Answer:
Below! ;)
Explanation:
The formula for finding density is:
Mass/Volume
So for example I have a cube, it has a mass of about 20 grams (not weight) and it's dimensions are about an inchxinchxinch. So basically it is a 20 gram cubic inch cube.
So to find it's density I have to divide mass(=20)/Volume(=1 inch^3). or simplified, 20 ÷ 1 = 20
So the density of my cube is 20..
Hope this helps!
Have a nice day!
If you find my answer helpful
Pls consider marking my answer as Brainliest! It would mean a lot!
For the following reaction, calculate how many moles of each product are formed when 4.05 g of water is used.
2 H2O → 2 H2 +02
Answer:
A. 0.225 mole of H₂
B. 0.113 mole of O₂.
Explanation:
We'll begin by calculating the number of mole in 4.05 g of water (H₂O). This can be obtained as follow:
Mass of H₂O = 4.05 g
Molar mass of H₂O = (2×1) + 16 = 2 + 16 = 18 g/mol
Mole of H₂O =?
Mole = mass /Molar mass
Mole of H₂O = 4.05 / 18
Mole of H₂O = 0.225 mole
Next, the balanced equation.
2H₂O —> 2H₂ + O₂
From the balanced equation above,
2 moles of H₂O produced 2 moles of H₂ and 1 mole of O₂.
A. Determination of the number of mole hydrogen produced.
From the balanced equation above,
2 moles of H₂O produced 2 moles of H₂.
Therefore, 0.225 mole of H₂O will also produce 0.225 mole of H₂.
B. Determination of the number of mole oxygen produced.
From the balanced equation above,
2 moles of H₂O produced 1 mole of O₂.
Therefore, 0.225 mole of H₂O will produce = (0.225 × 1)/2 = 0.113 mole of O₂.
Thus, 0.113 mole of O₂ is produced.
e
eat...
A Mrs. Hicks' Resourc...
E Drawing I START HE...
E Photography START...
E Wildlife Biology an...
U MyChart - Login Pa...
Пште
Attem
5 Mi
Question 1
1 pts
Where did most of the heat of the Earth come from at its formation?
O Seismic waves
O Radioactive decay
O Planetesimals crashing into each other
Peridotite xenoliths
Question 2
1 pts
Answer:
radioactive decay
Explanation:
a study reveals that only about half of our planets internal heat stems from natural radioactivity the rest is primordial heat left over from when earth first coalesced from a hot ball of gas dust and other material
A football player kicks a 0.94 kg football with a force of 2.4 N.
Calculate the acceleration of the football as the player kicks the ball. Round your answer to the nearest tenth of a m/s2.
The acceleration of the football is
Explanation:
Fnet = ma
Therefore a = Fnet/m = 2.4N/0.94kg = 2.45m/s².
Answer:
2.6 m/s2
Explanation:
what is the molecular formula of methanoic acid
Answer:
CH₂O₂
Mark me as brainliest plz.
Explanation:
CH2o2.is right ans hi I'm anmol kulkar from India
Look at the following chemical equation.
10Ag + S = 8Ag S
What is true about this chemical equation? (Hint: The reactant is the substance at the start of a chemical reaction.
The product is the substance at the end of the chemical reaction.
A.It is unbalanced because the number of reactants is less than the number of products.
IB.t is balanced because the products contain the same number of sulfur (S) atoms as the reactants.
C.It is balanced because the mass of the reactants is equal to the mass of the products.
D.It is unbalanced because the products contain fewer silver (Ag) atoms than the reactants.
Answer: I think it is D
Explanation:
what is stastical thermodaynamics deal?
Explanation:
Statistical thermodynamics is a theory that uses molecular properties to predict the behavior of macroscopic quantities of compounds. ... From these energy-level data, a temperature-dependent quantity called the partition function can be calculated.
Answer:
the stastical thermodaynamics deal is essentially a theory that you can use the molecules and their properties in order to predict how the molecule will behave in a macroscopic quantities of compounds. Using this, you can also tell a temperature-dependent quantity called the partition function.
