Answer:
There are two major categories of energy: renewable and non-renewable.
Non-renewable energy resources are available in limited supplies, usually because they take a long time to replenish. The advantage of these non-renewable resources is that power plants that use them are able to produce more power on demand. The non-renewable energy resources are:
CoalNuclearOilNatural gasRenewable resources, on the other hand, replenish themselves. The five major renewable energy resources are:
SolarWindWater, also called hydroBiomass, or organic material from plants and animalsGeothermal, which is naturally occurring heat from the earthWhile renewable energy resources have the advantage of unlimited supply over the long haul, they are limited in their availability at any given moment.
For example, the sun rises each day, but its ability to generate power is limited when its cloudy. Another disadvantage is that power plant operators can’t crank up renewable energy production when people are consuming more power, such as on a hot day when many people are running air conditioners at the same time.
True or False:
Houston, Texas received approximately 2 inches of snow on February 15, 2021. Based on this, we can now say Houston's climate consists of long, freezing winters and yearly snowfall. Please answer ASAP. Thanks
Answer:
False.
Explanation:
I majored in Chemistry
What is the theoretical yield of SO3 produced by 4.91 g of S?
Answer:
12.2 g
Explanation:
Step 1: Write the balanced equation for the synthesis of SO₃ from S
S + 1.5 O₂ ⇒ SO₃
Step 2: Calculate the moles corresponding to 4.91 g of S
The molar mass of S is 32.07 g/mol.
4.91 g × 1 mol/32.07 g = 0.153 mol
Step 3: Calculate the theoretical yield, in moles, of SO₃ from 0.153 moles of S
The molar ratio of S to SO₃ is 1:1. The moles of SO₃ produced are 1/1 × 0.153 mol = 0.153 mol.
Step 4: Calculate the mass corresponding to 0.153 moles of SO₃
The molar mass of SO₃ is 80.06 g/mol.
0.153 mol × 80.06 g/mol = 12.2 g
Write the chemical formula of the ionic compound that is formed with Na+ combines with S2-
Answer:
Compounds are formed by the combination of cation and anion.
On combining all the possible positive ions with negative ions, we get
CuCl
2
,CuSO
4
,NaCl,Na
2
SO
4
,FeCl
3
,Fe
2
(SO
4
)
3
Explanation:
ur ans
Which would occur if a ball x were rolled across a smooth floor to collide with a similar ball y that was stationary
Answer:
For a collision where objects will be moving in 2 dimensions (e.g. x and y), the momentum will be conserved in each direction independently (as long as there's no external impulse in that direction). In other words, the total momentum in the x direction will be the same before and after the collision.
Explanation:
Jewelry and tableware are sometimes made of sterling silver. Sterling silver is 92.5% silver (Ag) and 7.5% copper (Cu). If you wanted to make 30 grams of sterling silver for a ring, how many grams of silver and copper would you need to start with?
Amount of sterling silver?
Amount of copper?
total grams of alloys needed?
Answer:
12.33
Explanation:
92.5/7.5= 12.33
30g of the sterling silver ring contains, 27.75 g of silver and 2.25 g of copper.
What is cross multiplication?Cross multiply fractions by multiplying one fraction's denominator by the other fraction's numerator and then comparing the two values. The larger fraction is the one with the higher value.
100g of sterling silver contains 92.5g of silver and 7.5g of copper.percentage of element = amount of the element present in 100 g of materialTherefore,
100g sterling silver = 92.5g silver30g sterling silver = X g silver( cross multiplication),
100 × X = 92.5 × 30
X = 92.5 × 30/ 100
X= 27.75g silver100g sterling silver = 7.5g copper
30g sterling silver= Y g copper
(cross multiply)
100 × Y = 7.5 × 30
Y= 7.5 × 30 / 100
Y= 2.25g copperX (silver)= 27.75 g in 30 g of sterling silverY (copper)= 2.25 g in 30 g of sterling silvertherefore, 30g of sterling silver ring contains, 27.75 g of silver and 2.25 g of copper.
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The carbon cycle is the exchange of carbon between the lands, the oceans the atmosphere and the earth's interior
O True
O False
Answer:
True
Explanation:
Carbon is the backbone of life on Earth. Most of Earth's carbon, about 65,500 billion metric tons is stored in rocks. The rest is in the ocean, atmosphere, plants, soil, and fossil fuels. Carbon flows between each reservoir in an exchange called the carbon cycle, which has slow and fast components.
Rings are a characteristic of
Answer:
physical
Explanation:
if it is asking to determine what it is a sign of or how to identify that characteristic it would be a physical.
What causes the convection cell to turn left at point B?
P.S: This is for my science notes so try and make it a little simple thx
Answer:
Point B is in Between two convection, and is just below a ridge . This cause the cell to turn left because the flow of fluid hits the bottom of the crust this is the best I can do to Help you understand.
Day 1 code word for science?
Answer:
hail Hydra kandksmak Yes
Choose the correct statement.
A) Anions gain electrons having a charge of positive.
B) Cations lose electrons having a charge of positive
C)Cations lose electrons having a charge of negative.
D)Anions gain electrons having a charge of neutral.
Answer:
B) Cations lose electrons having a charge of positive.
Explanation:
Hello there!
In this case, it is widely known that ions are classified as positive cations and negative anions, since the former is produced when a metal loses electrons and the latter when a nonmetal gains electrons; in such a way, the correct choice is:
B) Cations lose electrons having a charge of positive.
Best regards!
Answer:
Either B or A
Explanation:
The other answer said B, and I said either B or A, so anyone who is currently cheating on a chemistry test, try B
What mass will 7.29 moles of CO2 gas contain?
Answer:
[tex]320.8329\ \text{g}[/tex]
Explanation:
[tex]n[/tex] = Moles of [tex]CO_2[/tex] = [tex]7.29\ \text{moles}[/tex]
[tex]M[/tex] = Molar mass of [tex]CO_2[/tex] = [tex]44.01\ \text{g/mol}[/tex]
Mass is given by
[tex]m=nM[/tex]
[tex]\Rightarrow m=7.29\times 44.01[/tex]
[tex]\Rightarrow m=320.8329\ \text{g}[/tex]
The mass of the [tex]CO_2[/tex] gas will be [tex]320.8329\ \text{g}[/tex].
Explain the concept of law of multiple proportions
i don’t get this- it’s due tmrw
Carbon dioxide is produced by the human body through
O combustion
O respiration
O photosynthesis
O decomposition
Answer:
Respiration
I hope this helps!
Write the formula of the conjugate base of the Brønsted-Lowry acid, HIO3
Answer:
Explanation:
A conjugate base of HIO3 is IO3– ion
The chemical formula of the conjugate base of the Bronsted Lowry acid HIO₃ can be represented as IO₃⁻.
What is Bronsted - Lowry acid and bases?According to Bronsted - Lowry theory, acid is a substance that donates a proton or H⁺ ion and forms its conjugate base while the base is a substance that accepts a proton or H⁺ ion and forms its conjugate acid.
Bronsted-Lowry acid donates a proton to the other compound and forms a conjugate base.
Acid ⇄ Conjugate base + Proton
If a conjugate base accepts a proton back then acid reforms.
The Bronsted-Lowry base is a substance that accepts a proton from other compounds.
Base + Proton ⇄ Conjugate acid
If a conjugated acid donates its proton then the base reforms.
The conjugate base of the Bronsted-Lowry acid HIO₃ is:
HIO₃ ⇄ H⁺ + IO₃⁻
Therefore, the conjugate base of the Bronsted-Lowry acid HIO₃ is IO₃⁻.
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What is the mass of 48 ml of a liquid if its density is 1.25 g/ml?
Answer:
60 g
Explanation:
Mass = Density × Volume
Mass = 1.25 × 48
Mass = 60 g
I hope this helps!
A compound decomposes by a first-order process. If 36 %% of the compound decomposes in 60 minutes, the half-life of the compound is ________minutes. A compound decomposes by a first-order process. If 36 of the compound decomposes in 60 minutes, the half-life of the compound is ________minutes. -5 93 41 -18 39
Answer: The half-life of the compound is 93 minutes
Explanation:
Expression for rate law for first order kinetics is given by:
[tex]t=\frac{2.303}{k}\log\frac{a}{a-x}[/tex]
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant =100
a - x = amount left after decay process = (100-36) = 64
a) for completion of 36 % of reaction
[tex]60=\frac{2.303}{k}\log\frac{100}{100-36}[/tex]
[tex]k=\frac{2.303}{60}\log\frac{100}{64}[/tex]
[tex]k=0.0074min^{-1}[/tex]
b) for completion of half life:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
[tex]t_{\frac{1}{2}}=\frac{0.693}{k}[/tex]
[tex]t_{\frac{1}{2}}=\frac{0.693}{0.0074min^{-1}}=93min[/tex]
The half-life of the compound is 93 minutes
How many atoms are in 6.30 moles of sulfur (S)?
Answer: 3.79*10^24 atoms
Explanation:
1 mole = 6.02214076*10^23 atoms
40 points for this question PLEASE HELP SOMEONE ILL GIVE BRAINLIEST
Answer:
whats the question?
Explanation:
If I bought a pen, would this be an irreversible change? Explain why
Answer:
No
Explanation:
it will not be a irreversible change because u can give back the pen if it is in its original state and the shop keeper might accept it back that is what mostly happens. if the pen breaks or is used then it might me called a irreversible change until then it is reversible if not used yet.
thank u
Answer:
No
this is reversible because you can return the pen.
which statement describes the energy and bonding changes as two atoms of fluorine become a molecule of fluorine?
Statement that gives description as regards energy and bonding changes between atoms such as fluorine become a molecule of fluorine, bond Energy is released as a bond is formed. Thus option 4 is correct.
What is bond energy ?The Bond Energy otherwise called as bond enthalpy is a quantity that offers insight into the strength of a chemical bond.
The ‘bond energy’ can also be represented as “the average value obtained from the bond dissociation enthalpies of all the chemical bonds in a given chemical compound.
The bond energy of a chemical bond is directly proportional to the stability of that bond which implies that the greater the bond energy o between two atoms, the greater the stability of that chemical bond.
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Your question was incomplete. The probable question.
Which statement describes the energy and bonding changes as two atoms of fluorine become a molecule of fluorine?
1.Energy is absorbed as a bond is broken.
2.Energy is absorbed as a bond is formed.
3.Energy is released as a bond is broken.
4.Energy is released as a bond is formed.
Can anyone help out??
não se esqueça de mim não sei
3
2
1
4
6
5
not a 100% sure but i think this is it.
Kinetic energy is energy stored in an object due to its position.
True
Or
False
Answer:
[tex]\boxed {\boxed {\sf False}}[/tex]
Explanation:
Kinetic energy is the energy of movement or energy at work. An example is a ball rolling down a hill.
Potential energy is stored energy due to the position of an object. For example, a ball resting at the top of a hill.
The question incorrectly described potential energy as kinetic energy. Therefore, the answer is false.
6.25 x 10^22 Molecules of BR2 = ?moles
0.104 mol Br₂
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
6.25 × 10²² molecules Br₂
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: [tex]\displaystyle 6.25 \cdot 10^{22} \ molecules \ Br_2(\frac{1 \ mol \ Br_2}{6.022 \cdot 10^{23} \ molecules \ Br_2})[/tex]Multiply/Divide: [tex]\displaystyle 0.103786 \ mol \ Br_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
0.103786 mol Br₂ ≈ 0.104 mol Br₂
What would be an inference you could make about this cat?
Answer:
pickles are ligit good
Explanation:
i like pickles but not his
Which statement describes steps involved in the production of hydroelectric power?
A. Falling water turns a turbine that helps generate electricity.
B. Moving water turns a paddle wheel that helps generate electricity.
C. Water falls down a pipe to generate electricity.
D. Potential energy of water is directly transformed into electrical energy.
5.478 grams of potassium acetate and 2.143 grams of iron(III) hydroxide are added to a beaker containing 100.0 mL of water and stirred vigorously. A solid settles to the bottom of the beaker. If the water is decanted and the solid is dried, what is the maximum mass of solid that should be recovered
Solution :
[tex]$Fe(OH)_3+3CH_3COOK \rightarrow Fe(CH_3COO)_3 + 3KOH$[/tex]
(iron (potassium
hydroxide) acetate)
Number of moles of [tex]$Fe(OH)_3 = \frac{\text{mass of }Fe(OH)_3}{\text{molar mass of }Fe(OH)_3}$[/tex]
[tex]$=\frac{2.143 \ g}{106.867 \ g/mol}$[/tex]
= 0.02005 mol
Number of moles of [tex]$CH_3COOK = \frac{\text{mass of }CH_3COOK}{\text{molar mass of }CH_3COOK}$[/tex]
[tex]$=\frac{5.478 \ g}{98.15 \ g/mol}$[/tex]
= 0.0585 mol
Since 1 mol of [tex]$Fe(OH)_3$[/tex] reacts with 3 mols of [tex]$CH_3COOK$[/tex]
Therefore, number of moles of [tex]$CH_3COOK$[/tex] reacted [tex]$=\frac{0.0585}{3 }$[/tex] mol
= 0.0195 mol
Therefore the limiting reagent is [tex]$CH_3COOK$[/tex] and hence the number of moles of [tex]$Fe(CH_3COO)_3$[/tex] produced is 0.0195 mol
Amount of [tex]$Fe(CH_3COO)_3$[/tex] produced = moles x molar mass
= 0.0195 moles x 232.98 g/mol
= 4.5431 g
How many atoms is 45 moles of silicon (Si)?
Which example is NOT a physical change? *
A. Green bananas turning yellow as they ripen.
B. Mixing ingredients to make a cookie.
C. Using dye to change the color of shirt
D. Getting your hairs cut.
Answer:
A
Explanation:
it is no longer going to unripen/ went through a chemical reaction
please help asappp♀️!