Answer:
4cro3=2cr2o3+3o2
Explanation:
on left hand side there is 4cr and 12o where as now on wright hand side we have 4cro6+6o which makes 4cr and 12o which is equal to the left hand side.
Answer:
4CrO3====> 2 Cr2O3 + 3O2
Explanation:
Before dealing with the Cr, I think you might want to deal to work with the oxygen in Cr2O3
You might want to turn that into an even number. You could put a 2 in front of the Cr2O3, but looking ahead, I can see that will give you a fractional amount for the O2. So I'll use a 4
CrO3 ===> 4 Cr2O3 + O2
That means you have 8 Cr s on the right. Balance that on the left
8CrO3 =====> 4 Cr2O3 + O2
You've balanced The Cr s. So now lets look at the oxygens. There are 8*3 oxygens on the left hand side. The right has 12 + 2. Don't touch the Cr2O3. You are done with them.
You need 12 more oxygens on the right. You have 2. So multiply the Oxygens by 6
8CrO3 ===> 4 Cr2O3 + 6 O2 There's a factor of 2 common. Divide by 2
4CrO3====> 2 Cr2O3 + 3O2
The chlorophyll processes the ingredients to make
(plant food) and
The chlorophyll processes the ingredients to make
(plant food) and
Answer:
oxygen
Explanation:
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The electron configuration below applies to which element? 1s2 2s2 2p6 3s2 3p1
For the elements in the "f-block," how is the row number related to the principal energy level for the last orbital notation of their electron configurations?"
Answer:
See explanation
Explanation:
Given that the row number is the same as the period or energy level(shell) in which the electron is found.
If we designate this row number as "n", we know that the highest principal energy level for the f orbitals is obtained as (n-2) f.
Thus, we obtain the highest principal energy levels for the "f block" elements by subtracting 2 from the row number.
What voltage will produce 3 A through a circuit that has 15
ohms of resistance?
Answer:
5 ohms of resistance
Explanation:
15/3=5
Long form EC for Aluminum
which description shows copper at rtp?
Answer:
It is malleable, ductile, and an extremely good conductor of both heat and electricity. It is softer than zinc and can be polished to a bright finish. It is found in group Ib of the periodic table, together with silver and gold. Copper has low chemical reactivity.
Which of the following groups of elements has two valence electrons and is highly reactive?
Select one:
a. Alkali metals
b. Alkaline-earth metals
c. Halogens
d. Noble gases
Define symbol ..........
Answer:
Hey mate here's your answer ⤵️
a mark or character used as a conventional representation of an object, function, or process, e.g. the letter or letters standing for a chemical element or a character in musical notation.
Hope it was helpfulllnoun: letter, character, sign of written communication
Something used for or regarded as representing something else; a material object representing something,
or a character of some kind
Example:
Often something immaterial; emblem, token, or sign: "$"<< the dollar sign is a symbol used to show / means money
Hope this kinda helped
write down the cell equation. please
Answer:
see explanation
Explanation:
symbiology is (oxidation rxn || reduction rxn)
=> Zn°|Zn⁺² || Cu⁺²|Cu° => Zn°(s) + Cu⁺²(aq) => Zn⁺²(aq) + Cu°(s)
___are organelles found in plant cells. They absorb energy from sunlight and use that energy to drive chemical reactions that produce sugars and oxygen.
Chloroplasts
Hope this helps !!
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what information do the coefficients of a balanced equation give about the reactants
Plz help!
What must change in order to change the amount of power?
Answer:
Mass
Explanation:
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Is C-O a nonpolar or polar covalent bond? why?
Look at position 2 on the roller coaster
Is there more potential or kinetic energy , why ?
how dose the scientist know the substances goes through a change of state during the time period labeled B on the graph?
Answer:
The temperature remains constant
Explanation:
In a plot of temperature against time, it is easy to spot the points on the graph where a change of state is taking place.
During a change of state, the temperature does not not change with time. These are points that are plateaus on the temperature-time graph.
This is because, during phase change, the heat that is added is used in breaking intermolecular forces therefore a temperature change is not observed until the phase change is complete.
explain why the weight of an object changes if taken to the moon but not its mass
Answer:
Because the gravitational force alters
Explanation:
what are the materials needed during photosynthesis?
Which of these equations is balanced?
1. 4Sb + 3O2 → Sb4O6
2. H3 AsO4 → As2O5 + H2O
3. SiO2 + HF → SiF4 + H2O
4. CO2 + NH3 → CO(NH2)2 + H2O
Answer:
the first is the answer
what is a substrate
Answer:
a substrate is surface or material on or from an organism lives, grows, or obtains its nourishment.
Explanation:
Hey I hope this helps.....
Indicate whether each statement is true or false: a. Substitutional alloys tend to be more ductile than interstitial alloys. b. Interstitial alloys tend to form between elements with similar ionic radii. c. Nonmetallic elements are never found in alloys.
Answer:
Substitutional alloys tend to be more ductile than interstitial alloys. true
Interstitial alloys tend to form between elements with similar ionic radii.false
Nonmetallic elements are never found in alloys. false
Explanation:
Substitutional alloys consists components having similar atomic(ionic) radii as well as common bonding characteristics. In interstitial alloys, atoms in interstitial positions must have a much smaller covalent radius than the solvent atoms. Interstitial atoms are generally less ductile than substitutional alloys.
Nonmetals are found in alloys. For instance, carbon is a component of the common alloy called steel.
Which element’s atoms have the greatest average number of neutrons?
Answer:
53
Explanation:
the atomic number is 53, then Number of neutrons=127-53=74 Since, the number of neutrons are large in Tellurium, therefore Tellurium have the greatest average number of neutrons.
explain what happens during the chemical reaction
CaCO3 -> CaO + CO2
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I couldn't find the answer to your question.
Why are prefixes not needed in naming ionic compounds?
Answer:
its A
Explanation:
Answer:
C. Ions combine in only one ratio
Explanation:
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When are kids ready to assume adult responsibilities?
Answer:
18 years old or when they become mature.
Explanation:
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Answer:
a and i thinkc
Explanation:
35.46 g silver nitrate reacts with 52.61 g sodium chloride to produce silver chloride and sodium nitrate.
How much silver chloride solid will be produced?
Here are the steps hope it helps
which line represents the gas state?
Answer: F : Gas
Explanation:
How many atoms of aluminum (Al) are in 3.94 mol of aluminum
Answer:
26.9
Explanation:
that is my answer I try to it