Answers
Related Questions
Which of the following is a pH for a base?
Question 4 options:
1
13
7
5
Answers
Answer:
is 7.................
Which substance is not produced during the electrolysis of concentrated aqueous sodium chloride?
A) Chlorine
B) Hydrogen
C) Sodium hydroxide
D) Sodium chloride
Answers
The substance is not produced during the electrolysis of concentrated aqueous sodium chloride is D) Sodium chloride
Which substance is produced for the duration of the electrolysis of concentrated aqueous sodium chloride?
while an electric current is handed via concentrated sodium chloride answer, hydrogen gasoline bureaucracy at the negative electrode, chlorine gas bureaucracy at the fantastic electrode, and an answer of sodium hydroxide also form.
What occurs whilst the concentrated answer of sodium chloride is electrolyzed?(a) when a concentrated solution of sodium chloride (brine) is electrolyzed, it gets decomposed. this is a decomposition reaction. the products of this reaction are sodium hydroxide, chlorine, and hydrogen.
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Which of the following is an ion?
Answers
A red-colored female New Hampshire Red chicken mated with a red-colored male New Hampshire Red chicken and produced golden-colored offspring. Which statement best explains how the offspring could inherit a trait not shown in the phenotypes of either parent?
Answers
Answer:
See the answer below
Explanation:
The statement that could best explain how the offspring could inherit a trait not shown in the phenotypes of either parent would be that both parents are heterozygous for the red color.
Heterozygous parents can produce offspring with a phenotype that is distinctly different from that of either parent if the recessive alleles come together during random fusion of gametes.
Let us assume that the red color (R) in the New Hampshire chicken is the dominant one and the recessive one is the golden color (r). The genotype of the heterozygous parents would be Rr.
Rr x Rr
RR Rr Rr rr
There is a probability (1/4) of producing a golden color chicken (rr), a trait that is not displayed in either of the parents.
formula for Tricarbon heptabromide.
Answers
PLEASE HELP I WILL GIVE BRAINLIEST
2. For the graph to the left, what is the independent variable? ___
3. For the graph to the left, what is the dependent variable? ___
Answers
Answer:
Independent is x, which is the time.
Dependent is y, which is the distance.
What is the formula for the compound that contains Na+ and No3
Answers
Answer:
NaNO3
Explanation:
NO3^-1 has a charge of minus 1.
Na^+1 has a charge of +1
When they combine, the charges are not noted. You get NaNO3
Sodium Nitrate
Use the balanced equation given below to solve the following problem; Calculate the volume in liters of CO produced by the reaction of 175 g of Sb2O3.
Sb2O3 + 3 C --> 2 Sb + 3 CO
40.3 L CO
7.81 L CO
20.2 L CO
13.4 L CO
Answers
Answer: 40.3 L
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} Sb_2O_3=\frac{175g}{291.5g/mol}=0.600moles[/tex]
[tex]Sb_2O_3+3C\rightarrow 2Sb+3CO[/tex]
According to stoichiometry :
1 moles of [tex]Sb_2O_3[/tex] produces = 3 moles of [tex]CO[/tex]
Thus 0.600 moles of [tex]Sb_2O_3[/tex] will produce=[tex]\frac{3}{1}\times 0.600=1.80moles[/tex] of [tex]CO[/tex]
Volume of [tex]CO=moles\times {\text {Molar volume}}=1.80moles\times 22.4L/mol=40.3L[/tex]
Thus 40.3 L of CO is produced.
Which of the following is necessary for photosynthesis?
OA.
OB.
OC.
OD.
calcium
water
glucose
Oxygen
Answers
Answer:
OB
Explanation:
Water is necessary. Since during photosynthesis water reacts with carbon dioxide to form glucose and oxygen.
Calcium is a big NO!!.
2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)
how many atoms are in 3.2 moles of KCl?
Answers
Answer:
If u use math why It will give u the answer like 3x3=9
Explanation:
Metal
Nickel
Silver
Lead
Mercury
Density (g/cm)
8.9
10.5
11.35
13.55
Mr. Keans's class is doing a lab to determine the identity of an unknown metal. Use the table to help determine
the identity of a metal that has a mass of 89 grams and occupies 10 cm of space.
O Nickel
O Silver
O Lead
O Mercury
Answers
Answer:
[tex]\boxed {\boxed {\sf A. \ Nickel}}[/tex]
Explanation:
First, we must find the density of the unknown metal.
Density is found by dividing the mass by the volume.
[tex]d=\frac{m}{v}[/tex]
The mass of the metal is 89 grams and the density is 10 cubic centimeters.
[tex]m= 89 \ g \\d= 10 \ cm^3[/tex]
Substitute the values into the formula.
[tex]d=\frac{89 \ g}{10 \ cm^3}[/tex]
Divide.
[tex]d= 8.9 \ g/cm^3[/tex]
Now we know the density and can identify the unknown metal.
Nickel: 8.9 g/cm³Silver: 10.5 g/cm³Lead: 11.35 g/cm³Mercury: 13.55 g/cm³The density matches nickel's density. Therefore, this metal must be nickel.
What Is It?
Imagine you find a bowl filled
with clear liquid in your kitchen. List three liquids it might be. Describe how you could use the liquid's physical and chemical properties to determine which of the three it is.
Answers
Answer:
physical
Explanation: water can change from solid to liquid to a gas
HELLLLLLP PLZ PLZ PLZ PLZ ASAP
Answers
Answer:
H
Explanation:
Answer:
H
Explanation:
Because an object in motion will stay in motion, unless acted upon by another object
Pls add me to brain list plssss
How are amplitude modulation and frequency modulation techniques similar?
Both are used by cell phones to produce images.
Both transform electrical signals into sound waves.
Both modify the pulse of a carrier wave.
Both are used by radio stations to transmit sound.
Answers
Answer:
D. Both are used by radio stations to transmit sound
Explanation:
The main difference between both modulations is that in frequency modulation, the frequency of the carrier wave is modified as per the transmit data, while in amplitude modulation, the carrier wave is modified according to the data. because of this it can NOT be A, B, or C but it CAN be D
PLZ MARK AS BRAINLIEST :)
The amplitude modulation and frequency modulation techniques similar as , Both are used by radio stations to transmit sound.
So, option D is correct one.
What is difference between amplitude modulation and frequency modulation techniques ?The primary distinction between the two types of modulation is that , amplitude modulation modifies the carrier wave in accordance to data, frequency modulation modifies the carrier wave's frequency according to the transmit.The frequency modulation operates between 88 and 108 MHz and the amplitude modulation operates between 535 and 1705 KHz.learn about amplitude modulation
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What are the circles around the nucleus called
Answers
Answer:
Electron Shells
Outermost level: Valence level
Explanation:
The number of atoms of any element in the given chemical formula is the number that is written on the food of the symbol of that element. The circles around the nucleus called shells or orbits.
What is atom?Atom is the smallest particle of any matter. Atom combines to form element and element combine to form molecule or compound. In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge.
Atom consists of electron, proton and neutron. The total mass of atom is inside the nucleus. Inside the nucleus proton and neutron is there. So calculate mass of an atom, total mass of all protons is added to the total mass of neutron. Electrons revolve around the nucleus in circular path called orbit or shells.
Thus the circles around the nucleus called shells or orbits.
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which best describes the relationship of substance particles in my neutral atom
Answers
Answer: The number of protons equals the number of electrons
Explanation:
The statement that describes the relationship of substance particles in my neutral atom is the number of protons equals the number of electrons. The correct option is C.
What are subatomic particles?Subatomic particles are the charged particles that are present inside the atoms. These particles are electron, proton, and neutron. The electron is negatively charged, a proton is positively charged and neutrons neutrally charges subatomic particle.
Neutron atoms are when there is no positive or negative charge present inside the atoms. This could happen when the negatively charged electron and positively charged proton combine, when negative and positive combines they become neutral.
Thus, the correct option is C. the number of protons equals the number of electrons.
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Your question is incomplete. Your most probably complete question is given below:
the number of electrons equals the number of megatrons
the number of neutrons equals the number of electrons
the number of protons equals the number of electrons
the number of protons equals the number of neutron
MOLES AND MOLAR MASS
Answers
2030g C6H8O7 (1 mol/ 192.124g) = 10.6 mol C6H8O7
(a)² + (b)² = ?
help please
Answers
answer:
a^2+b^2= (a+b)² -2ab
What is measurement?
Answers
Measurement is a process of finding a number that shows the amount of something.
Brainliest? Thanks!
Description
Measurement is the numerical quantitation of the attributes of an object or event, which can be used to compare with other objects or events. ... This system reduces all physical measurements to a mathematical combination of seven base units. The science of measurement is pursued in the field of metrology.
The terms concentrated and dilute are quantitative.
True
False
Answers
Answer:
true
Explanation:
cause thereare both in liquid form
One of the goal's of an atom is:
to give away ALL of its atoms
to have a "full" last orbital shell
to steal as many electrons as possible
Answers
Answer:
to have a "full" last orbital shell
Explanation:
They can not live withought ther outer most shell
Products do what? what do products do in science
Answers
Answer:
In chemistry, a product is a substance that is formed as the result of a chemical reaction. In a reaction, starting materials called reactants interact with each other.
Explanation:
Hope this helps and good luckk :)
What is the number of valance electrons for oxygen
Answers
Answer:
six
Explanation:
Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.
Answer:
Six!
Explanation:
Valence electrons are the electrons in the outermost shell of an atom.
Question 9 of 10
What are the half-reactions for a galvanic cell with Zn and Ni electrodes?
A. Zn2+(aq) + 2e → Zn(s) and Ni2+(aq) + 2e → Ni(s)
B. Zn2+(aq) + 2e → Zn(s) and Ni(s) + Ni2+(aq) + 2e
C. Zn(s) → Zn2+(aq) + 2e and Ni(s) → Ni2+(aq) + 2e
O D. Zn(s) → Zn2+(aq) + 2e and Ni2+(aq) + 2e → Ni(s)
SUBMIT
Answers
Option D. Zn(s) → Zn2+(aq) + 2e and Ni2+(aq) + 2e → Ni(s)
What are half-reactions for a galvanic cell with Zn and Mg electrodes?The emf of a half-cell, with respect to the standard hydrogen electrode, is called the reduction potential. The emf for the Mg-Zn cell described would be: E=Eo(red) (Zn) - Eo(red) (Mg) = -0.76 - (-2.38) = 1.62V if the solutions are 1.0 M.
What are the half-reactions of a galvanic cell?A half-cell reaction is either an oxidation reaction in which electrons are lost or a reduction reaction in which electrons are gained. The reactions occur in an electrochemical cell in which the electrons are lost at the anode through oxidation and consumed at the cathode where the reduction occurs.
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Which two changes of state can occur when a substance gains thermal
energy?
Answers
Answer:
Adding enough thermal energy to a substance can cause a change of state to occur. The change of state from a solid to a liquid is called melting. When energy is added to an ice cube, the ice particles speed up as energy is absorbed. When the particles move fast enough, the solid ice melts and becomes liquid water
Answer:
c and d
Explanation:
Find the number of moles of argon in 534 g
of Argon
Answers
Answer:
13.4 mol Ar
General Formulas and Concepts:
Chemistry - Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:
Step 1: Define
534 g Ar
Step 2: Identify Conversions
Molar Mass of Ar - 39.95 g/mol
Step 3: Convert
[tex]534 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar} )[/tex] = 13.3667 mol Ar
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
13.3667 mol Ar ≈ 13.4 mol Ar
Answer:
The number of moles in 452 grams of Argon is 13.31 moles.
Explanation:
what is the average atomic mass of neon from this data ?
Answers
Answer:
The average atomic mass of neon20.18 amu.
please help meeeee!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
B ) Known as the Age of Mammals
Explanation:
HOPE THIS HELPS
Answer:
B and C
Hope this helps!
Select the correct name for each part of the equation
Answers
A is the reactant, B is the reaction process (or the name of the option that is hidden), C are the products, D is the coefficient, and E is the subscript.
Hope this helps. Please mark brainliest if you can!
Darryl finds a bottle of what looks like clear water, with dirt settled at the bottom. When he shakes the bottle, the water gets dirty. Which term best describes the matter in the bottle?
A.homogeneous mixture
B.heterogeneous mixture
C.element
D.compound
Answers
Answer:
The correct answer is Heterogeneous mixture
Explanation:
Heterogeneous mixture are those mixture in which:
Substance is distributed in non uniform manner.
Two distinct layers are formed
Thus when water and dirt are mixed together it results in the formation of a heterogeneous mixture and after sometimes two different layers will be observed.
Hence, in the bottle there is a heterogeneous mixture of water and dirt.