Answer: The limiting reagent is CO and 8.0 mol Fe will be formed.
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:
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
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.
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
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
[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).
What could happen if yours was damaged or malfunctioning?
Answer:
You may experience the sudden onset of one or more symptoms, such as: Numbness, tingling, weakness, or inability to move a part or all of one side of the body (paralysis). Dimness, blurring, double vision, or loss of vision in one or both eyes. Loss of speech, trouble talking, or trouble understanding speech.
Answer:
Stress, infection and changes in your blood's fluid and electrolyte balance can also influence hormone levels.
Explanation:
why should the wearing of uniforms be discontinued in highscho
Summary
1.
Water is the most abundant substance on the surface of the earth.
About 71% of the earth's surface is covered by water.
2. Hydrogen is prepared in the laboratory by the action of zinc on
dilute hydrochloric acid or dilute sulphuric (VI) acid.
3. Hydrogen burns in oxygen to produce water. Water is an oxide
of hydrogen.
4. Active metals react with cold water to produce hydrogen gas
and the hydroxide of the metal in solution. Less active metals
react with steam to produce hydrogen and the oxide of the metal.
Copper and lead do not react with water.
5. Hydrogen is a reducing agent. It removes combined oxygen
from metal oxides of the less reactive metals.
6.
Reduction is the loss of oxygen from a compound. Oxidation is
the gain of oxygen by a substance.
7.
A reducing agent is a substance which removes oxygen from
another substance. An oxidising agent is a substance which gives
out oxygen to another substance.
when
water changes the
colour of coppe - 11
Revision Exercise sulphatorom blueto
1. (a) State the chemical tests for presence of water.
water change the color
(b) State the test, which is used to show that water is pure. Chistide paper from b
of copper anhydrous cobele
2.
Describe an experiment to show that water is an oxide of hydrogen.t non
3. State the precautions that must be taken when carrying out experiments with hydrogen.
Why is it not advisable to use iron in making steam boilers?
Write a word equation for a reaction in which hydrogen acts as a reducing agent.
Name the products formed when kerosene is burned in air.
State what is observed when a small piece of potassium is placed in water. Write a
word equation for the reaction.
Draw a labelled diagram to show how a reaction between steam and magnesium should
be carried out.
Describe how dry hydrogen is prepared in the laboratory.
Property of the Government of Kenya
Potassium
sodium
Calcim
Magne
Alun
Corbi
Zin
Explanation:
I know only one.You are in form.....
I really need help with this chemistry assignment multiple choice
Answer:
b option to is correct and answer bro
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)
Substances that can carry electric current under some conditions but not under others are called semiconductors.
Which of the following substances
represents a compound?
A. saline: NaCl and H,0
B. helium: H
c. carbon dioxide: CO
D. iron; Fe
what is
the sum total of all water on earth and its atmosphere is called
Answer:
Biosphere.
Explanation:
bgsgsgdvxvhshsmxhndgdnhdhbd
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).
What is deforestation?
A
the process of finding medicine ingredients in the rainforest
B
the planting of new trees on empty land
с
the process by which trees soak up carbon dioxide
D
the cutting down of existing forests
Answer:
D.
Explanation:
The action of clearing a wide area of trees.
Is oil a no renewable energy source
Answer:
Yes, oil is a non renewable energy source
Explanation:
Because once these resources are used up, they cannot be replaced.
Answer:
yes its a nonrenewable resource because once you use it you cant put it back
Explanation:
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 molAl2(SO4)3 + CaCl2 → AlCl3 + CaSO4
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.
this is actually science but anyways my teacher didn't explain much can someone help?
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/12758584An 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.
Learn more about chemical equation,here:
https://brainly.com/question/28294176
#SPJ6
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.
help me get this right no links
Answer:
The moons gravitational pull on Earth
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.
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”
Which field of study examines homologous structures?
A) Genetics
B) Embryology
C) Comparative Anatomy
D) Physics