Answer:
chloroplasts, cell walls, or intracellular vacuoles
Explanation:
You didn't list the following, but I'm guessing it is chloroplasts, cell walls, or intracellular vacuoles
What does supersaturated mean?
A.The solvent is holding as much solute as it can
B.The solvent can hold more solute
C.There is more solute than the solvent can hold
Explanation:
There is more solute than the solvent can hold (C).
please help me i willgive brain list
Answer:
the molecular formulas of:Butane is C4H10butene is C4H8Butyne is C4H6.Hexane is C6H14Hexene is C6H12Hexyne is C6H10hope it helps........M. element
cenabrecht
0.5 mele of an
Answer:
Number of moles (n)=
molecular weight
weight
Weight=n×Molecular weight
=0.5×14
Mass=7g
Iron (ii) chloride solution is changed into Iron(iii) chloride solution after sometime,
give a reason. ( 26Fe)
Answer:
See explanation
Explanation:
When left to stand, a solution of Iron II chloride is converted to Iron III chloride by oxidation in air.
The Iron III chloride is composed of weak field ligands in its coordination sphere. These weak field ligands mostly occur in a high spin configuration hence, the central iron atom can be converted from Fe[(H20)6]^2+ .2Cl^-(high spin d6) to Fe^3+[(H20)6]^3+ .3Cl^-(high spin d5).
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Answer is:
either A, or D
Explanation:
What type of element makes a positive
cation?
Answer:
The answer would be Metals.
Jordan places a hot spoon into a container of ice
cream. How does this help him scoop out the ice
cream?
Answer:
It melts some of the ice cream and it makes it easier for him to scoop the ice cream out
Explanation:
What is the sodium sulfide positive ion and negative ion?
Answer:
Poyo
Explanation:
. The compound containing both ionic and covalent bond is
A)AIBr3;
B) Cao
C) MgCl2
D) NH4cl
Explanation:
The compound with both ionic and covalent bonds is Ammonium chloride (NH4Cl).
Which of the following steps will slow down the reaction between coal and oxygen?
Answer:
decrease temperature of the oxygen
Explanation:
Answer: I believe it it decrease temp of oxygen
Explanation:
what is the wavelength of a 250Hz wave traveling station speed of 350 m/s
Explanation:
ok....m.m....... nm...m
Kelle & Jenn are at a pool. Kelle is standing on the high diving board while Jenn is standing on the low diving board. Assuming the difference in weight/mass is negligible, which of the following statements accurately describes this relationship?
A. Kelle has a greater potential energy than Jenn.
B. Jenn & Kelle have equal potential energies.
C. Jenn has a greater potential energy than Kelle.
D. Kelle has a greater kinetic energy than Jenn.
Answer:
A. Kelle has a greater potential energy than Jenn.
Explanation:
We need to apply the kinetic energy equation here to solve this problem: P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.
The problem tells us, however, that mass/weight is negligible; therefore, the only thing that really matters here is the height. Kelle is higher up, so she would have a greater potential energy than Jenn, who is lower.
What happens to the velocity of an object when balanced forces act on it?
a.
There will be no change
c.
There will be negative acceleration
b.
There will be positive acceleration
d.
Velocity will change, but not acceleration
Answer:
There will be negative acceleration.
Explanation:
I majored in Physics
Answer:
A. There will be no change
Explanation:
Velocity is defined as the directional speed of an object in motion. Balanced forces do not result in any change in motion. Thus, there would be no change in velocity.
19.5 g O2 is equal to how many moles of O2? _____moles O2
Explanation:
Molar mass of O2: 32g/mol
Moles of O2 = 19.5 / 32 = 0.609mol
can you guys please fact check me I don't wanna get a bad grade and please tell me if any are wrong 100 points and don't just take them
Answer:
1. the reaction rates can not decrease
2. correct!
3. correct!
4. decreasing the amount of reactants
5. correct!
Explanation:
good luck!
How many atoms of S are there in the reactants?
Sg + F2 ---> SFO
Answer:
One atom
Explanation:
If you could show work
We need to balance the equation
[tex]\sf \bullet\quad H_2 + O_2 \longrightarrow H_2O [/tex]
By adding 2 moles of [tex]\sf H_2 [/tex] on the both sides
[tex]\sf \bullet \quad 2H_2+O_2 \xrightarrow{\;By\:balancing\;} H_2O[/tex]
Hence, balanced !
what is a chemical change? and what is a physical change?
In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
A chemical change is a change where something new can be formed and normally can not be changed back. Examples of a chemical change are precipitates being formed, gases being formed, quick temperature change rust, bubbling, foaming, burning, etc. A physical change is a change where nothing new is formed and normally can be changed back. For example you painted a wooden block red. If you want, you can always change the color again. Nothing chemically or permanantly happened to it. More examples of a physical change are; color change, change of state, luster, shape, size, hardeness, etc.
:)
what kinds of bonds are found in a sample of H2O(s)?
Answer:
a covalent bond? is that what you mean?
Explanation:
what is th correct chemical symbol for nitrogen
Answer:
The correct symbol for Nitrogen is N.
Explanation:
I do A P E X.
what is the difference between saturated and unsaturated hydrocarbons
Answer:
Unlike saturated hydrocarbons in which all hydrogen atoms and carbon atoms are bonded together with single bonds, unsaturated hydrocarbons have double or even triple bonds between the carbon atoms.
A species of kangaroo has a diploid chromosome number of 16. After meiosis, to develop the kangaroo’s sperm or egg, the haploid number would be
. When fertilization occurs, the zygote would again have 16 chromosomes.
Answer:
Just to prove that the persons answer on top of mine is correct :D
Explanation:
Answer:
Explanation:
8
Please help me:(
Mr. Jacob is teaching his class about the various changes of Earth’s Surface over time. He wants his students to explain the evidence that supports the claim that fossils can show proof of the changing of Earth’s surface. Which of the following statements best explains how students can use fossils as evidence?
Question 4 options:
Plant fossils can be used as evidence of Earth’s surface changing because similar fossils found in various locations supports that Earth was once a supercontinent.
Plant fossils can be used as evidence of Earth’s surface changing because different fossils found in one specific location on earth supports that earth was once a supercontinent.
Animal fossils can be used as evidence of Earth’s surface changing because different fossils found in various locations supports that Earth was once a supercontinent.
Animal fossils can be used as evidence of Earth’s surface changing because similar fossils found in one specific location of earth supports that Earth was once a supercontinent.
Answer:
A
Explanation:
It may be harmful when people compete to see who can hold their breath the longest underwater. Without oxygen, brain cells *
Answer: Without oxygen, brain cells cannot make enough ATP.
Explanation:
Hypoxia is a condition that occurs due to low levels of oxygen. In conditions such as holding of breath for a long period of time, the oxygen carrying haemoglobin ( oxyhaemoglobin) breaks down, releasing oxygen to the body tissues, which constantly consumes oxygen keeping the levels low.
In the presence of decreased oxygen supply, autoregulatory mechanisms that control the blood flow to the brain by adjusting the diameter of the arterioles fails. The consequent rapid decrease in the cerebral blood supply leads to hypoxia and lack of glucose( decreased ATP production). If severe hypoxia is sustained for more than a few minutes, this could lead to irreversible brain damage.
Therefore, It may be harmful when people compete to see who can hold their breath the longest underwater.
Without oxygen, brain cells die as a result of the cells being unable to
metabolize glucose.
The brain is an important organ that controls almost all the activities that
takes place in the body. They have cells which converts the glucose to
energy which is needed for day to day activities.
When there is no oxygen, glucose isn't metabolized and energy is deficient.
The brain cells won't be able to function and then causes its cells to die
thereby resulting in brain damage.
Read more on https://brainly.com/question/20333433
Which type of cloud can sometimes be found in a layer other than the troposphere
Answer:
Cirrus
Explanation:
Cirrus clouds are found in the atmosphere
Please respond, will give brainliest to best answer! (multiple choice)
The ion with the smallest radius is
a. Br-
b. Cl-
c. I-
d. F-
e. O2-
Answer:
D. F-
Explanation:
Br - 185pm
Cl - 175pm
I - 198pm (I'm not sure what "I" is but I guess it is iodine)
F - 147pm
[tex]O_{2}[/tex] - 152pm
=> The ion with the smallest radius is F - 147pm
I need answers
Question 2 (2 points)
Which of the following is an example of BALANCED forces?
A ball rolling uphill
O A ball sitting motionless on the ground
O A ball bouncing on the ground
O A ball rolling downhill
Answer:
Concepts: Physical Forces
In order for an object to be balanced, then it must be in equilibrium which means that no additional forces are being exerted. A ball sitting motionless would result in a balanced force that exerts no additional forces.Please help me answer Question 1.
Answer:
9 moles of oxygen are produced from 6 moles of potassium chlorate.
Explanation:
Given data:
Number of moles of KClO₃ = 6 mol
Number of moles of oxygen produced = ?
Solution:
Chemical equation:
2KClO₃ → 2KCl + 3O₂
now we will compare the moles of KClO₃ and O₂.
KClO₃ : O₂
2 : 3
6 : 3/2×6 = 9
Thus, 9 moles of oxygen are produced from 6 moles of potassium chlorate.
A ground water tank has its height 2m. Calculate the pressure at its bottom when it is completely filled with water.
The pressure at the bottom : 19600 N/m²
Further explanationGiven
A ground water tank has its height 2m
Required
The pressure at its bottom
Solution
Hydrostatic pressure is the pressure caused by the weight of a liquid.
The weight of a liquid is affected by the force of gravity.
The hydrostatic pressure of a liquid can be formulated:
[tex]\large{\boxed{\bold {P_h ~ = ~ \rho.g.h}}[/tex]
Ph = hydrostatic pressure (N / m², Pa)
ρ = density of liquid (kg / m³)
g = acceleration due to gravity (m / s²)
h = height / depth of liquid surface (m)
ρ = density of water (kg / m³) = 1000
g = acceleration due to gravity = 9.8 m/ sec²
The pressure
[tex]\tt P=1000\times 9.8\times 2=19600~N/m^2[/tex]
Base your answer on the information below. Polonium-210 occurs naturally, but is scarce. Polonium-210 is primarily used in devices designed to eliminate static electricity in machinery. It is also used in brushes to remove dust from camera lenses. Polonium-210 can be created in the laboratory by bombarding bismuth-209 with neutrons to create bismuth-210. The bismuth-210 undergoes beta decay to produce polonium-210. Polonium-210 has a half-life of 138 days and undergoes alpha decay. Determine the total mass of an original 28.0-milligram sample of Po-210 that remains unchanged after 414 days. Show the math setup, the arrows, and your answer for full credit.
Answer:
3.5 milligram
Explanation:
From;
N/No = (1/2)^t/t1/2
Where;
N = amount of Po-210 that remains unchanged after 414 days
No = 28.0 milligram of Po-210 originally present
t = 414 days
t1/2 = half life of Po-210 = 138 days
Substituting values;
N/28 = (1/2)^414/138
N/28 = (1/2)^3
N/28 = 1/8
8N = 28
N = 28/8
N = 3.5 milligram