Answer:
there is 60.7625 grams of magnesium
Answer:
Explanation:
1 mol of magnesium = 25 grams (correct this with the periodic table you were given.
2.5 mols = x grams
1/2.5 = 24/x Cross Multiply.
x = 2.5 * 24
x = 60 grams Remember to correct the 24 with the mass given with your periodic table.
What do you think would happen if you threw a block of polystyrene (styrofoam™) into the water?.
Answer:
It will float
Explanation:
Polystyrene is not dense and its light and full of air. It will float.
A higher-frequency wave has more energy than a lower-
frequency wave with the same amplitude.
A compound is composed of 62.1% carbon, 24.1% nitrogen, and 13.8 % hydrogen and has a molar mass of 116.0 g/mol. Determine the Empirical and Molecular formulas of the compound.
would marbles be considered an insulator or conductor
what substance melts ice the fastest science project
Answer:
Salt
Explanation:
salt particles make it harder for water particles to freeze back onto the ice
ice that is in contact with dissolved salt melts faster
If u answer will answer the brainlest
Answer:
the electricity dissipated, because of the time.
Explanation:
electricity dissipates.
4) How many grams are in 4.63 x 102 moles of CC14?
Answer:
n=mass/molar mass
mass=?,molar mass=12+(35.5)4=154g/mol.n=4.63x10²
mass=4.63x10²x154=7128g
_____ forces can cause an object to accelarate
Answer: Unbalanced Forces
Explanation: The bigger the unbalanced force acting on the object the bigger the acceleration of the object. The more mass the object has, the more inclined it is to resist any change to its motion.
How many moles of oxygen (O2) are present in 33. 6 L of the gas at 1 atm and 0°C? 1. 5 2 22. 4 32.
The number of moles of oxygen in the gas is 1.5 L.
The correct option is (A).
What are moles?The mole is the International System of Units' foundation unit of material quantity.
Given,
The volume of gas is 33.6 L
Pressure is 1 atm.
Temperature is 0°C
Molar gas volume is 22.4 L
There is no temperature and pressure is 1 atm.
By formula of moles, volume is divided by molar mass
[tex]\bold{\dfrac{33.6}{22.4 } =1.5\; mole}[/tex]
Thus, option A is correct. 1.5 L.
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In chloroplasts,( ) ( )
from the air is converted into ( )
Fill in the blanks please it’s urgent
Answer:
Photosynthetic cells contain chlorophyll and other light-sensitive pigments that capture solar energy. In the presence of carbon dioxide, such cells are able to convert this solar energy into energy-rich organic molecules, such as glucose.
In chloroplasts, carbon dioxide (CO₂) from the air is converted into glucose (C₆H₁₂O₆).
Chloroplasts, the organelles in plant cells responsible for photosynthesis, play a crucial role in converting carbon dioxide (CO₂) from the air into glucose (C₆H₁₂O₆). This conversion occurs through a complex biochemical process known as photosynthesis.
Photosynthesis involves several steps. In the light-dependent reactions, light energy is absorbed by chlorophyll molecules, which energizes electrons. These electrons are then passed through a series of proteins in the thylakoid membrane, generating energy-rich molecules like ATP.
In the light-independent reactions (Calvin cycle), carbon dioxide from the air is captured and combined with ribulose-1,5-bisphosphate (RuBP) using an enzyme called ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO). This leads to the formation of a compound that is eventually converted into glucose through a series of enzyme-catalyzed reactions.
The overall process of photosynthesis not only captures carbon dioxide and converts it into glucose, a form of chemical energy, but also produces oxygen as a byproduct.
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The question is incomplete. Complete question is:
In chloroplasts, ______ from the air is converted into _______.
Construction crews sometimes use this reaction for welding underwater structures: Fe2O3 2Al → Al2O3 2Fe How many moles of iron (Fe) would be produced if 2. 50 mol Fe2O3 react? Make sure to use the correct number of significant figures in your answer. 2. 50 mol Fe2O3 = mol Fe.
Answer:
5.00
Explanation:
what is the molar mass of aluminum (Al)
Answer:
26.981539 u
Explanation:
One mole of Al atoms has a mass in grams that is numerically equivalent to the atomic mass of aluminum. The periodic table shows that the atomic mass (rounded to two decimal points) of Al is 26.98, so 1 mol of Al atoms has a mass of 26.98 g.
Answer:
2.68573957
Explanation:
Water (H2O) forms when hydrogen gas (H2) and oxygen gas (O2) react according to the equation below: 2H2 O2 → 2H2O What mass of water forms when 1. 45 × 10-3 g O2 react completely? (Molar mass of O2 = 32. 00 g/mol; molar mass of H2O = 18. 02 g/mol) 1. 63 × 10-3 g 8. 16 × 10-4 g 1. 29 × 10-3 g.
The mass of water formed in the reaction is [tex]\rm 1.63\;\times\;10^-^3[/tex] g. Thus, option A is correct.
The balanced chemical equation for the formation of water is:
[tex]\rm 2\;H_2\;+\;O_2\;\rightarrow\;2\;H_2O[/tex]
From the balanced chemical equation, 1 mole of oxygen forms 2 moles of water.
Computation for the mass of waterThe moles of a compound is given by:
[tex]\rm Moles=\dfrac{Mass}{Molar\;mass}[/tex]
The moles of oxygen reacted in the reaction are:
[tex]\rm Moles\;O_2=\dfrac{1.45\;\times\;10^-^3\;g}{32\;g/mol} \\Moles\;O_2=0.045\;\times\;10^-^3\;mol[/tex]
The moles of water formed is:
[tex]\rm 1\;mol\;O_2=2\;mol\;H_2O\\0.045\;\times\;10^-^3\;mol\;O_2=0.045\;\times\;10^-^3\;\times\;2\;mol\;H_2O\\0.045\;\times\;10^-^3\;mol\;O_2=0.09\;\times\;10^-^3\;mol\;H_2O[/tex]
The moles of water formed are [tex]\rm 0.09\;\times\;10^-^3[/tex] mol.
The mass of water is given as:
[tex]\rm Mass=Moles\;\times\;Molar\;mass\\Mass\;H_2O=0.09\;\times\;10^-^3\;\times\;18\;g\\Mass\;H_2O=1.63\;\times\;10^-^3\;g[/tex]
The mass of water formed in the reaction is [tex]\rm 1.63\;\times\;10^-^3[/tex] g. Thus, option A is correct.
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Answer: A
Explanation: 1.63 × 10^-3 g
The carboxylic acid group of aspirin is deprotonated by what ion.
Answer:
salicylate ion
Explanation:
The spectroscopic analysis of aspirin will involve the complexing of iron(III) to the deprotonated form of salicylic acid (salicylate ion) to give a purple solution.
The aspirin, which is of the carboxylic acid group, is deprotonated by salicylate ions.
What is deprotonation?Deprotonation is the removal of a proton from an acid, in an acid-base reaction.
When a proton is added to acid, the process is called protonation.
This process happens in Brønsted Lowry acids.
The aspirin, which is of the carboxylic acid group, is deprotonated by salicylate ions.
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2. In the space provided, describe the common characteristics of inner planets and outer planets.
Answer: The four inner planets have shorter orbits, slower spin, no rings, and they are made of rock and metal. The four outer planets have longer orbits and spins, a composition of gases and liquids, numerous moons, and rings
Explanation:
pls mark as brainlist by the way we are in the same school :)
Baking soda mixed with vinegar produces carbon dioxide and water. The best way to prove that no mass was lost during this reaction is to
O A use equal masses of baking soda and vinegar
O B. determine the mass of the carbon dioxide and water that is produced
OC. determine the masses of all the substances before and after the reaction
OD. compare the mass of the vinegar and water to be certain they are equal
Given what we know, we can confirm that the best way to prove that no mass was lost during the reaction would be to follow option C and determine the masses of all substances before and after the reaction.
Why is this the best method?This method provides two sets of data in order to draw a comparison. The other option will either not produce comparable data, or do not take into account all of the elements being produced.
Therefore, by comparing the mass of baking soda and vinegar before the reaction to the mass of carbon dioxide and water after the reaction, we can analyze the differences if any, and confirm that no mass was lost during the reaction.
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Explain how intermolecular attractions between molecules influence the bulk of properties of a material
Answer:
Intermolecular forces determine bulk properties, such as the melting points of solids and the boiling points of liquids. Liquids boil when the molecules have enough thermal energy to overcome the intermolecular attractive forces that hold them together, thereby forming bubbles of vapor within the liquid.
1. Which of these sentences tells a main idea of "Starting Small," the article you just read?
Ella Bradna began performing on her own at age eleven.
Girls are more likely to become circus performers than boys.
Successful circus performers start training when they are children.
Today you can't be a circus performer until you're an adult.
Answer:
"successful circus performers start training when they are children"
Explanation:
this explains it well because most skills start at a young age.
Answer: Successful circus performers start training when they are children.
Explanation:
What is the ratio of 32oz of fuel to oil for 25 to 1.
Answer:
25 to 1 fuel mix 1 gallon
Explanation:
Add two of the 2.5 ounce containers to 1 gallon of gas. For a 50:1 ratio add 1 container 2.5 ounces to 1 gallon of gas. 50=parts of fuel 1=parts of oil . For 25:1 and 2 of the 2.5 oz containers to 1 gallon of gas.
How many different types of hydrogens are present in hexane?.
Hexane is a type of hydrocarbon that consists of six carbon atoms surrounded by 14 hydrogen atoms
The pressure exerted on a 254.5 mL sample of helium gas at constant temperature is increased from 0.4750 atm to 0.778 atm. Calculate the final volume of the sample.
Answer:
155.382 mL
Explanation:
Using Boyle's Law
P1V1=P2V2
P1= Initial Pressure
V1= Initial Volume
P2= Final Pressure
V2= Final Volume
0.4750 atm (254.5mL)= 0.778 atm (V2)
120.8875= 0.778 atm (V2)
V2= 155.382 mL
I will give Brainliest!!! What kind of atoms makeup C12H22O11?
Answer:
carbon, hydrogen, and oxygen atoms
Explanation:
brainliest pls
Compare and contrast the Andes Mountains and the Rocky Mountains. How are they formed? What consumers and producers are in each?.
Answer:
ummm i need help too lol
Explanation:
what are the substances you start with in a chemical reaction called.
Which characteristic does lithium, carbon and fluorine have in common:
1. They belong to the same group
2. They have the same number of valence electrons
3. They are all non-metals
4. Their atoms have the same number of energy levels
Answer:
I think the answer is
2) They have the same number of valence electrons
which green house gas is produced by commercial refrigeration and air conditioning systems
Answer:
fluorinated gas.
Explanation:
Let me know if this helps
How many carbon atoms are there in a propane molecule?.
Answer:
3
Explanation:
The propane molecule has three carbon atoms and eight hydrogen atoms (C3H8).
What is an example of relative dating?
What is an example of absolute dating?
Explanation:
relative dating is an absolute dating is used to meet a historical remaining while relative dating to meet eligible single man. Absolute methods today can be dated in time order in the fossils and absolute dating is dated in the other layers. Posts about the relative geologic age and the rocks.
Answer:
Relative dating is used to determine the age of something based on their appearance. For example, soil that is on the surface is younger than the soil deeper down.
Absolute dating examples are finding the age of wood using carbon dating.
Explanation:
What are the functions of cardiovascular/circulatory
Answer:
The circulatory system (cardiovascular system) pumps blood from the heart to the lungs to get oxygen.
Explanation:
"The heart then sends oxygenated blood through arteries to the rest of the body. The veins carry oxygen-poor blood back to the heart to start the circulation process over".
Please help me with this please help
Answer:
I did this in class give me 10 min so i can find the anwsers
Explanation:
