Answer:
B) a predator
What is the number of moles of glucose (C₆H₁₂O₆) in 0.500 L of a 0.40 M solution?
Answer:
0.20 moles
Explanation:
In order to solve this problem it is necessary to keep in mind the definition of molarity:
Molarity = moles / litersIf we input the data given by the problem we're left with:
0.40 M = moles / 0.500 LMeaning that we can proceed to calculate the number of moles:
moles = 0.40 M * 0.500 Lmoles = 0.20 molesThe number of moles of glucose ([tex]C_6H_{12}O_6[/tex]) in 0.500 Liters of a 0.40 M solution is 0.2 moles.
Given the following data:
Molarity of solution = 0.40 MVolume of solution = 0.500 LTo determine the number of moles of glucose ([tex]C_6H_{12}O_6[/tex]) in 0.500 Liters of a 0.40 M solution:
Mathematically, the molarity of a solution is given by the formula:
[tex]Molarity = \frac{number\;of\;moles}{Volume \;in\;liters}[/tex]
Making number of moles the subject of formula, we have:
[tex]Number\;of\;moles = Molarity \times Volume[/tex]
Substituting the given parameters into the formula, we have;
[tex]Number\;of\;moles = 0.40 \times 0.500[/tex]
Number of moles = 0.2 moles.
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grade 8 chem/ science
Answer:
reactants
Explanation:
have a good day!
When two atoms form a molecule, the molecule has lower energy than the two separate atoms. However, when only two atoms are present, they bounce off each other and do not form a molecule. Explain what happens to the energy of the atoms when there are only two atoms and they collide.
DONT GIVE ME A LINK!!
Answer:
they end up bouncing against each other instead of merging together
Explanation:
What happens as liquid water boils?
A) The molecules are destroyed.
B) The mass of the molecules decreases.
C) The molecules become separated from each other.
D) The molecules break down into hydrogen and oxygen atoms.
Answer:
C) The molecules become separated from each other.
Explanation:
help me pass this test my last day of school is may 26 if you don’t mind I have more questions :)
Answer:
equal
Explanation:
How many grams of sugar (C12H22011) is needed to make a 1.3 L solution that is 0.13 M?
bacterial cells.
Which label belongs in the area marked animal?
nucleus
DNA
cell wall
ribosomes
Answer:
I believe it would be (nucleus)
Awnser all of them if you can its really EASY im feelin generous today 30 pts
Answer: 1. Synthetic Substance or Synthetic compound 2. Oil 3. Biofuels 4. Salt and Sugar 5. medicine 6. Synthetic 7. Background Knowledge and Visualizing
Explanation: Hope this helps! Good luck!
Answer:
1= synthetic substance
2= natural gas
3= alcohol
4=artificial musks
5= medicine
6= synthetic
7=Questioning the Text
Explanation: If my answers are correct please mark me as a brainlist.
What is the best explanation for the fact that Styrofoam will not dissolve in water, but Styrofoam will dissolve in acetone?
1.styrofoam is polar and water is nonpolar
2.styrofoam is nonpolar and water is polar
3.Styrofoam is polar and water is polar
4.styrofoam is nonpolar and water is nonpolar
How many moles of SO3 are in 2.4 *10^23 cules?
Answer:
0.4 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
We have
[tex]n = \frac{2.4 {10}^{23} }{6.02 \times {10}^{23} } = \frac{2.4}{6.02} \\ = 0.3986...[/tex]
We have the final answer as
0.4 molesHope this helps you
Select the correct answer.
A compound has an empirical formula of C2H5. What is true about this empirical formula?
ОА It models the structure of the compound.
ОВ. It shows the ratio of elements in the compound.
Ос. . It gives the mass of each atom in the compound.
OD. It indicates the number of atoms in the compound.
O E. It describes only this one compound.
Answer: OB
Explanation:
The empirical formula of an element is the simplest formula of an element which shows the ratios of atoms of the each element present in a molecule of a compound .
The individuality of an organism is
determined by the organism's
A) amino acids
B) DNA nucleotide sequence
C) nitrogenous bases
D) transfer RNA molecules
Hydrogen gas reacts with oxygen gas to form water. At STP, how many liters of hydrogen gas react with 32.4 liter of oxygen gas? (H2 + O2 -> H2O)
Answer:
I think its 1.2L? i may be wrong
Explanation:
Recall old Avogadro's hypothesis...........
