Answer:
D is the answer
Explanation:
Because thermal is Heat Energy
I hope it's right
Thermal energy is the energy associated with temperature. The correct option is d.
Thermal energy is the energy associated with a substance's or system's temperature. It is a type of kinetic energy that results from the random motion of tiny particles.
The higher the temperature, the larger the average kinetic energy of the particles and the bigger the amount of thermal energy present.
Heat transmission, phase shifts (such as melting or boiling), and the general thermal behaviour of materials all require thermal energy.
It differs from other types of energy including electrical energy (option a), chemical potential energy (option b), and gravitational potential energy (option c).
Thus, the correct option is d.
For more details regarding thermal energy, visit:
https://brainly.com/question/3022807
#SPJ7
What is the volume in liters that is needed to create a 0.5 M solution with 4.9 moles of Fe(OH)2? Round your answer to 1 decimal.
Answer:
[tex]0.5\: moles\: occupies \: 1 \: litre \\ 4.9 \: moles \: will \: occupy \: ( \frac{4.9}{0.5} ) \: moles \\ = 9.8 \: litres[/tex]
You come across two unknown plants and compare their leaves. Plant A has feather like leaves, while Plant B has needles. What type of plant is Plant B? Fern Flowering plant Pine tree Spores
Answer:
The correct answer is - Pine tree.
Explanation:
Coniferous trees or cone-bearing trees normally called conifers adapted their leaves and have needles like leaves that retain more water. Needles do not appear to be leaves but are modified leaves.
Conifer trees adapt this leaf modification to prevent water loss due to transpiration in the case of dry air or atmosphere. Important members of the conifer trees are pine trees, cedars, spruces, and Pines.
Need help on this question asap pleasee
Answer:
9.0 moles of CaO
Explanation:
We have the reaction equation as follows;
Fe2O3 + Ca3(PO4)2 -------> 2FePO4 + 3CaO
Now we know from the equation that;
1 mole of iron III oxide yields 3 moles of CaO
Therefore;
3 moles of iron III oxide yields 3 * 3/1
= 9.0 moles of CaO
URGENT!!!
Which statement explains why an increase in molality increases the boiling point of a solution? The addition of solute decreases the solvent’s vapor pressure. A higher temperature must then be applied to overcome the change. The addition of solute increases the solvent’s vapor pressure. A higher temperature must then be applied to overcome the change. The addition of solute increases the solvent’s ability to boil. The solute’s molecules repel the solvent’s molecules, giving them higher binding energy and hence the need for higher temperature.
Answer:
the addition to solute decreases the solvent's vapor pressure. a temperature must then be applied to overcome the change
Explanation:
Answer:
long story short: A
Explanation:
g EXPERIMENT 1: Calculate the density, record the melting point and the solubility (soluble, partially soluble, and not soluble) in water of the solid substance that you determined in this experiment. Density, melting point and solubility of the solid are intensive properties.
Answer:
If the data is given we can find out the density, melting point and solubility by using the formula given below.
Explanation:
Density is defined as mass of the substance per unit volume of the solution and its formula is p = mass / volume. We can calculate melting point by noting the temperature at which the particular substance starts melting. Solubility refers to the maximum amount of a substance or solute that can be dissolved in a solvent at a given temperature. Divide the mass of the compound by the mass of the solvent and then multiply by 100 g we get solubility in g or in 100g.
Calculate how many grams of sodium chloride we would need to make a solution with the same molarity of seawater, which is about 0.598 M.
Answer:
34.92 grams NaCl (in 1 L of solution)
Explanation:
The chemical formula of sodium chloride is NaCl. From the formula, we can calculate the molar mass of NaCl:
MM(NaCl)= MM(Na) + MM(Cl) = 23 g/mol + 35.4 g/mol = 58.4 g/mol
A solution of NaCl with a molarity of 0.598 M has 0.598 moles of NaCl per liter of solution. So, we multiply the moles by the molar mass of NaCl to calculate the mass we need:
mass of NaCl = 0.598 mol x 58.4 g/mol = 34.92 g NaCl
Therefore, we need 34.92 grams of NaCl to prepare 1 liter of a solution with a molarity of 0.598 M.
What is the radius of this circle if the circumference is 18 pi cm?
