electric current under some conditions but not under others are called semiconductors.
what do you call the materials in which electricity pass easily?
a. insulator
b. conductors
c. non conductors
d. metallic
Answer:
Conductors
Explanation:
If I dilute 213 mL of 9.22 M H2SO4 to 390 ml, what would be the concentration (molarity) of the new solution?(round your answer to the hundredths
place)
HELLOPPPPP PLEASEEE ):
Answer:
5.0 moles
Explanation:
213/390 x 9.22 = 5.04
Round to least sig fig (390 ml)
5.0
Which process is exothermic?
a) the vaporization of water b) the freezing of water c)the sublimation of dry ice d ) the boiling of liquid nitrogen
Answer:
Freezing of water
Explanation:
When water becomes a solid it releases heat into its surroundings (warming it up).
Power gathered from the sun and wind
A
is considered a nonrenewable resource.
B
can provide humans with energy forever.
с
can only be used in the daytime.
D
is not a natural resource.
Answer: B. Can provide humans with energy forever
Explanation: The warm air rises and cooler air rushes in to take its place. The moving air is wind. As long as the sun shines, there will be winds on the Earth. We will never run out of wind energy.
help, also brainly dont be mean and delete this.
if you steal my points, please dont i need genuine help
Answer:
I dont understand what is the question you need help on-
Explanation:
How many molecules are there in 24 grams of HSO₃?
Answer:
1.2×1023 molecules.
hope it helps
WORTH 20 POINTS!! Need answer ASAP
Answer:
i cant see the image im good at chem if you can write it down in the comments ill answer it
Explanation:
A student puts his signature with graphite pencil.
If the mass of carbon in the signature is 10-12g, calculate
the number of carbon atoms in the signature.
Answer:
If the mass of carbon in the signature is 10-12g, calculate. the number of carbon atoms in the signature. the answer is 5.01 x 10^10 atom.
Explanation:
wlcm
please mark me as brainliest
Mg (s) + 2 HCl (aq) --> MgCl2 (aq) + H2 (g)
Use the balanced chemical equation above to determine the number of moles of hydrogen gas that would be produced if 3.50 moles of solid magnesium reacted. please show all work and record your answer with proper units and significant figures.
Pls help
Answer:
2Mg + 4HCl (aq) --> 2 MgCl2 (aq) + H2
Explanation:
balanced...
a force of attraction between objects that is due to their masses and distance between objects
a. gravity
b. weight
c. mass
Answer:
the answer is gravity
hope this helps
Help please!!!!!!!!!! Both questions!!!!
B) A company president would like to offer a 4.00 L cylinder containing 500 g of chlorine in the new catalog. The cylinders you have on hand have a rupture pressure of 40 atm. Use both the ideal gas law and the van der Waals equation to calculate the pressure in a cylinder at 25°C. Given a = 6.58 L2 atm mol-2 and b = 0.056 L mol-2, Cl =35.5. (5 marks)
Answer:
43.1atm is the pressure using gas law and 27.2atm using Van der Waals Law.
Explanation:
Ideal gas law is:
PV = nRT
Where P is pressure in atm
V is volume = 4.00L
n are moles of the gas (For chlorine Molar Mass: 70.90g/mol):
500g * (1mol / 70.90g) = 7.052 moles
R is gas constant = 0.082atmL/molK
T is absolute temperature = 25°C + 273 = 298K
To solve the pressure, P:
P = nRT/V
P = 7.052mol*0.082atmL/molK*298K / 4.00L
P = 43.1atm is the pressure using gas law.
Van der Waals equation is:
[tex]P + a(\frac{n}{V})^2 * (V-nb) = nRT[/tex]
Where a is 6.58L²atm*mol⁻²
b = 0.056Lmol⁻²
Solving for pressure:
[tex]P + a(\frac{n}{V})^2 = \frac{nRT}{(V-nb)}[/tex]
[tex]P = \frac{nRT}{(V-nb)}-a(\frac{n}{V})^2[/tex]
[tex]P = \frac{7.052mol*0.082atmL/molK*298K}{(4.00L-7.052mol*0.056L*mol)}-6.58L^2mol^{-2}(\frac{7.052mol}{4.00L})^2[/tex]
P = 172.323 / 3.6051 - 20.4866
P = 27.2atm using Van der Waals Law
why hydroxide an oxidation reaction??
Answer:
sorry I didn't know this one i did all the work and stuff and still couldn't get it sorry
How much concentrated 15.54 M sulfuric acid is need to prepare 6.1 mL of a 2.28 M solution?
Answer:
0.895 mL
Explanation:
Using the formula;
C1V1 = C2V2
Where;
C1 = initial concentration (M)
C2 = final concentration (M)
V1 = initial volume (mL)
V2 = final volume (mL)
According to the information provided in this question;
C1 = 15.54M
V1 = ?
C2 = 2.28M
V2 = 6.1 mL
Using C1V1 = C2V2
V1 = C2V2 ÷ C1
V1 = (2.28 × 6.1) ÷ 15.54
V1 = 13.908 ÷ 15.54
V1 = 0.895 mL
890J of heat are applied to a piece of aluminum, causing a 4.6°C increase in its temperature. The specific heat of aluminum is 0.902 J/g°C. What is the mass of aluminum?
Question 12 options:
175g
3,693g
214g
0.00220g
Answer:
214
Explanation:
Q=mco
Q=heat
M is mass
C is specific heat
O is increased in temperature