Answer:
50
Explanation:
10 x 5 = 50
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
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 of the following is a way to decrease the pressure of a gas?
A. Increase the number of molecules
B. Increase the volume
C. Decrease the volume
Answer:
b
Explanation:
because pressure is inversely proportional to volume.
Also with a larger volume the gas particles will collide less on each other and the walls of the container
A way to decrease the pressure of a gas is to decrease the volume.
What are ways to increase the pressure of a gas?
Three Ways to Increase the Pressure of a Gas
Increase the amount of gas.Increase the temperature of the gas.Decrease the volume of the gas.What are the 3 factors that affect gas pressure?Temperature, pressure, volume, and the amount of a gas influence its pressure.
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I really need help with this chemistry assignment multiple choice
Answer:
b option to is correct and answer bro
Which of the following substances
represents a compound?
A. saline: NaCl and H,0
B. helium: H
c. carbon dioxide: CO
D. iron; Fe
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:
An alkene with molecular formula C4H8 reacts with bromine to form a compound with molecular formula C4H8Br2 What is the name of this type of reaction?
It is a type of of addition combination chemical reaction where in bromine adds across the double bonds of butane whose chemical equation is C₄H₈ +Br₂[tex]\rightarrow[/tex]C₄H₈Br₂.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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Substances that can carry electric current under some conditions but not under others are called semiconductors.
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
this is actually science but anyways my teacher didn't explain much can someone help?
WILL GIVE BRAINLIEST ANSWER!!!
How many moles of hydrogen are required to produce 6 moles of water?
Answer: 6 moles
Explanation:
The balanced equation for this reaction is [tex]2\text{H}_{2}+\text{O}_{2} \longrightarrow 2\text{H}_{2}\text{O}[/tex].
This means that for every 2 moles of water produced, 2 moles of hydrogen are consumed.
Thus, if 6 moles of water are produced, this means 6 moles of hydrogen are consumed.
NH, (aq) + H.,000
NH(aq) + OH(aq)
Water is acting as which of the following?
O Acid
O Base
O Conjugate Base
O Conjugate Acid
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
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
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.
How many grams of chlorine gas react when 266.28 grams of aluminum reacts?
2Al(s) + 3Cl2 (g) --> 2AlCl3 (s) (balanced)
Answer:
To solve this question first find the molar mass of Aluminum and then convert the amount grams of Aluminum to moles of aluminum and then use the mole to mole ratio to determine the moles of Chlorine gas that would have reacted with the moles of Aluminum, and then after convert that many moles into grams to find the solution to this question.
what is
the sum total of all water on earth and its atmosphere is called
Answer:
Biosphere.
Explanation:
bgsgsgdvxvhshsmxhndgdnhdhbd
A .332 mold sample of gas at a constant pressure and temperature has a volume of 150.0mL. If the volume of the gas is decreased to 50.0mL, how many moles of the gas will remain
Answer:
0.111 mol
Explanation:
We can solve this problem by using Avogadro's law, which states that at constant pressure and temperature:
V₁n₂=V₂n₁Where in this case:
V₁ = 150.0 mLn₂ = ?V₂ = 50.0 mLn₁ = 0.332 molWe input the data given by the problem:
150.0 mL * n₂ = 50.0 mL * 0.332 molAnd solve for n₂:
n₂ = 0.111 molPLEASE ANSWER IF YOU KNOW
Which biome has an average winter temperature of -26 degrees Celsius, gets 12-20 inches of rain per year, and has grazing caribou?
Answer:
The tundra!
Explanation:
It is the only biome that has an average winter temperature of -26 degrees Celsius, gets 12-20 inches of rain per year, and has grazing caribou!
Hope this helps!
[tex] \huge\mathcal\colorbox{red}{\color{pink}{質問 ↷}}[/tex]
what are Noble Gases?
Answer:
any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 0 (18) of the periodic table. They were long believed to be totally unreactive but compounds of xenon, krypton, and radon are now known.
Explanation:
The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).
How many molecules are there in 24 grams of HSO₃?
Answer:
1.2×1023 molecules.
hope it helps
Which statement about light energy is incorrect?
A. Light energy travels as electromagnetic waves
B. We can only see light if the wavelengths are in a
certain part of the electromagnetic spectrum
C. Refraction is when light bends as it passes through
another medium
D. Light is absorbed at a higher rate if the color of the
object it hits is brighter
Answer:
The correct answer is C
Explanation:
light refracts whenever it travels at an angle into a substance with a different refractive index(optical density)
help asap!!
The higher the concentration of a sample of dilute sulfuric acid, the greater the volume of sodium hydroxide needed to neutralise the acid. A student tested 2 samples P and Q. Describe how the student could use titration to find out which sample P or Q is more concentrated
This problem is providing information about the titration of sulfuric acid with sodium hydroxide in order to neutralize the acid. It is required to describe how to find out the difference concentration on P and Q via titration.
In such a case, we should firstly write out the chemical reaction that takes place when sulfuric acid is neutralized by sodium hydroxide to form sodium sulfate and water:
[tex]2NaOH(aq)+ H_2SO_4\rightarrow Na_2SO_4 (aq)+2H_2O(l)[/tex]
The aforesaid means that at the equivalence point, the following equation will be valid for the moles of the acid and the base:
[tex]2n_{acid}=n_{base}[/tex]
Which can be written in terms of volume and concentration for the both of them:
[tex]2M_{acid}V_{acid}= M _{base} V_{base}[/tex]
Thus, we can solve for the molarity of the acid to obtain:
[tex]M_{acid}= \frac{M _{base} V_{base}}{2V_{acid}}[/tex]
This equation can be used to calculate the molarity of both samples of acid, if you know their volume, the concentration of the base and its volume, which are measurements and values you can obtain from your experiments.
Learn more:
https://brainly.com/question/25485091https://brainly.com/question/12758584Power 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.
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.
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.
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Below is a chemical equation. Which of the following are identified by the blue arrows?
Captionless Image
atomic numbers
coefficients
products
subscripts
Coral reefs are essential for the survival of other organisms. They provide::
A. Microhabitats
B. Shelter
C. Breeding grounds
D. All of the above
“Science”
help me get this right no links
I think you forgot to upload the image. Create a new question including the image so that we can see the question.
molecules can be dissolved? Why?
Answer:
Dissolving is when the solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules. This break up is caused by coming into contact with the solvent. In the case of salt water, the water molecules break off salt molecules from the larger crystal lattice.
Explanation:
Answer:
Gases can dissolve in water. The dissolving of a gas in water depends on the interaction between the molecules of the gas and the water molecules. The amount of gas that can be dissolved in water depends on the temperature of the water. More gas can dissolve in cold water than in hot water.
Explanation: