Answer:
Explanation:
budding
Figure 13.3 (a) Hydra reproduce asexually through budding: a bud forms on the tubular body of an adult hydra, develops a mouth and tentacles, and then detaches from its parent. The new hydra is fully developed and will find its own location for attachment.
What does one mole of H2O correspond to?
A.
6.02 × 1023 molecules of H2O
B.
6.02 × 1023 atoms of H and 6.02 X 1023 atoms of O
C.
6.02 × 1023 atoms of O
D.
6.02 × 1023 atoms of H
E.
6.02 × 1023 × 2 atoms of H
Answer:
Its A
Explanation:
Just took the test and got a 100%
plz help with this.....☺
Answer:
There is this property called CATENATION which is basically the tendency of the atoms to bind to eachother. It is the MOST in the carbon after that silicon.
So the answer should Carbon atoms bond together to form groups of compounds.
Depicted below you will see the molecules COH2 and SO3 . Why is COH2 polar while SO3 isn’t?
Answer:
See explanation
Explanation:
When we look at SO3 we will notice that the compound is trigonal planar and it is symmetric. This means that it has equal charge distribution hence its dipoles cancel out resulting in a zero net dipole moment.
However, COH2 is also trigonal planar but is non-symmetric. Hence, its dipole moments do not cancel out, hence the molecule has a resultant dipole moment and is a polar molecule
can you help please??
Answer:
no
Explanation:
Answer:
The answer is B
The half-life of carbon-14 is 5,730 years. Dating organic material by looking for C-14 can't be accurately done after 50,000 years. Suppose a fossilized tree branch originally contained 4.30 grams of C-14. How much C-14 would be left after 50,000 years?
Answer:
0.010g of C-14 would be later after 50,000 years
Explanation:
The kinetics of radioactive decay follows the equation:
Ln (N / N₀) = -kt
Where N could be taken as mass after time t,
N₀ initial mass = 4.30g;
k is rate constant = ln 2 / t(1/2)
= ln 2 / 5730years = 1.2097x10⁻⁴ years ⁻¹
Replacing:
Ln (N / 4.30g) = -1.2097x10⁻⁴ years ⁻¹ * 50000 years
N / 4.30 = 2.36x10⁻³
N =
0.010g of C-14 would be later after 50,000 yearsan ionic compound is formed when
You have a 155-g sample of Al2O3. If there are 22.5 g of Al in the solution, what is the percent by mass of the solute? Use details to support your answer.
Answer:
14.52%
Explanation:
The percentage by mass (WW%) is calculated by using the formula:
Mass of solute/mass of solution ×
100
The solute (Al) is 22.5g while the solvent (Al2O3) is 155g
Hence, percent by mass is:
22.5/155 × 100
= 0.1452 × 100
= 14.52%
An element X that has 15 protons and 15 electrons, loses three
electrons to form an ion.
What will be the charge on the ion?
What will be the number of protons and electrons in the ion?
Answer:
+3
12 electrons and 15 protons.
Explanation:
The element having 15 electrons and 15 protons have atomic number 15. We know that when an atom lose or gain the electron ions are formed.
Anion formation:
Anion is formed when electron is accept by an atom.
X + e⁻ → X⁻
Cation formation:
Cation is formed when electron lose be an atom.
X → X⁺ + e⁻
The given atom loses 3 electrons thus oxidation number will be +3 and cation is formed.
X → X³⁺ + 3e⁻
Now element X have 15 protons and 12 electrons.
if we weigh 30 kgf on the earth,how much will you weigh on the moon
Answer:
5
Explanation: 1/6 of 30 is 5
please help fast
I WILL MARK YOU AS BRAINLIEST
Answer:
c
Explanation:
all the atoms must be balanced.
Q3: Fingers and hands pulling, pushing, pressing, or lifting are all examples of applying a
Is it friction gravity motion or force
Answer:
force
Explanation:
because the force
Differentiate between physical and chemical change
Explanation:
Physical Change is a type of change where by no new chemical substance is formed. Physical changes are reversible. whilst Chemical change is a change where new chemical substance is always formed. Chemical changes are usually irreversible.
Examples of Physical Change include;
Melting of Ice
Melting of Candle
Grinding of chalk
Magnetization of Iron
Examples of Chemical Change includes;
Cooking of food
Rusting of Iron
Burning of Charcoal
Which of the following notations is the correct noble gas configuration for Li
Noble gas configuration for Li : [He]2s¹
Further explanationIn an atom, there are levels of energy in the shell and sub-shell
This energy level is expressed in the form of electron configurations.
Lithium with atomic number 3, then the electron configuration:
1s²2s¹
And for noble gas configuration or it can be called Condensed electron configurations :
[He]2s¹
Answer:
[He]2s¹
Explanation:
How many Oxygen atoms are present in this
molecular formula: 2CO2?
Who is best associated with Psychoanalysis?
-Wilhelm Wundt
-Sigmund Freud
-William James
-None of the above
-Other:
Answer:
None of the above
Explanation:
Erikson's was a student of freud's and expanded of his theory of psychosexual development by emphasizing the importance of culture in parenting practices and motivations and adding three stages of adult development.
What does a particular point on a line of a phase diagram represent ?
Answer:
the line represents the condition where pressure and heat have the same effects.