Answer: 2.86 inches
Explanation: To find the radius, then, we insert 18 in for the circumference. So 18=2∏r. Solving for r gives 9/∏, or approximately 2.86 inches.
Answer:
2.86 inches
Explanation:
What step in the water treatment process involves the removal of sediment?
A.
aeration
B.
desalination
C.
filtration
What does a strong nuclear force do in an atom?
It repels electrons from other electrons.
It repels protons from other protons.
It attracts protons and neutrons.
It attracts protons and electrons.
Answer:
It Attracts Protons And Neutrons
Explanation:
The strong nuclear force can be regarded as strong interaction. It is force which is strong enough to overcomes repulsive force that exist between two positively charged protons, and this give room for protons and neutrons to stick together in small space.This strong interaction can as well be regarded as attractive force and it binds elementary particles known as quarks together and it forms the "nucleons " which is (protons and neutrons) . It should be noted that strong nuclear force Attracts Protons And Neutrons in an atom
Answer:
c
Explanation:
edge
How are humans activity contributing to climate change?
Answer:
Some human activities that contribute to climate change would be fracking, driving vehicles, deforestation, and developing cities. Fracking releases methane and other greenhouses gases into the atmosphere. Driving vehicles, like cars or trains, also releases carbon dioxide into the atmosphere. Deforestation decreases the amount of oxygen being produced. Developing cities also contributes because it consumes almost 80% of the world's energy, as well as producing 60% of the greenhouse gases.
What percentage of a substance remains after 7 half-lives have passed?
A. 0.39
B. 2.5
C. 1.25
D. 0.78
Answer:
Not really sure, buts its either B or C.
Use the drop-down menus to identify the class of compounds to which each structure belongs.
(use image [brainliest will be given])
Answer:
Use the drop-down menus to identify the class of compounds to which each structure belongs.
✔ carboxylic acid
✔ ether
✔ alkyl halide
✔ amine
The class of compounds of structure given as below:
A. Carboxylic acid
B. Ether
C. Alkyl Halide
D. Amine
What are compounds ?A chemical compound is a material that contains atoms from many chemical elements bonded together by chemical bonds. It is made up of numerous similar molecules. Hence, a molecule made up of only one type of atom is not a compound.
Ionic compounds, covalent compounds, and organic compounds are a few different types of chemical compounds. Ions, which are charged particles, make up ionic compounds.
Atoms that share electrons are the building blocks of covalent molecules. Carbon atoms are covalently bound to hydrogen atoms in organic molecules.
-COOH group represents carboxylic acid, -o- represents ether, -Cl is alkyl halide and NH2R is amine.
Thus, The class of compounds of structure is Carboxylic acid.
To learn more about the compound, follow the link;
https://brainly.com/question/13516179
#SPJ6
Which is the correct chemical formula for Pentacarbon Tetraphosphide
Answer:
C5P4
Explanation:
the answer is C5P4 because penta is 5 and tetra is 4
Make a line graph of the data found above. On the same graph, show the average number of paper clips
each electromagnet picked up for each voltage tested. Plot the voltage on the x-axis and the average
number of paper clips picked up on the y-axis. Scale the x-axis in intervals of 1.5 volts and scale the y-axis in intervals of 5 paper clips.
Answer:
I tried my best lol, but here's what I put. I hope this helped a bit
The graph of the voltage on the x-axis and the average number of paper clips picked up by the electromagnet on the y-axis is shown in the picture attached.
What is an Electromagnet ?An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.
It usually consist of wire wound into a coil. When current is passed through the wire a magnetic field is created which is concentrated in the hole, denoting the center of the coil.
The Battery voltage was plotted on the x axis and the average paper clips picked up by 25 turn electromagnet and 50 turn electromagnet was plotted on y axis and the following graph was obtained.
To know more about Electromagnet
https://brainly.com/question/23727978
#SPJ2
What are the environment impacts of Coal?
Explanation:
The major disadvantage of coal is its negative impact on the environment. Coal-burning energy plants are a major source of air pollution and greenhouse gas emissions. In addition to carbon monoxide and heavy metals like mercury, the use of coal releases sulfur dioxide, a harmful substance linked to acid rain.
Several principal emissions result from coal combustion: sulfur dioxide, which contributes to acid rain and respiratory illness.
how refrigerator magnets work
Answer:
Explanation:
Fridge magnets are made of weakly ferromagnetic ceramics like barium ferrite or strontium ferrite. The magnetic field created by the fridge magnet aligns the spins of unpaired electrons in metal atoms in the fridge in such a way that the magnet and the fridge door are attracted to each other; this force keeps the magnet stuck to the fridge.
Answer:
the fridge is a magnet
Explanation:
magnets connect to fridge
What is the minimum amount of material that must be present in a living organism?
Answer:
Living things can have a minimum of one cell
Explanation:
Living things can have a minimum of one cell; these are called unicellular organisms. Some examples of unicellular organisms: bacteria, algae (plants), some fungi, and protozoa
hope this helps!
In an ecosystem ,cell is the minimum amount of material that must be present in a living organism.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
Learn more about ecosystem,here:
https://brainly.com/question/13979184
#SPJ2
How many molecules are in 450.0 grams of aluminum fluoride (AIF3)?
Answer:
5.3586262014272155
Explanation:
You have to go from grams --> moles --> molecules. You can find the equation online.
First you have to find the molar mass of AlF3 which is 83.98 g/mol.
To convert it to moles you simply
450.0 grams × [tex]\frac{1 mol}{83.98 grams}[/tex] = 5.358 mol
To convert mol to molecules: (multiply by Avogadros # = 6.022*10^23)
5.358 mol × [tex]\frac{6.022*10^2^3}{1mol}[/tex] = [tex]3.23 *10^{24}[/tex]
The concentration of a potassium manganate(VII) solution (KMnO4) is 10 g /l . What is the concentration of this solution in molarity?
Answer:
Have anyone found the answer to this? I’m on this grade result course right now
Explanation:
The concentration of a potassium manganate(VII) solution (KMnO4) is 10 g /L. What is the concentration of this solution in molarity is 0.06 M.
What is the molarity?The ratio of number of moles of solute to the volume of the solution in litre is called molarity. it is denoted by symbol M.
Given concentration (C) of potassium manganate(VII) solution in g/L is 10 g /L
Molarity = C/molar mass of KMnO4 = 10g/L ÷ 158.02g/mol = 0.06 mol/L
To learn more about molarity here.
https://brainly.com/question/2817451
#SPJ3
Mendel crossed tall pea plants with short pea plants. the offspring were all tall plants.
1. Which allele is recessive?
2. Which allele is dominant?

please hurry
Answer:
1. short allele
2.tall allele
write down the important difference between physical change and chemical change
Answer:
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.
Explanation:
if this helped you should mark this the brainliest answer also you should join a meeting if you like it would be fun
Answer:
physical change is reversible but chemical change is irreveesable4
1. You have 19.7 grams of a material and wonder how many moles were formed. Your
friend tells you to multiply the mass by grams/mole. Is your friend correct?
Hint Set in the solution an
Answer:
No. If you were to set up what the friend said it would look like this:
19.7g × [tex]\frac{grams}{moles}[/tex] ==> [tex]\frac{19.7 grams}{1}[/tex] ×
The above does not look right because the grams do not cancel out. If it's not cancelled, it would be included in your final answer, but you're looking for moles not grams.
When setting up a stoichiometry equation, you have to put the same unit of measurement (ex- grams, cm, mm, etc.) on the numerator of one side and the denominator of the other side.
This would cancel out the unit.
For example: If you wanted to find out how much of 320 cm are in a meter.
*there are 100 cm in 1 meter*
(1. always start with the given number!)
(2. set up the next fraction where you can cancel out cm)
[tex]\frac{320cm}{1}[/tex] × [tex]\frac{1 meter}{100 cm}[/tex] = 3.2 m
Going back, your friend would have to switch the units from grams/moles to moles/grams. It would cancel out grams, which would leave moles. Therefore, moles will be included in your final answer.
[tex]\frac{19.7 grams}{1}[/tex] × [tex]\frac{moles}{grams}[/tex] = _?_ moles
You will take the ratio of mass and molar mass. Hence my friend is wrong.
