Answer:
I do not know. I think there is .as we are the living creatures in this earth. maybe aliens are creatures of other planet or galaxies. I am not scientists to prove it.sorry.
How many grams of water are produced when oxygen reacts with an excessive amount of propane (C3H8)?
Answer:
From the equation you will see that 1 mol of propane generates 4 mols of water.
Since the molar mass of water
M ( H2O)=2×1+16=18g/mol
2 mol propane will generate
2 ×4×18=144g of water
Explanation:
Since the molar mass of water
M ( H2O)=2×1+16=18g/mol
2 mol propane will generate
2 ×4×18=144g of water
What step of the water cycle has the most direct impact on freshwater storage
Answer:
Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation, and runoff.
Explanation:
The objects potential energy at point Y is less its potential energy at which of the following points
Answer:
C
Explanation:
increase potential energy ( in motion)
What are the parts of the cell theory?Mark all that apply
Answer:
Cell theory states that cell living organisms are composed of at least one cell, which are the basic unit of life. Cells are always produced from other living cells, and cannot spontaneously generate
Do liquids have kinetic energy? Yes or no.
Answer:
YESSIR
Explanation:
Structural formula for:
5 - methyl hept - 3 - enal
Answer:
draw the carbon chain is containing 6 carbon then attach the aldehyde group with edge carbon in chain then put the put double bond at 3 no. carbon
Can a hype Glow in the dark ?
what is the chemical name for K2Se
Answer:
Potassium selenide
Explanation:
Potassium selenide (K2Se)
Answer:
Potassium selenide
Explanation:
If scientists had tried to repeat thomosons experiment and found that they could not would thomosons cocnclusion still have been valid?
Answer:
No
Explanation:
The conclusions from Thomoson's claims would be invalid if his experiment could not be replicated.
One of the attributes of a valid experiment in science is replication. That is, an experiment must be repeatable with similar outcomes under similar conditions as the original experiment when independently performed by another scientist. Once an experiment cannot be replicated, the outcomes of such an experiment become invalid in science.
Hence, Thomoson's conclusion would be invalid if his experiment could not be replicated.
Which formula represents a
polar molecule
containing polar covalent bonds?
A. H2O
B. CO2
C. NaCL
D. Cl2
Answer:
A. H2O
Explanation:
Let us first define the three types of bonds:
1. Nonpolar Covalent: electronegativity difference < 0.4
2. Polar Covalent: electronegativity difference between 0.4 and 1.8
3. Ionic: electronegativity difference > 1.8
This will help us eliminate choices C and D:
-NaCl has a electronegativity difference of 3.0 - 0.9 = 2.1 (ionic bond)
-Cl2 has a electronegativity difference of 3.0 - 3.0 = 0 (nonpolar covalent bond)
However, we still have two more options, A and B, but they are not diatomic for us to use the electronegativity differences with.
We must now consult their geometries. Because CO2 has a linear geometry (O=C=O), the two sides will cancel each other out, resulting in a nonpolar covalent bond. At this point, by process of elimination, we can already determine the answer to be A. H2O. We can verify this by looking at the geometry of H2O, which is bent (H-O-H; imagine the O is above the H's, I cannot draw it in this response). H2O's bent geometry classifies it as polar covalent; the electrons are slightly more attracted towards the O, the more electronegative element. Side note: this makes the O slightly more negative in charge, whilst the H's are slightly more positive in charge.
P.S. I apologize for not being able to draw and demonstrate that last paragraph, but I hope you get a general idea. You can search up the "H2O geometry" and "CO2 geometry" to get a better idea! :)
H₂O represents a nonpolar molecule containing polar covalent bonds. Hence Option (A) is correct
What is Polar Covalent Bond ?A polar covalent bond exists when atoms with different electronegativities share electrons in a covalent bond.
Consider the hydrogen chloride (HCl) molecule. Each atom in HCl requires one more electron to form an inert gas electron configuration.
Water (H₂O), like hydrogen Chloride (HCl), is a polar covalent molecule. When we look at a diagram of water , we can see that the two hydrogen atoms are not evenly distributed around the oxygen atom
Water (H₂O) is polar because of the bent shape of the molecule. The shape means most of the negative charge from the oxygen on side of the molecule and the positive charge of the hydrogen atoms is on the other side of the molecule.Thus, This is an example of polar covalent chemical bonding.
Therefore, H₂O represents a nonpolar molecule containing polar covalent bonds. Hence Option (A) is correct
Learn more about bonding here :
brainly.com/question/1603987
#SPJ2
I 3. How many moles of H, gas are made when 3.2 x 1023 molecules of HCl are used? 2A1 + 6HCI ----> 2AlCl3 + 3H2
Answer:
0.265 moles
Explanation:
From the equation given;
Number of moles of HCl is 6 while number of moles of H is 3.
Now, we know from avogadro's number that 1 mole of a gas = 6.022 × 10^(23) molecules.
We want to find the number of moles of Hydrogen gas made when 3.2 x 10^(23) molecules of HCl are used.
Thus, converting this to moles gives;
(3.2 × 10^(23))/(6.022 × 10^(23)) = 0.53 moles
Thus, we can find the number of hydrogen gas by proportion as;
n = 3/6 × 0.53
n = 0.265 moles
True or False- Waves are caused by the water being pushed by the wind, which transfers energy, that can cause erosion to the shorelines .
Answer:
false
Explanation:
Waves are created because othe the lunar pull with out the moon we wouldnt have waves
If a 6N weight is hung on a spring, and it extends by 0.2m, what is the spring constant (k)? What do you think the units are?
Answer:
K = 30N/m
Explanation:
We use this equation:
F= k∆x
Where ∆x refers to the amount or stretch or compression and k is the spring constant.
F = force
k = spring constant
∆x = change in length of spring
We don't know the value of k, so we make k the subject:
k = F/∆x
k = 6N x 0.2m
k = 30N/m
How many grams are there in 2.75E23 molecules of C2H6 (MM = 30 grams)?
Answer:13.70 i think
Explanation:
What do all of the inventors discussed in this lesson have in common?
1. All of the inventors can be characterized as problem-solvers.
2. All of the inventors used engineering principles to create new things.
3. All of the inventors created new things as children.
4. All of the inventors needed mathematics principles to formulate solutions.
PLEASE I NEED helppp
Enter the correct 4 digit code (no spaces)
Give an example of gravitational potential
A raised weight.
Water that is behind a dam.
Have a nice day!
Answer:
When something has a high position, its gravitational potential energy is high. For example, a book on a high bookshelf has higher potential energy than a book on the bottom shelf because it has farther to fall. ... A book on a table before it falls. A child at the top of a slide.
Explanation:
U=m g h
Find molar mass of a gas when the density is given as 1.25g / L
Please help me its balancing the equation
Answer:
1, 2, 2, 1
Explanation:
2C4 H10 + 13O2 -→ 8CO2 + 10H2O If 356 moles of O2 are available to react, how many moles of CO2 will fom?
Answer:
Answer:
The mole ratio of C₄H₁₀ and CO₂ is 2 : 8, which simplifies to 1 : 4.
Explanation:
The mole ratio is the relative proportion of the moles of products or reactants that participate in the reaction according to the chemical equation.
The chemical equation given is:
2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O
Once you check that the equation is balanced, you can set the mole ratios for all the reactants and products. The coefficients used in front of each reactant and product, in the balanced chemical equation, tells the mole ratios.
In this case, they are: 2 mol C₄H₁₀ : 13 mol O₂ : 8 mol CO₂ : 10 mol H₂O
Since you are asked about the mole ratio of C₄H₁₀ and CO₂ it is:
2 mol C₄H₁₀ : 8 mol CO₂ , which dividing by 2, simplifies to
1 mol C₄H₁₀ : 4 mol CO₂, or
1 : 2.
Explanation:
Suggest why we have discovered more elements today compared to our ancestors 50,000 years ago
Answer:
well, we have so much better and more tech and we are a lot smarter than we were before.
Explanation:
Answer:
We have way more advanced technology than our ancestors and we have a better idea of how the earth was millions of years ago.
Explanation:
The air we breathe contains different individual gases (mostly nitrogen and oxygen). Which of the following correctly describes the air we breathe?
a
element
b
compound
c
mixture
d
none of these
please help this will help my grade a lot
Answer:
a- customary systems..
If a plant cell is placed in a solution and the cell shrivels up, what type of solution was it placed in? How do you know?
Answer:
The cell is in a Hypotonic solution. When a cell is in a Hypotonic solution the lower osmotic pressure causing water to move across the pressure gradient into the solution causing the cell to shrivel.
how many grams of PH3 will be produced if 6.0 l of H2 are used?
Mass of PH3= 6.086 g
Further explanationGiven
6.0 L of H2
Required
mass of PH3
Solution
Reaction
P4 + 6H2 → 4PH3
Assumed at STP ( 1 mol gas=22.4 L)
Mol of H2 for 6 L :
= 6 : 22.4 L
= 0.268
From the equation, mol PH3 :
= 4/6 x moles H2
= 4/6 x 0.268
= 0.179
Mass PH3 :
= 0.179 x 33,99758 g/mol
= 6.086 g
How are a carrot, an amoeba, and a bacterium alike?
They are prokaryotes.
They are eukaryotes.
They are all made of cells.
They all live in soil.
Answer:
They are all made of cells
Answer: They are all made of cells.
Explanation:
Which factor is responsible for the dry period
Answer:
drought
Explanation:
because it looses all of the water in the aria / desertification
i need help:((( like now pls
Answer:
I think #5 is its structure
Explanation:
Answer: The first is Genes and the second one is the structure.
Explanation:
Can you help me please?
Answer:
A. the light subatomic.... is correct answer
1. Rank the following solutions in order of increasing
concentration: Solution A, 0.5 moles of sucrose
in 2.0 liters of solution; Solution B, 1.0 moles of
sucrose in 3.0 liters of solution; Solution C,
1.5 moles of sucrose in 4.0 liters of solution.
The order of the solutions from lowest to highest concentration : A, B, C
Further explanationGiven
the following solutions
Required
order of increasing concentration
Solution
Molarity shows the number of moles of solute in every 1 liter of solution.
[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]
Solution A : 0.5 moles : 2 L solution = 0.25 M
Solution B : 1 moles : 3 L solution = 0.33 M
Solution C : 1.5 moles : 4 L solution = 0.375 M