Answer: [tex]Cu+NO_3^-+2H^+\rightarrow Cu^{2+}+NO_2^-+H_2O[/tex]
Explanation:
Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.
Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.
[tex]Cu\rightarrow Cu^{2+}+2e^-[/tex] (1)
Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.
[tex]NO_3^-+2e^-+2H^+\rightarrow NO_2^-+H_2O[/tex] (2)
Combining (1) and (2) we get:
[tex]Cu+NO_3^-+2H^+\rightarrow Cu^{2+}+NO_2^-+H_2O[/tex]
The balanced reaction equation for the reaction described in the question is; Cu + NO3^- + 2H^+ ------> Cu^2+ + NO2^- + H2O
What is a balanced reaction equation?
An equation is said to be balanced when the total number of atoms of each element on the right hand side of the reaction equation is equal to the total number of atoms of the same element on the left hand side of the reaction equation.
The balanced reaction equation for the reaction described in the question is; Cu + NO3^- + 2H^+ ------> Cu^2+ + NO2^- + H2O
Learn more about reaction equations: https://brainly.com/question/1170557
___________ is the least reactive metal.
i. Silver
ii. Iron
iii. Gold
iv. Sodium
A company uses chlorine to produce titanium chloride from titanium dioxide.
What is the relative formula mass (Mr) of titanium dioxide, TiO2?
Relative atomic masses (Ar): O = 16 Ti = 48 *
Answer:
80 g/mol
Explanation:
The Relative formular mass is the sum of the relative atomic masses of the elements present in the molecule.
TiO2;
There is one Ti atom and 2 O atom. Their atomic masses is given as;
TiO2 = 48 + 2(16) = 48 + 32 = 80 g/mol
What happens when chromium nitrate is added to distilled water
Answer:
It does not react with water, but reacts with most acids
Explanation:
Answer:
It doesn't react with water, but reacts with most acids
Are substances that taste bitter and feel slippery to the skin
Answer:
Explanation:
Bases are the substances which have a bitter taste and feel slippery.Sulfuric acid is the most widely made industrial chemical in the world. It is used to make many products, including paper, paint, detergents, and fertilizers. Car batteries contain sulfuric acid. Feel The properties of a base solution include a bitter taste and a slippery feel.
Fill in the blanks
At rest the frog breathes through________
Answer:
a process called predominate?
Answer:
the lining of the mouth
Explanation:
its in their predominate form
who is princess tianas best friend, if you can get her name right then ill give you brainliest
Answer:
Oo i think her name is Tiana..... ❤️❤️Answer:
Charlotte La Bouff
Explanation:
"Lottie" if you will
PLEASE HELP ITS PAST DUE IM GIVING BRAINLIEST
Answer:
it will option A . hope it helps
Answer:
options A
Explanation:
the balloon filled up because of the formation of gas bubbles
The electron has a negative charge.
True
False
Answer:
true :)
Explanation:
have a great day!!
atoms, predict the ratio of metal cationic (+) atom
to nonmetal anionic (-) atom in the compound.
Lithium 1s22s1
Chlorine 1s22s22p6 3s23p5
A. 1:1
B. 1:2
C. 2:1
D. 3:1
D. 3:1
Answer:
A. 1:1
Explanation:
Lithium 1s2 2s1
Chlorine 1s2 2s2 2p6 3s2 3p5
Lithium is a group 1 element. When it forms a compound, it loses it's one valence (outermost) electron.
Chlorine is a group 7 element. When it forms a compound, it gains one electron to achieve a stable electronic configuration.
Since Li loses one electron and Cl gains one electron. The formular of the compound formed would be;
LiCl
The correct option is;
A. 1:1
6. Un átomo de sodio tiene 11 protones, 12 neutrones y 11 electrones, a) ¿cuál es la masa en gramos de este átomo de sodio? b) Si este átomo de sodio pierde un electrón para quedar cargado positivamente (Na+1) ¿Cuál es su nueva masa? ¿cuánto cambió en porcentaje con respecto a la masa original (la del literal a))? c) Si todos los átomos de sodio fueran iguales ¿cuántos átomos de sodio hay en un miligramo?
Answer:
a. 3.851301x10⁻²³g
b. La masa del Na⁺ es 3.85121x10⁻²³g y 0.002% es el cambio percentual.
c. 2.6x10¹⁹ átomos hay presentes.
Explanation:
a. La masa de un electrón es 9.1x10⁻²⁸g
La de un protón es 1.673x10⁻²⁴g
La de un neutrón es 1.675x10⁻²⁴g
La masa del átomo de sodio es:
11*1.673x10⁻²⁴g + 12*1.675x10⁻²⁴g + 11*9.1x10⁻²⁸g =
3.851301x10⁻²³gb) Ahora, con 10 electrones la masa es:
11*1.673x10⁻²⁴g + 12*1.675x10⁻²⁴g + 10*9.1x10⁻²⁸g =
3.85121x10⁻²³gEl cambio percentual es:
3.851301x10⁻²³g - 3.85121x10⁻²³ / 3.851301x10⁻²³ * 100 =
0.002% es el cambio percentual.c. 1 átomo de sodio pesa 3.851301x10⁻²³g, 1mg = 1x10⁻³g tendrán:
1x10⁻³g * (1 átomo / 3.851301x10⁻²³g) =
2.6x10¹⁹ átomos hay presentesWhat do you think will happen if you put it above the tube that is over the hot soil?
Answer:
what is "it"
Explanation:
if it's a liquid it will boil
if it's a chemical it could burn or catch on fire
1.25 x 10^12 molecules H2SO4 to moles
2.08 × 10⁻¹² mol H₂SO₄
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
1.25 × 10¹² molecules H₂SO₄
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: [tex]\displaystyle 1.25 \cdot 10^{12} \ molecules \ H_2SO_4(\frac{1 \ mol \ H_2SO_4}{6.022 \cdot 10^{23} \ molecules \ H_2SO_4})[/tex]Multiply/Divide: [tex]\displaystyle 2.07572 \cdot 10^{-12} \ moles \ H_2SO_4[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
2.07572 × 10⁻¹² mol H₂SO₄ ≈ 2.08 × 10⁻¹² mol H₂SO₄
______ meters = 177 millimeters
Answer:
117 millimeters = 0.117 meters
Explanation:
This is using unit conversions. There are 1000 millimeters in 1 meter, so you would divide your starting value, 117 millimeters by 1000 millimeters. The units will cancel because they are being divided by themselves and you are left with 0.117 meters.
Can Someone Please help me answer this question? I will try to give brainliest.
Answer:
I believe the answer is y-axis
Explanation:
Sorry if it's not I just wanted to help you in return for helping me!!
Answer:
Y axis I think
Explanation:
please I don’t get this at all someone help
In Period 2, as the elements are considered from left to
right, there is a decrease in
A. Nonmetallic character
b metallic character
C atomic mass
D ionization energy
Answer:
it will option B ,hope it helps
How are different elements determined?
How many significant figures are in this measurement: 1,250,500
Bubbles are released when nitric acid is added to a potassium carbonate solution.
What is the net ion
Is the following chemical equation balanced?
C₁₀H₂₂ + 31 O₂ ⟶ 20 CO₂ + 22 H₂O
Answer:
Yes- i balanced it-
Explanation:
Please help!! I'll name you brainliest!!
Answer:
lost is the answer to this question but if I am wrong I am so sorry for that
How many electrons do nonmetal atoms tend to gain when forming ions?
A. One or two
B. A number equal to their number of valence electrons
C. Only one
D. Enough to fill their valence shell
Answer:
D
Explanation:
I got that right:)
Nonmetal atoms tend to gain enough electrons to fill their valence shell when forming ions.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
Learn more about atom,here:
https://brainly.com/question/13981855
#SPJ6
What is the total amount of heat needed to change 2.25 kg of silver at 0.0°C to 200.0°C? The specific heat of silver is 0.129 J/g·°C (2.25 kg = 2250 g)
Answer:
Q = 5805 Joules.
Explanation:
Given the following data;
Mass = 2250g
Specific heat capacity of silver = 0.129 J/g·°C
Initial temperature, T1 = 0.0°C
Final temperature, T2 = 200.0°C
To find the quantity of heat needed;
Heat capacity is given by the formula;
[tex] Q = mcdt[/tex]
Where;
Q represents the heat capacity or quantity of heat. m represents the mass of an object. c represents the specific heat capacity of water. dt represents the change in temperature.dt = T2 - T1
dt = 200 - 0
dt = 200°C
Substituting the values into the equation, we have;
[tex] Q = 225*0.129*200[/tex]
Q = 5805 Joules.
Therefore, the amount of heat needed is 5805 Joules.
Given values:
Mass, [tex]m = 2250 \ g[/tex]Specific heat capacity, [tex]0.129 \ J/g.^{\circ} C[/tex]Initial temperature, [tex]T_1 = 0.0^{\circ} C[/tex]Final temperature, [tex]T_2 = 200.0^{\circ} C[/tex]then,Change in temperature, [tex]dt = T_2-T_1[/tex][tex]= 200-0[/tex]
[tex]= 200^{\circ} C[/tex]
As we know the formula,
→ Heat capacity, [tex]Q = mcdt[/tex]
By substituting the values, we get
[tex]= 225\times 0.129\times 200[/tex]
[tex]= 5805 \ Joule s[/tex]
Thus the above answer is right.
Learn more about heat here:
https://brainly.com/question/20846683
4 Fe + 6 H₂O + 3 O₂ → 4 Fe(OH)₃
Police found 10 grams of Fe(OH)₃ on the knife. Convert grams of rust (Fe(OH)₃) into grams of iron (Fe) to see if the knife contained enough to murder the butler.
345 g Fe
5.22 g Fe
7.34 g Fe
2.95 g Fe
how many mililiters is 0.55 L
Answer:
It's 550 milliliters.
Explanation:
I hope this helps.
If a section of DNA has 15% thymine, how much adenine will it have?
1. 15%
2. 30%
3. 60%
4.85%
Answer:
15% adenine
Explanation:
Thymine and adenine are a nitrogenous base pair so they would equal the same.
Which processes occur when energy is removed from a substance
Answer:
Note that melting and vaporization are endothermic processes in that they absorb or require energy, while freezing and condensation are exothermic process as they release energy.
Please help will give brainless and 10 points each balance the equation
Answer:
Barium Chloride + Aluminum Sulfate = Barium Sulfate + Aluminum Chloride
Explanation:
Hopefully this helps you!!
Don't be afraid to correct me if i'm wrong! :)
Hold the slides for observation
2 Hgo 2 Hg + O2
1. How many grams of mercury (Hg) can be
produced from 3.55 moles of Hgo?
Answer:
712 moles of Hg are produced
Explanation:
Based on the reaction:
2HgO → 2Hg + O₂
Where 2 moles of HgO reacts producing 2 moles of Hg and 1 mole of O₂
To solve this question we need to find the moles of Hg produced, then, using its molar mass:
Moles Hg:
3.55mol HgO * (2 mol Hg / 2 mol HgO) = 3.55 mol Hg
Grams -Molar mass Hg: 200.59g/mol-:
3.55mol Hg * (200.59g/mol) =
712 moles of Hg are produced