Equal volumes of gases contain AN EQUAL NUMBER of PARTICLES
And thus if there are
2.4
⋅
L
of dihydrogen, stoichiometric equivalence requires
1.2
⋅
L
of dioxygen. How many litres of water g
The chemical name for MgCl3
Answer:
The chemical name is magnesium chloride
Answer:
Magnesium chloride
Please mark as brainliest if answer is right
Have a great day, be safe and healthy
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Which of these is not an organ in the
digestive system?
A. heart
B. stomach
C. intestine
Answer:
a
Explanation:
organs are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system. The small intestine has three parts.
Name the sub atomic particles in part Z of a boron atom give the relative charges of these sub atomic particles
Answer:
Neutrons and protons
Explanation:
There are three fundamental subatomic particles, these are;neutrons protons and electrons.
Ernest Rutherford successfully showed that every atom does possess a central core that contain positively charged particles (protons) called the nucleus. Chadwick later discovered the existence of neutrons.
Both protons and neutrons are found in the nucleus. Z represents the nucleus of the boron atom and houses the neutrons and protons of the boron atom.
What type of molecule is shown below?
H H
| |
H-C-C-0-H
|
Η Η
A. Ether
B. Aldehyde
C. Ketone
D. Alcohol
The type of molecule which is shown in the given question is alcohol, due to presence of hydroxyl group.
What are functional groups?Funcional groups are those specific groups which after attaching to any compound changes the property of that compound and then that compound will known by the propeties of that functional group.
Given molecule has the molecular structure CH₃-CH₂-OH, means in this molecule hydroxyl group is present which defines the general properties of alcohol.
Hence given molecule is an alcohol.
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What is the connection between iozination energy, electronegativity, and electron affinity of elements
Answer:
Explanation:
The three of them increase from left to right across the periods of the periodic table, and at the same time, they decrease from up to down across the groups of the periodic table.
Ionization Energy is defined as the energy required to remove the atom of an electron.
Electron affinity is defined as the change in energy when electron is added to a negative ion.
Electronegativity is the ability of an atom to attract other atoms to itself.
Can magic 8 ball wash with water?
an organism that a parasite lives in or on is a
A. prey
B. host
C. consumer
D. prey
If some salt were accidently spilled as it was transferred from the balance to the cup would your calculated enthalpy of solution of the salt be too high or too low
Answer:
It would be to low
Explanation:
If some salt were accidently spilled as it was transferred from balance to cup calculated enthalpy of solution of salt be too low as there will be loss in mass which would lead less solubility of salt and hence less enthalpy.
What is solubility?Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
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Calculate the potential energy of a block of mass of mass 0.3kg and at a height 2.6m above the ground.(take acceleration due to gravity:10m/s)
Explanation:
Mass (m)=0.3 kg
height(h)=2.6 m
acceleration due to gravity (g)=10m/s^2
Potential energy= MGH
=0.3×10×2.6
7.8 J
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how many ml of 10.0 m cacl2 do we need to prepare 3.00 l of a 0.500 m cacl2 solution
Answer:
150 mL
Explanation:
From the question given above, the following data were obtained:
Molarity of stock solution (M₁) = 10 M
Volume of diluted solution (V₂) = 3 L
Molarity of diluted solution (M₂) = 0.5 M
Volume of stock solution needed (V₁) =?
The volume of stock solution needed can be obtained as follow:
M₁V₁ = M₂V₂
10 × V₁ = 0.5 × 3
10 × V₁ = 1.5
Divide both side by 10
V₁ = 1.5 / 10
V₁ = 0.15 L
Finally, we shall convert 0.15 L to mL. This can be obtained as follow:
1 L = 1000 mL
Therefore,
0.15 L = 0.15 L × 1000 mL / 1 L
0.15 L = 150 mL
Therefore, the volume of the stock solution needed is 150 mL
2C2H6 + 8O2 = 4CO2 + 6H2O
My teacher wants to know how many moles are required, how many moles oaf carbon dioxide are produced and how many moles of water are produced. Can somebody please help me?
Answer:
4 moles of carbon
6 moles of water
Explanation:
I think as there no data given u have to is the numbers infront of the equation e.g 4CO2 so 4.
hope this helps :)
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Which of the following are indicators of a healthy water source?
A.high nitrates, high pH, and low temperatures
B.low temperature, high dissolved oxygen, and neutral pH
C.low pH, high nitrates, and low dissolved oxygen
D.high turbidity, high dissolved oxygen, and high temperature
Answer:
B.
Explanation:
B. low temperature, high dissolved oxygen, and neutral pH
Hope this Helps.
atoms of which of elements will form covalent bonds in a compound
A. C and O
B. Na and F
C. Co and Fe
D. Li and Al
____N2 + ____H2 ____NH3
Answer:
N2 + 3H2 + 2NH3
Explanation:
I'm assuming you're balancing the chemical equation
[tex]nitrogen \: reacts \: with \: hydrogen.[/tex]
N2 + 3H2 → 2NH3.
Explanation:-
L.H.S.
N = 2, H = 3×2 = 6.
R.H.S.
N = 2, H = 3×2 = 6.
Nearly ¾ of the world's surface is covered with water so most of the earth's living things live in the
Answer:
ocean
Explanation:
aavssdbvsvasgvesvdbvsvdbvv
Answer:
oceans/lakes/ponds/rivers/creeks/seas
Explanation:
What is the number of moles of Sodium Chloride (NaCl) that is present in 29.22g sample of it?
Answer:
[tex]\boxed {\boxed {\sf 0.5000 \ mol \ NaCl}}[/tex]
Explanation:
We are asked to convert grams to moles. We must use the molar mass or the grams in 1 mole of a substance. These values are found on the Periodic Table as the atomic mass, but the units are grams per mole (g/mol) instead of atomic mass units (amu).
We are given the compound sodium chloride or NaCl. Look up the molar masses of the individual elements.
Na: 22.9897693 g/mol Cl: 35.45 g/molThe formula for the compound does not contain any subscripts, so there is 1 mole of each element in 1 mole of the compound. Add the molar masses together to find sodium chloride's molar mass.
NaCl: 22.9897693 + 35.45= 58.4397693 g/molNow we can use the molar mass to create a ratio. We know there are 58.4397693 grams of NaCl in 1 mole of NaCl.
[tex]\frac {58.4397693 \ g \ NaCl}{ 1 \ mol \ NaCl}[/tex]
Multiply by the number of grams provided in the problem: 29.22
[tex]29.22 \ g\ NaCl*\frac {58.4397693 \ g \ NaCl}{ 1 \ mol \ NaCl}[/tex]
Flip the ratio so the units of grams of NaCl cancel.
[tex]29.22 \ g\ NaCl*\frac { 1 \ mol \ NaCl}{58.4397693 \ g \ NaCl}[/tex]
[tex]29.22*\frac { 1 \ mol \ NaCl}{58.4397693}[/tex]
[tex]\frac {29.22}{58.4397693} \ mol \ NaCl[/tex]
[tex]0.5000019738 \ mol \ NaCl[/tex]
The original measurement of grams has 4 significant figures, so our answer must have the same. For our answer, that is the ten-thousandth place. The 0 to the right of this place (0.5000019738) tells us to leave the 0 in the ten-thousandth place.
[tex]0.5000 \ mol \ NaCl[/tex]
There are approximately 0.5000 moles of sodium chloride in a 29.22 gram sample of sodium chloride.
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Imagine that you are Andreas Vesalius. Write a short autobiographical statement that talks about who you are, where you’re from, and some of your important contributions.
Answer:
My name is Andreas Vesalius and I'm a 16th-century Flemish anatomist, physician, and author of one of the most influential books on human anatomy, De Humani Corporis Fabrica Libri Septem. I am often referred to as the founder of modern human anatomy. I was born in Brussels, December 31, 1514 which was then part of the Habsburg Netherlands. I was a Flemish doctor who was notable for my contribution to the science of anatomy of the human body. I was the first to perform public dissection on a human corpse, a practice that was unusual in the Middle Ages due to spiritual beliefs.
Explanation: