Answer: The final stage of the life cycle of a tree is when it has fully grown and reached the ... You should be confident in your supplier's approach to sustainability. ... This is the first occasion you will see a stem and perhaps a couple of leaves. ... The next phase is the sapling stage, this is when the sprout continues to grow and has ...
Explanation:
Dylan is completing an experiment in science class. The teacher gave Dylan a raw egg that had the shell removed. The egg is surounded by a membrane. Dylan gently placed the egg into a solution. Below is a diagram of the concentration of water molecules in the egg and in the solution.
Based on the diagram, what will happen to the egg?
A.
It will shrink because water molecules will move out of the egg until all the water molecules are in the solution.
B.
It will swell because water molecules will move into the egg until the concentrations are equal.
C.
It will swell because water molecules will move into the egg until all the water molecules are inside the egg.
D.
It will shrink because water molecules will move out of the egg until the concentrations are equal. HELPPPPPPPPPPPPPPPPPP PLS
Answer: AA
Explanation:
What general trend applies to solubility?
(a) Temperature is not related to solubility.
(b) As temperature goes up, solubility goes down.
(c) As solubility goes up, temperature goes down.
(d) As temperature goes up, solubility goes up.
Answer:
Basically, solubility increases with temperature. It is the case for most of the solvents. The situation is though different for gases. With increase of the temperature they became less soluble in each other and in water, but more soluble in organic solvents.
what atom makes up the end of a pencil
Answer: carbon atoms
Explanation:
carbon atoms because carbon has an atomic mass of 12. Atomic mass is the mass of an atom. It is calculated as the sum of the number of protons and neutrons in the atom, because protons and neutrons make up the majority of the atom's mass.
Chem lab report is attached to the question plz help.
Answer: When I opened the doc it didn't work..
Explanation:
help please you’ll get 18 points to answer this correctly
Convert 12.04 x 1023 atoms of helium to moles
Moles of Helium = 2
Further explanationGiven
12.04 x 10²³ atoms of helium
Required
moles
Solution
The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
moles Helium :
n = N : No
n = 12.04 x 10²³ : 6.02 x 10²³
n = 2
PLS HELP ASAP! I WILL GIVE BRAINLIEST!! Which of the following explains the conservation of mass during cellular respiration? (4 points)
a The total number of atoms when carbon dioxide and oxygen react stays the same when glucose and water are produced.
b The total number of atoms when water and oxygen react stays the same when glucose and water are produced.
c The total number of atoms when carbon dioxide and water react stays the same when glucose and oxygen are produced.
d The total number of atoms when glucose and oxygen react stays the same when carbon dioxide and water are produced.
Answer:
jayfeather friend me ccccccc
Explanation:
is: cellular respiration creates an energy molecule when glucose is broken down.
Conservation of mass (mass is never lost or gained in chemical reactions), during chemical reaction no particles are created or destroyed, the atoms are simply rearranged from the reactants to the products.
True/False: There are about 400 known elements
Answer: false
Explanation:
there are no more then 112 known elements.
Answer:
false
Explanation:
their are only 118 element
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Pressure is the force
per
unit
a. volume.
b. surface area.
c. length
d. depth
Answer:
A or B
Explanation:
How many kilo joules of heat are required to the decompost 1.96 mol Nah I 3(s)
Heat required = = 126.42 kJ
Further explanationGiven
1.96 mol NaHCO₃(s)
Required
Heat needed
Solution
Reaction( decomposition of Baking soda (NaHCO₃) :
2NaHCO₃ (s) + 129 kJ ⇒ Na₂CO₃ (s) + H₂O (g) + CO₂ (g)
For 2 mol NaHCO₃ , heat needed = 129 kJ
conversion factor :
[tex]\tt \dfrac{129~kJ}{2~mol}[/tex]
So for 1.96 mol :
= 1.96 mol x (129 kJ/2 mol)
= 126.42 kJ
Tell me what you think in galaxies do aliens exist tell me why and your view
Step by step
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.
Why did Mendeleyev try to reorganize the periodic table?
Please help me ASAP
What requirements exist for a molecule to be polar?
Answer:
for a molecule to be polar to conditions must be met one we must have at least one polar bond or one lone pair on the central atom to if there are more than one polar bond they must be arranged in a way that their dipoles do not cancel
Please help me :D I’m begging rn lol
Answer:
To catch a ball, the fielder has to stop the ball. This means, force is applied against the motion of the ball. So, between the fielder applies force on the ball and the ball comes to rest, the ball moves in the direction opposite to the direction of force. Thus work is negative.
Explanation:
MARK ME AS BRAINLIEST PLSSS
What components make up an environment?
Answer:
Environment mainly consists of atmosphere, hydrosphere, lithosphere and biosphere. But it can be roughly divided into two types such as (a) Micro environment and (b) Macro environment. It can also be divided into two other types such as (c) Physical and (d) biotic environment.
Explanation:
i need help with it please
Answer:
1. cells
2. energy
3. pre-existing cells by division
Explanation:
Answer:
1. All living things have 1 or more cell
2. All organisms use a source of energy
3. All cells come form other pre-exsisting cells
Explanation:
True or false most oils tend to dissolve best in nonpolar solvent
Answer:
true
Explanation:
water is polar, and oil and water do not mix. nonpolar solvents do not like or mix with water, so they do not dissolve in water. so it's true.
HELPPP
i’ll give brainly :)))
Answer:
12. 2.9 g= 0.0029 13. 14.7 L = 14700 ml
14. The chemical formula of magnesium hydroxide is Mg(OH)2, and its molar mass is 58.32 g/mol.
Explanation:
(NH4)2SO4. How many N are there?
A car left from its initial position at 6 pm. The car arrived at its final position at 11pm. How much time did it take the car to arrive ?
Answer:
5 hours.
Explanation:
Given that,
Initial time, [tex]T_i=6\ pm[/tex]
Final time, [tex]T_f=11\ pm[/tex]
We need to find how much time did it take the car to arrive.
Time = final time-initial time
= 11 pm - 6 pm
= 5
So, it takes 5 hours by car to arrive.
How many boys are in this pedigree?
Answer:
the answer is three 3
......
a letter stating three things that need urgent fixing in your school
Answer and Explanation:
Computers ( The computers are very old and very slow, and we have to notice that almost everyone are using computers at the same time at the school, which makes it even harder for it to load up assignments. )The Rick Rolling ( Everyone keeps sending links to teachers and students saying that it is part of some assignment but then you have to listen to Rick Astley, they should really block these links. )The lockers ( The lockers are also very old and they are breaking down and rusting a lot from the moisture in the hallways. One of the lockers even broke down today!!! I hope they can fix this so no one else gets hit with a locker door. )Hope this helps! ;)
What is a poverty line?
what is the density of a 12-gram sample of zinc with volume of 8.4 cm3?
pls hurry pls
AnswerIm telling your teacher "Ms.Byrd" your in 8th grade and go to berry middle?
Explanation:
How many molecules are in 0.23 moles of CaCl2?
A) 2.62 x 10^24 molecules of CaCl2
B)1.39 x 10^23 molecules of CaCl2
C) 2.61x 10^23 molecules of CaCl2
D) 3.82 x 10^-25 molecules of CaCl2
Previous
Answer:
1.39 × 10²³ molecules of CaCl₂
Explanation:
Given data:
Number of moles of CaCl₂ = 0.23 mol
Number of molecules = ?
Solution:
Avogadro number:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ molecules
0.23 mol × 6.022 × 10²³ molecules / 1mol
1.39 × 10²³ molecules
An 240. mL sample of oxygen at 90.00C and was cooled at constant pressure
until it has a volume of 450.0 mL. What was the final Celsius temperature of this
gas? *
The final temperature : T₂ = 680.625 K
Further explanationGiven
V₁=240 ml
T₁ = 90 + 273 = 363 K
V₂ = 450 ml
Required
The final temperature
Solution
Charles's Law
When the gas pressure is kept constant, the gas volume is proportional to the temperature
[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
Input the value :
T₂ = V₂T₁/V₁
T₂ = 450 x 363 / 240
T₂ = 680.625 K
One mole of silver has a mass of 107.9 grams. Approximately how many atoms of silver are present in one mole of silver?
A) 107 atoms
B) 108 atoms
C) 6 × 1023 atoms
D) 53 × 1023 atoms
Answer C) 6 × 1023 atom
The number of silver atoms present in one mole of silver is 6.0 × 10²³ atoms. The correct option is C) 6 × 1023 atoms
StoichiometryFrom the question, we are to determine the number of silver atoms present in one mole of silver.
From the formula,
Number of atoms = Number of moles × Avogadro's constant
Number of atoms = 1 × 6.022 × 10²³
Number of atoms = 6.022 × 10²³
Number of atoms ≅ 6.0 × 10²³ atoms
Hence, the number of silver atoms present in one mole of silver is 6.0 × 10²³ atoms. The correct option is C) 6 × 1023 atoms
Learn more on Stoichiometry here: https://brainly.com/question/16505596
A regional metamorphic belt is divided into zones based upon
If 1.2 g of ammonium bicarbonate is treated with .75 grams of sodium chloride, 63.0075 grams sodium bicarbonate will be produced. In this reaction NaCI is limiting reagent. True or false
Answer:
True
Explanation:
Limiting reagent is the reactant that determines the progress of the reaction. It determines how much of the product is formed.
The equation for this reaction is;
NaCl (aq) + NH4HCO3 (aq) → NaHCO3 (aq) + NH4Cl (aq)
From the reaction, 1 mol of NaCl reacts with 1 mol of NH4HCO3 to produce 1 mol of NaHCO3
Converting to masses using; Mass = Number of moles * Molar mass
58.44g of NaCl reacts with 79.056g of NH4HCO3
If we were to sue the whole 1.2 g of NH4HCO3 we would require xg of NaCl
58.44 = 79.056
x = 1.2
x = 0.887g
The fact that 1.2g of NH4HCO3 requires 0.887g of NaCl (which is less than the available 0.75g) means that NaCl is the limiting reagent.