Answer: C) The melting point of a substance at a specific pressure.
What does unsaturated zone mean?
.) 1. The Lewis valence dot electron structures are used to illustrate the number of valence electrons of atoms of representative elements. Considering this, use the Periodic Table to predict the number of "dots" that should be drawn around Antimony (Sb) to represent its Lewis Dot Structure.
Answer:
put 5 dots
Explanation:
it has 5 valence electrons
Answer:
5
Explanation:
Antimony is in group 15 of the periodic table which means it has 5 valence electrons. Therefore, its Lewis Diagram should contain 5 dots to represent these 5 valence electrons.
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How many moles of oxygen are needed to burn 2.7 moles of methyl
alcohol (CH3OH)?
2CH2OH + 302 -→ 2CO2 + 4H2O
please show how you got it
Answer:
3.38 moles of O2.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
4CH2OH + 5O2 → 4CO2 + 6H2O
From the balanced equation above,
4 moles of CH2OH required 5 moles of O2 for complete combustion.
Finally, we shall determine the number of mole of O2 needed to react with 2.7 moles of CH2OH. This can be obtained as follow:
From the balanced equation above,
4 moles of CH2OH required 5 moles of O2 for complete combustion.
Therefore, 2.7 moles of CH2OH will require = (2.7 × 5)/4 = 3.38 moles of O2 for complete combustion.
Thus, 3.38 moles of O2 is required.
Which of the following is not an example of biased language?
a.
“You are too short to reach that.”
b.
“Are you deaf?”
c.
“Move along, grandpa!”
d.
“I think I’ve been gypped.”
Answer:
I think it is D.
Explanation:
Answer:
b
Explanation:
Identify the Lewis acid in this balanced equation:
Upper A g superscript plus, plus 2 upper N upper H subscript 3 right arrow upper A g (upper N upper H subscript 3) subscript 2 superscript plus.
Answer:
1
Explanation:
Ag+
From the given reaction, it is clear that, Ag is gaining electrons from the base NH₃ . Hence, according to Lewis concept of acids and bases, Ag⁺ is the Lewis acid.
What is Lewis concept of acids and bases ?There are various concepts to define acids and bases. Among which the first was Arrhenius theory. This theory states that, acids are substances which can furnish H+ in solution and bases are substances giving OH- in solution.
Then Bronsted- Lowry concept states acids as proton donor and bases as proton acceptors. The most applicable theory for acids and bases is Lewis concept.
According to Lewis theory of acids and bases, acids are electrons acceptors and bases are electron donors.
The given reaction is written as:
[tex]\rm Ag^{+} + 2NH_{3} \rightarrow Ag(NH_{3})_{2}[/tex]
Here, Ag⁺ is the Lewis acid which accepts an electron from the Lewis base NH₃.
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Identify the type of chemical reaction that is described.
Answer:
Explanation:
A. Decomposition
B. Synthesis
C. Combustion
D. neutralization
Why are city streets so vital to the functioning of a city, as well as the people living within it?
Pls help: What is the net equation for CNO cycle?
Answer:
The CNO cycle (for carbon–nitrogen–oxygen) is one of the two known sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton–proton chain reaction (pp-chain reaction). Unlike the latter, the CNO cycle is a catalytic cycle.
Why is aspirin sometimes buffered? Will give brainliest.
Answer: the aspirin also contains a buffering agent—usually MgO—that regulates the acidity of the aspirin to minimize its acidic side effects.
Explanation:
Because the acid residences of aspirin may be complex, many aspirin manufacturers provide a "buffered aspirin" form of the drug. In these cases, the aspirin additionally includes a buffering agent-normally MgO-that regulates the acidity of the aspirin to minimize its acidic aspect consequences.
Why may a buffer be added to aspirin?Buffering agents are utilized in tablet formulations to grow the dissolution and absorption of vulnerable acid pills together with salicylic acid, aspirin, and p-aminosalicylic acid as well as to lower gastric infection of lively ingredients.
Why is buffered aspirin not a buffer?So-called "buffered aspirin" isn't surely a buffer, because it does no longer face up to acids and bases. it's miles sincerely aspirin mixed with a primary compound, consisting of magnesium carbonate or aluminum hydroxide, which neutralizes some belly acid.
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How many neutrons are present in 1 atom of chlorine?
A.
18
B.
32
C.
16
D.
25
Answer:
18
Explanation:
17 protons + 18 neutrons = 35
17 protons + 20 neutrons = 37 particles in the nucleus
Hope this is right
Hope this helps
Heat being transferred from a hot pan to our food while cooking is an example of... *
conduction
convection
radiation
transpiration
A.conduction i hope it helps
Answer:
conduction
Explanation:
Which evidence is an indication that a chemical reaction has occurred?
a.melting substance
b.boiling substance
c.frezzign of substance
d.formation of a gas
Answer is D formation of gas.
Explanation: I hope that helped/have a great day.
Which of the following is the FIRST step in solving the SI conversion problems?
PLEASE HELP, WILL MARK BRAINLIEST!!!
A) Fill in the "railroad tracks".
B) Write the relationship between the 2 units.
C) Review the SI prefixes.
D) Move decimals around to ensure the answer is in scientific notation.
Answer:
A
Explanation:
Answer:
It is A!
Explanation: