nuclear energy originates from the splitting of urinal atoms a process called fish and degeneracy to produce steam which is used by a turbine generator to generate electricity.
Is the following a physical or chemical change?
Electrolysis of water makes hydrogen and oxygen.
P.s. what is electrolysis?
Answer:
chemical change
Explanation:
electrolysis process by which electric current is passed through a substance to effect a chemical change.
What does steel classify as?
A. Compound
B. Mixture
C. Element
D. Electrons
How many ions are in the following compounds?
a. (NH4)3PO4 =
b. NaCl =
Answer:
A- In (NH4)3PO4 there are four ions in total as three ions of NH₄ and is one ion of PO₄
The force that is pulling down on a person or object on the surface of the Earth is
called (attraction of matter to matter)?
normal force
mass
weight
gravity
OMG PLEASEEEE HELPPPPPPPPPPP!!!!!!!!!!!
Answer:
the second one
Explanation:
THE answers is b
For the reaction ?H2 + ?O2 → ?H2O,
What is the maximum amount of H2O which could be formed from 15.52 mol of H2 and 17.95 mol of O2? Answer in units of g.
Explanation:
H2O, what is the maximum amount of H2O which could be formed from 10.9 g of H2 and 16.03 g ofO2? Answer in units of g. ... 0.500 mol O2 x 2 mol H2O / 1 mol O2 x 18 g H2O/mol H2O = answer in ..
The total mass of the __________________ and __________________ in an atom is the atomic mass.
Fill in the blanks Plzz
Answer:
protons, neutrons
Explanation:
There are three subatomic particles in all atoms: protons, neutrons and electrons. Of these three, only protons and neutrons are considered to have enough mass to contribute to overall atomic mass of the element.
Yes
OO
No
Balanced or Not Balanced? *
2 NaCl + 2 F2 → 2 NaF + 1 C12
Yes
No
Answer:
No, not well balanced
Explanation:
2Nacl+F2=2Naf+Cl2
lithium reacts with bromine
Which of the greenhouse gases are carbon compounds?
Answer:
Methane (CH4),Carbondioxide green house gases are carbon compounds
Carbon dioxide (CO2) and methane (CH4) are two powerful greenhouse gases produced by the carbon cycle.
Unicellular organisms are so small that you usually need a telescope to see them.
True
False
Answer:
true ........
hope it is helpful
HELP PLEASE❗️❗️‼️
An increase in temperature is an increase in.... ( there are two correct answers)
A.) Water molecules
B.) The melting point
C.) pressure
D.) Fun
PLEASE ASAP! i have c,d,e and f but if anyone can do even one of them please help! (igcse y10 btw)
Answer:
C
i) 2 C(s) + O2(g) → 2 CO
ii) Carbon monoxide poisoning occurs when carbon monoxide builds up in your bloodstream. When too much carbon monoxide is in the air, your body replaces the oxygen in your red blood cells with carbon monoxide. This can lead to serious tissue damage, or even death.
D
The iron oxide gets reduced.
The carbon gets oxidised.
E
the reason is that aluminium is more reactive than carbon to be extracted in a blast furnance.an element lying lower in the metal reactivity series can be reduced by carbon (a reducing agent) but aluminum lies above carbon metal series.
F
i) electrolysis.
ii) It is soft and malleable. Aluminium is used in a huge variety of products including cans, foils, kitchen utensils, window frames, beer kegs and aeroplane parts. This is because of its particular properties.
What temperature does neon condensate?
Answer and Explanation:
I believe −246.048 C or −411 F
Long ago, living things were divided into two main groups: _________
Answer:
I think the answer is Prokaryote and Eukaryote
Explanation:
What is the main function of the cell membrane in an animal cell?
Answer:
A cell's plasma membrane, also known as the cell membrane, provides protection. It also maintains a constant atmosphere within the cell, and the membrane serves a variety of purposes. The first is to transport nutrients into the cell, and the second is to transport toxic compounds out
Explanation:
Practice
Write an equation for each of the described reactions. Include subscripts, and state of matter notation as needed.
Don't forget about the diatomic elements!
*Complete this on a separate sheet of lined paper and attach this to the GCR assignment.
1. Solid lithium reacts with water to produce hydrogen gas and a solution of lithium hydroxide.
2. Solid sodium reacts with gaseous chlorine to produce sodium chloride.
3. Solid calcium carbonate breaks down into carbon dioxide gas, oxygen gas, and solid calcium.
4. Solid iron(II) sulfate and a solution of barium chloride react to form solid barium sulfate and a solution of
iron (II) chloride.
5. Solutions of hydrochloric acid and sodium hydroxide react to produce liquid water with sodium chloride
dissolved in it.
Answer and Explanation:
For each reaction, it is useful to detail which are the reactants (left side of the equation) and which are the products (right side of the equation), to deduce the chemical formulas.
1. Solid lithium reacts with water to produce hydrogen gas and a solution of lithium hydroxide.
Reactants: lithium element in solid-state (Li(s)) and water (H₂O) in the liquid-state. Products: hydrogen gas which is a diatomic molecule (H₂) and lithium hydroxide, which is a base formed by lithium cation Li⁺ and OH⁻ anion (LiOH).
Li(s) + H₂O(l) → H₂(g) + LiOH(aq)
2. Solid sodium reacts with gaseous chlorine to produce sodium chloride.
Reactants: sodium metal in solid-state (Na(s)) and chlorine which is a diatomic gas (Cl₂). Products: sodium chloride, which is a salt formed by sodium and chloride together (NaCl).
Na(s) + Cl₂(g) → NaCl(s)
3. Solid calcium carbonate breaks down into carbon dioxide gas, oxygen gas, and solid calcium.
It is a decomposition reaction, so we have only one reactant: calcium carbonate, which is a salt composed of carbonate anion (CO₃⁻²) and calcium ion (Ca²⁺). Products: carbon dioxide (CO₂), oxygen gas which is diatomic (O₂), and solid calcium (Ca(s)).
CaCO₃(s) → CO₂(g) + O₂(g) + Ca(s)
4. Solid iron(II) sulfate and a solution of barium chloride react to form solid barium sulfate and a solution of iron (II) chloride.
Reactants: iron(II) sulfate which is an ionic compound formed by the sulfate ion (SO₄²⁻) and iron ion (with two positive charges: Fe²⁺), and barium chloride which is a salt of barium ion (Ba²⁺) and two chloride ions (Cl⁻). Products: the salts formed by ion exchange, barium sulfate (BaSO₄), and iron (II) chloride (FeCl₂).
FeSO₄(s) + BaCl₂(aq) → BaSO₄(s) + FeCl₂(aq)
5. Solutions of hydrochloric acid and sodium hydroxide react to produce liquid water with sodium chloride dissolved in it.
It is the classical neutralization reaction. Reactants: hydrochloric acid (HCl) and the strong base sodium hydroxide (NaOH). Products: water (H₂O) and the salt formed by the anion provided by the acid (Cl⁻) and the cation provided by the base (Na⁺): NaCl.
HCl(aq) + NaOH(aq) → H₂O(l) + NaCl(aq)
6. Three ice cubes are placed inside a glass of hot chocolate. Which of the following best
explains the heat transfer occurring inside the glass?
bat abanslate
ITS NUMBER 6!!!
PLZZ HELP ASAP!!!
need the names for these asap please
Answer:
3_ethylpentane
4_ethylheptane
1_pentene
3_hexene
For an organism’s scientific names, the first part is the ________ and the second is the ________.
A
species, genus
B
kingdom, phylum
C
genus, species
D
class, order
Answer:
C
Explanation:
For an organism scientific names the first part is the genus and the second is the species
For an organism’s scientific names, the first part is the genus and the second is the species. Therefore, the correct option is option C.
What is organism’s scientific name?The genus name and particular epithet make up the binomial name. Italicization is used for species names. The specific epithet comes after the genus name and therefore is not capitalized; the genus name is usually capitalized and written first. This is true without exception.
A scientific name has two components. Genus name comes first, followed by species name. If typed, it is always in italics or underlined (handwritten). Genus names always begin with a capital letter. The initial letter of the word species is not capitalized, though. For an organism’s scientific names, the first part is the genus and the second is the species.
Therefore, the correct option is option C.
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Plz help, will give brainliest!
Answer:
C
Explanation:
No change.
The total number moles of products = The Total number of reactants
The chemical equation, Cr + Fe(NO3)2 → Fe + Cr(NO3)3, is an example of which type of reaction?
Answer:
Redox type
Explanation:
The reaction is:
2Cr + 3Fe(NO₃)₂ → 2Fe + 2Cr(NO₃)₃
2 moles of chromium can react to 3 moles of iron (II) nitrate in order to produce 2 moles of iron and 2 moles of chromium nitrate.
If we see oxidation state, we see that chromium changes from 0 to +3
Iron changed the oxidation state from +2 to 0
Remember that elements at ground state has 0, as oxidation state.
Iron is being reduced while chromium is oxidized. Then, the half reactions are:
Fe²⁺ + 2e⁻ ⇄ Fe (Reduction)
Cr ⇄ Cr³⁺ + 3e⁻ (Oxidation)
When an element is being reduced, while another is being oxidized, we are in prescence of a redox reaction.
CH4 and CO₂ are the chemical formulas for:
Answer:
CH4 = Methane
CO2 = Carbon dioxide
Hope this Helps!!Hope this Helps!!:)There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. Therefore, the name of CH[tex]_4[/tex] and CO[tex]_2[/tex] are Methane and Carbon dioxide respectively.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
Covalent compounds are formed by covalent bond and ionic compounds are formed by ionic bond. Covalent bond is formed by sharing of electron and ionic bond are formed by complete transfer of electron. Ionic bonds are stronger than covalent bonds. The melting and boiling points are higher in ionic compounds.
chemical formula Chemical name
CH[tex]_4[/tex] Methane
CO[tex]_2[/tex] Carbon dioxide
Therefore, the name of CH[tex]_4[/tex] and CO[tex]_2[/tex] are Methane and Carbon dioxide respectively.
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I have a chemistry writing promp but it’s asking questions here the prompt: What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen? State three potential molecular formulas from the empirical formula in A. If the molecular formula mass in A is 760 grams/mol, what is the molecular formula? WIll the molecular and empirical formulas in A and D have the same characteristics? Why or why not?
Explanation:
1. Find the empirical formula of a compound that has 36.84% of Nitrogen (N), 63.16% of Oxygen (O).
Secondly, Find molar mass of each component: N=14.0067, O=15.9994
Thirdly, convert to moles: N=2.6301698472874, O=3.9476480368014
Then find smallest mole value: 2.6301698472874
Divide all components my smallest value: N=1, O=1.5009099282591
Then divide by fractional component of each mole value: N=1.9963668986866, O=2.9963668986866
Round to closest whole numbers: N=2, O=3
Lastly, combine to get the empirical formula:N2O3
HELP ME PLZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What happens when something reaches absolute zero?
Question 5 options:
1)There are no particles left in it
2)The particles completely stop moving
3)The particles are vibrating at a rate greater than the speed of light
4)There is no such thing as absolute zero
Answer:
There's no such thing as absolute zero
Answer:
I think number 1 but if wrong report me
How many grams are in 8.50 e 23 formula units of NaCl?
a)82.5 g
b)8.25 g
c)85.0 g
d)91.5 g
Answer:
a)82.5 g
Explanation:
To solve this problem we will use Avogadro's number, which states the number of formula units per mole.
8.50x10²³formula units ÷ 6.023x10²³ formula units/mol = 1.41 molThen we convert 1.41 moles of NaCl to grams, using its molar mass:
1.41 mol NaCl * 58.44 g/mol = 82.4 gThe closest answer is option a).
The kinetic molecular theory, explains how particles in matter behave.
True
False
Answer:
true
Explanation:it is hard to explan
Which of the following BEST describes what DNA looks like?
Answer:
You didn't provide any options but from this, choose the answer in your options.
DNA has a double helix structure. It creates an extremely thin spiral that can not be seen to the naked human eye. It contains sugar and phosphate molecules. The spiral contains colored nitrogenous bases.
5. What is characteristic of an opaque object.
Help me pretty please
Answer:
C
Explanation:
Answer:
I think ur answer would be C.)
Explanation:
hope this helps