Number of moles and molar massThe formula for calculating the number of moles is expressed as:
[tex]Moles=\frac{mass}{molar mass}[/tex]
Given the following
Mass = 19.7 grams
Since the molar mass is measured in gram per mole, hence to get the number of moles, you will take the ratio of mass and molar mass. Hence my friend is wrong.
Learn more on molar mass here: https://brainly.com/question/15476873
what is the symbiotic relationship of bighorn sheep and worms
Answer:
Lungworms live in the lungs of bighorn sheep causing them to be sick, or even die.
Explanation:
hope this helps
pls mark me brainliest
If 10ml of 1.00M HCI(aq) neutralized 30 ml of an NaOH solution. What was the molarity of the Na OH solution?
Explanation:
plz mark as brainlist///////
Calculate the number of grams in 260 mL ( 1000mL = 1 L) of a 0.55 M solution of NaCl. (1
mol = 58 g)
Answer:
8.29g NaCl are present
Explanation:
To solve this question we must, as first, find the moles of NaCl in 260mL of the solution. These moles can be converted to grams using its molar mass (NaCl = 58g/mol)
Moles NaCl:
260mL * (1L / 1000mL) = 0.260L * (0.55mol / L) = 0.143 moles NaCl
Mass NaCl:
0.143 moles NaCl * (58g / mol) = 8.29g NaCl are present
Convert 22 grams of copper Il chloride (Cucl2) to moles.
with work please
Coca-Cola has 2.2 grams of carbon dioxide gas, CO2 in each 335ml can. What is the molarity of CO2 in Coca-Cola?
a. 0.14 M
b. 0.0066 mol/L
c. 0.028 mol/L
d. 0.41 mol/L
Answer:
a. 0.14 M
Explanation:
Molarity is the molar concentration of a solution and can be calculated using the formula below:
Molarity (mol/L) = number of moles (lol) ÷ volume (L)
To convert the mass of CO2 to moles, we use the formula: mole = mass/molar mass.
Molar mass of CO2 = 12 + 16(2)
= 12 + 32
= 44g/mol
mole = 2.2/44
mole = 0.05mol
Volume of can = 335mL = 335/1000 = 0.335L
Molarity = n/V
Molarity = 0.05/0.335
Molarity = 0.149
Molarity = 0.14 mol/L or M
Which of the following is a property of water? (5 points)
Question 13 options:
1)
It can freeze very fast.
2)
It has low heat capacity.
3)
It exists in all three states on Earth.
4)
It repels other water molecules.
I believe the answer is number 1 but I could be wrong ><
Water is a substance composed of hydrogen and oxygen and exists in solid, liquid and gaseous state in nature.
What is hydrogen?Hydrogen is "a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements".
What is oxygen?Oxygen is "a non-metallic chemical element of Group 16 (VIa) of the periodic table".
What is solid?Solid is a state of matter in which atoms or molecules are tightly packed.
What is liquid?Liquid is a state of matter in which atoms are held loosely and are free to flow.
What is gas?Gas is a state of matter which has no fixed shape and volume.
Hence, water exists in three states of matter.
To learn more about water here
https://brainly.com/question/23725803
#SPJ2
2Al (s) + 3Cl2 (g) --> 2AlCl3 (s) (balanced)
When 52 grams of chlorine gas react, the actual yield is 42.5 grams, what is the
percent yield?
Answer:
Percent yield = 65.2 %
Explanation:
The reaction determines this:
2 moles of Al react to 3 moles of chlorine gas in order to produce 2 mol of aluminum chloride.
We determine the moles of chlorine:
52 g . 1mol /70.9g = 0.733 moles of Cl₂
3 moles of gas can produce 2 moles of salt
Then, our 0.733 moles may produce (0.733 . 2) / 3 = 0.489 moles of AlCl₃
We convert moles to mass to predict the 100 % yield
0.489 mol . 133.3 g /mol = 65.19 g
Percent yield = (Yield produced / 100 % yield) . 100
Percent yield = (42.5 g / 65.19g) . 100 = 65.2 %
How many degrees would the temperature of a 45.0 g piece of iron increase if 7,680 J of energy are applied to it? (The specific heat of iron is 0.449 J/g°C)
Question 10 options:
76.6°C
155,000°C
380°C
0.0130°C
Answer:
380
Explanation:
Q=mco
Q is the energy
M is mass
C is specific heat
O is increased in temperature