Answer:
Burning paper
Explanation:
I got it right on the test.
What is the formula for the compound that contains Na+ and No3
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
what volume of water has a mass of 1 kg
Answer:
[tex]V=0.001\ m^3[/tex]
Explanation:
Mass, m = 1 kg
The density of water, d = 1000 kg/m³
We need to find the volume of water. The formula for the density of an object is equal to mass divided by volume. Its formula is :
d = m/V
V is the volume of water
[tex]V=\dfrac{m}{d}\\\\V=\dfrac{1\ kg}{1000\ kg/m^3}\\\\=0.001\ m^3[/tex]
So, the volume of water is [tex]0.001\ m^3[/tex].
Answer:
Volume of water has a mass of 1 kg is explained below in details.
Explanation:
One liter of h2O has a volume of approximately specifically one kilogram when estimated at its maximum frequency, which happens at about 4 °C. It observes, therefore, that thousand of a liter, recognized as one milliliter (1 mL), of h2O has a volume of about 1 g; 1000 liters of h2O has a volume of about 1000 kg (1 tonne).
What are the circles around the nucleus called
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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what is the average atomic mass of neon from this data ?
Answer:
The average atomic mass of neon20.18 amu.
The terms concentrated and dilute are quantitative.
True
False
Answer:
true
Explanation:
cause thereare both in liquid form
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
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.
please help meeeee!!!!!!!!!!!!!!!!!!!!
Answer:
B ) Known as the Age of Mammals
Explanation:
HOPE THIS HELPS
Answer:
B and C
Hope this helps!
Which two changes of state can occur when a substance gains thermal
energy?
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:
Which of the following is an ion?
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
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.
which best describes the relationship of substance particles in my neutral atom
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
Which substance is not produced during the electrolysis of concentrated aqueous sodium chloride?
A) Chlorine
B) Hydrogen
C) Sodium hydroxide
D) Sodium chloride
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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What is the number of valance electrons for oxygen
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.
Which of the following is necessary for photosynthesis?
OA.
OB.
OC.
OD.
calcium
water
glucose
Oxygen
Answer:
OB
Explanation:
Water is necessary. Since during photosynthesis water reacts with carbon dioxide to form glucose and oxygen.
Calcium is a big NO!!.
formula for Tricarbon heptabromide.
Find the number of moles of argon in 534 g
of Argon
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:
The formula of the following equation is for what type of chemical reaction? *
CxHy+O2--> CO2 +H2O+ energy
Answer:
flifeee
Explanation:qaSZDFVCVB CDSEW34EDGFBFF
When roasting marshmallows, is the marshmallow the system or the surrounding
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.
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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2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)
how many atoms are in 3.2 moles of KCl?
Answer:
If u use math why It will give u the answer like 3x3=9
Explanation:
HELLLLLLP PLZ PLZ PLZ PLZ ASAP
Answer:
H
Explanation:
Answer:
H
Explanation:
Because an object in motion will stay in motion, unless acted upon by another object
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Which of the following is a pH for a base?
Question 4 options:
1
13
7
5
Answer:
is 7.................
Select the correct name for each part of the equation
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!
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
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.
Answer:
physical
Explanation: water can change from solid to liquid to a gas
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
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
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:
What is the density of a substance that has a volume of 14 millimeters and a mass of 13.2 grams.
Answer:
0.94 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question we have
[tex]density = \frac{13.2}{14} \\ = 0.94285...[/tex]
We have the final answer as
0.94 g/mLHope this helps you
How many grams of carbon are in 300 g of glucose
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? ___
Answer:
Independent is x, which is the time.
Dependent is y, which is the distance.