(I also didn't copy and paste this, so it's safe for you to use)
May I have brainliest please? :)
In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. How many lone pairs of electrons are present in the Lewis structure of calcium sulfide?
A. one
B. two
C. three
D. four
E. none
Answer:
E.none
Explanation:
because the bonds join with each other and no lone pair is left
how dose dissolving sugar in water show that matter is made up of particles
Answer:
When sugar dissolves, the sugar particles separate from each other and mix with the water particles. When the sugar particles separate, the smaller water particles fit into the spaces between the larger sugar particles. The water and sugar particles are attracted to each other, so they move closer together when they mix.
Explanation:
: )
A radical is a reactive intermediate with a single ____________ electron, formed by ____________ of a covalent bond. Allylic radicals are stabilized by ____________ , making them ____________ stable than tertiary radicals. A compound that contains an especially weak bond that serves as a source of radicals is called a radical ____________ . Treatment of cyclohexene with N-bromosuccinimide in the presence of light leads to ____________ by ____________ intermediates.
1. A radical is a reactive intermediate with a single ____________ electron, formed by ____________ of a covalent bond.
1. A: Unpaired, and homolysis
2. Allylic radicals are stabilized by ____________ , making them ____________ stable than tertiary radicals.
2. A: Resonance, and more
3. A compound that contains an especially weak bond that serves as a source of radicals is called a radical ____________ .
3. A: Initiator
4. Treatment of cyclohexene with N-bromosuccinimide in the presence of light leads to ____________ by ____________ intermediates.
4. A: Allylic substitution by radical
Scientists use _____ as chemical symbols.
dots
letters
shapes
lines
Answer:
Letters
Explanation:
Answer:
Letters
Explanation:
Chemical symbols are used to standardize the 'language of chemistry' and to identify elements and atoms in a chemical formula easily. Chemical symbols consist of one or two letters, most often derived from the name of the element.
magnesium sulfide + nitric acid net ionic
Answer:
MgSO_3(s) + 2 HNO_3(aq) rightarrow Mg^2+(aq) + 2 NO_3^-(aq) + SO_2(g) + H_2O(l) b.
Explanation:
The balanced net ionic equation for the reaction of magnesium sulfite with nitric acid is a. MgSO_3(s) + 2 HNO_3(aq) rightarrow Mg^2+(aq) + 2 NO_3^-(aq) + SO_2(g) + H_2O(l) b.
What is 797 mm hg to atm?
Answer:
797 mm hg = 1.04868 atm
Explanation:
1 atm = 760 mm hg
797 mm hg to atm is 1.0468 atm
Pressure is defined as the physical force exerted on an object. The force applied is perpendicular to the surface of objects per unit area.
There are many different types of units and prefixes that may be used in general practice to reflect pressure. Thus, it is ensured that all the measurements and their respective units are in the same framework when conducting pressure calculations.
Pascal is the SI unit of pressure, and is the basic pressure unit in the SI (the International System of Units) system.
Given,
Pressure = 797 atm
1 mm Hg = 0.00131579 atm
797 mm Hg = 0.00131579 × 797
= 1.04868 atm
Learn more about Pressure, here:
https://brainly.com/question/30673967
#SPJ1
Please help, it’s much appreciated
If the hydrogen ion concentration,
[H+], in a solution is 2.65 x 10-2 M,
what is [OH-]?
Answer: acidic
Explanation:
Answer:
3.77 x 10^-13 M
Explanation:
A nuclear power plant produces huge amount of electricity. However, it dumps radioactive wastes into the sea. This has led to an increase in illness among people living along the coast. Which of these is the best method to solve this problem?
Question 1 options:
Convert the nuclear power plant into a hydroelectric power plant which does not produce wastes.
Shift the nuclear power plant to locations far away from the sea.
Increase public awareness to close the nuclear power plant.
Provide the nuclear power plant with a plan to properly dispose of and recycle the wastes.
Answer: Provide the nuclear power plant with a plan to properly dispose of and recycle the wastes.
Explanation:
The nuclear power plant is producing huge amounts of electricity which is beneficial to the economy as it pushes growth. Shutting it down or relocating it is therefore not the right solution.
The problem is the radioactive waste being produced so a solution that is specific to this problem should suffice. That solution would be the provision of the nuclear plant with plans to properly dispose of the waste.
Should this happen, the nuclear plant can still stay in the same area and keep contributing to economic growth without adversely affecting people's heath.
Answer: yup the correct answer is c
Explanation:
How many
electrons does Oravetium contain
it was believed that earth was a stationary object at the center of the universe all other objects in space without to go around earth which of these is a criticism of this idea
Answer: is that a question or
Explanation:
Answer:
its c
Explanation:
What are the rules for writing
names/formulas for covalent
compounds? Give examples
where you need to produce
the formula from the name
AND the name from the
formula
Answer:
When naming molecular compounds prefixes are used to dictate the number of a given element present in the compound. ” Mono-” indicates one, “Di-” indicates two, “Tri-” is three, “Tetra-” is four, “Penta-” is five, and “Hexa-” is six, “Hepta-” is seven, “Octo-” is eight, “Nona-” is nine, and “Deca-” is ten.
PLEASE HELP ME!!!!!!!!
Answer:
I think the answer is false
A 700 mL sample of gas at STP is compressed to 300 mL, and the
temperature is raised to 100.C. What is the new pressure of the gas in atm?
Answer:
P₂ = 3.19 atm
Explanation:
Given data:
Initial volume = 700 mL
Initial pressure = 1 atm
Initial temperature = 273K
Final temperature =100°C (100+273= 373 K)
Final volume = 300 mL
Final pressure = ?
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
P₂ = P₁V₁ T₂/ T₁ V₂
P₂ = 1 atm × 700 mL × 373K / 273 K ×300 mL
P₂ = 261100 atm .mL. K /81900 K .mL
P₂ = 3.19 atm
What will happen to the following equilibrium if Cl2
was removed ?
4HCI(9) + O2(9) = 2012(9) + 2H20(9)
The following equilibrium will shift in the direction of the product:
Further explanationGiven
Reaction
4HCl + O₂ → 2H₂O + 2Cl₂
Cl₂ was removed
Required
Equilibrium changes
Solution
Reaction = - action
adding the products ⇒ Shifts in the direction of the reactants
reducing the products ⇒Shifts in the direction of the products
Cl₂ as a product, so if Cl₂ is taken or reduced, the reaction will try to maintain system equilibrium by moving to the right (product formation) ⇒ Shift in the direction of the product:
A mixture is prepared using 27.00 mL of a 0.0758 M weak base (pKa=4.594) , 27.00 mL of a 0.0553 M weak acid (pKa=3.235) and 1.00 mL of 1.25×10−4 M HIn and then diluting to 100.0 mL, where HIn is the protonated indicator. The absorbance measured at 550 nm in a 5.000 cm cell was 0.1102 . The molar absorptivity (????) values for HIn and its deprotonated form In− at 550 nm are 2.26×104 M−1cm−1 and 1.53×104 M−1cm−1 , respectively. What is the pH of the solution?
Answer:
pH = 4.164
Explanation:
The first process is to find the initial moles for the base (B) & the acid (HA)
i.e.
[tex]= \dfrac{27 mL \times 0.0758 \ moles \ \ of \ B}{1000 \ mL}[/tex]
[tex]=0.0020466[/tex]
[tex]\simeq 2.047\times 10^{-3} \ moles \ of \ B[/tex]
[tex]= \dfrac{27 mL \times 0.0553 \ moles \ \ of \ HA}{1000 \ mL}[/tex]
[tex]=0.0014931[/tex]
[tex]\simeq 1.493\times 10^{-3} \ moles \ of \ HA[/tex]
The acid with base reaction is expressed as;
HA + B → A⁻ + HB⁺
to 1.493 × 10⁻³ 2.047 × 10⁻³ - -
- 1.493 × 10⁻³ 1.493 × 10⁻³ 1.493 × 10⁻³ 1.493 × 10⁻³
0 5.54 × 10⁻⁴ 1.493 × 10⁻³ 1.493 × 10⁻³
From observation; both the acid & base weak
Given that:
The pKa for base = 4.594
The pKa for acid = 3.235
Recall that;
pKa = -log Ka
So; Ka = [tex]\mathbf{10^{-Ka}}[/tex]
By applying this:
For Base; Ka = [tex]10^{-4.594}[/tex] = 2.5468 × 10⁻⁵
For Acid: Ka = [tex]10^{ -3.235}[/tex] = 5.821 × 10⁻⁴
After the reaction; we have the base with its conjugate acid & conjugate base of acid; Thus, since the conjugate acid of the base possesses a higher value of K, it is likely it would be the one to define the pH of the solution.
By analyzing the system, we have:
HB⁺ + H₂O ↔ B + H₃O⁺
[tex]\dfrac{1.493\times 10^{-3}}{0.1 \ L}[/tex] [tex]\dfrac{5.54\times 10^{-4}}{0.1 \ L}[/tex]
to 0.01493 M 0.00554 M
- x x x
0.01493 - x 0.00554 - x x
Thus;
[tex]2.5468 \times 10^{-5} = \dfrac{(0.00554 -x)\times x}{(0.01493-x)}[/tex]
Using the common ion effect;
0.00554 - x [tex]\simeq[/tex] 0.00554 &
0.01493 - x [tex]\simeq[/tex] 0.01493
∴
[tex]x = \dfrac{2.5468 \times 10^{-5} \times 0.01493}{0.00554}[/tex]
x = [H₃O⁺] = 6.8635 × 10⁻⁵
∴
pH = -log(6.8635 × 10⁻⁵)
pH = 4.164
What is GRAVITY and WHO discovered it? *
Answer:
Newton discovered it.
Explanation:
Gravity is the attraction between the earth and any object. and gravitational force is the attraction between any two objects.
Answer:
gravity is a force that pulls things towards each other
Explanation:
issac newton is the one who discovered it
What is a "mole" in chemistry?
Answer:
Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other
Answer:
Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.
Explanation:
dipole dipole bonds are covalent bond?
Answer:
The polar covalent bond is much stronger in strength than the dipole-dipole interaction. The former is termed an intramolecular attraction while the latter is termed an intermolecular attraction. So now we can define the two forces: Intramolecular forces are the forces that hold atoms together within a molecule.
Explanation:
I have some things to point out:
#1: There is no such thing as "Dipole-dipole bonds", only Dipole-dipole interactions between molecules that share an unequal balance of electrons between their atoms.
#2: Intermolecular forces of attraction such as Dipole-dipole interactions are not considered as covalent bonds. Covalent bonds are rigid and are considered intramolecular forces of attraction (found within the molecule instead of between)
Hope I have helped you! Many thanks.
Name the following hydrocarbon:
CH3CH2CH2CH2F
A. 4-fluorobutane
B. 2-fluorobutane
C. 1-fluorobutane
D. 1-fluoropentane
Answer:
The correct answer is (C)
Which is "1-fluorobutane"
Explanation:
Hope this helped if so please leave a "Rating" and "Like" and MARK me Brainliest if it was the BEST answer! THANKS! :)
The name of the hydrocarbon CH3CH2CH2CH2F is 1-fluorobutane.
In naming organic hydrocarbons, we count the number of the parent chain family. Here, we have an alkane with 4 carbons, which means that the parent chain is a family of alkane. The fourth compound in the family of an alkane is butane.
Afterwards, we will determine if there is any substituent attached to any of the carbon atoms in the chain and rank them in a way such that we have the lowest possible number.
Here, the fluorine is attached to the first carbon atom. So, it becomes 1-fluorobutane.
Learn more about the naming of hydrocarbons here:
https://brainly.com/question/16043495?referrer=searchResults
which event would most likely lead to a thunderstorm HELP GIVING BRAINLIEST
Answer:
A
Explanation:
i got right
Please help will give brainliest
Answer:
the answer id D
Explanation:
i dont know im just living here 5
Will give brainliest
what does the phrase sea of electrons describe?? please help
Answer: Metallic Bonding.In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions.
Explanation:
How many grams of NaCl are needed to make 300ml of a 2% solution
Answer:
2grams as per the question