Answers
Answer:
A - meiosis results in two genetically identical offspring cell
Explanation:
Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.
Answer:
The answer is C
Explanation:
I took the test on AP3X
Related Questions
A voltaic cell with a basic aqueous electrolyte is based on the oxidation of Cd(s) to Cd(OH)2(s) and the reduction of MnO4–(aq) to MnO2(s).
Answers
Answer:
See explanation
Explanation:
Oxidation half equation;
3Cd(s) + 6OH^-(aq) ------> 3Cd(OH)2(s) + 6e
Reduction half equation;
2MnO4^-(aq) + 8H^-(aq) + 6e --------> 2MnO2(s) + 4H2O(l)
Balanced reaction equation;
3Cd(s) + 6OH^-(aq) + 2MnO4^-(aq) + 8H^-(aq) ------> 3Cd(OH)2(s) + 2MnO2(s)
Number of electrons transferred = 6
Define orbit and orbital motion, and explain why orbital motion occurs.
Answers
Answer:
Orbital motion occurs whenever an object is moving forward and at the same time is pulled by gravity toward another object. ... The result is a circular or oval path called an orbit, in which one object keeps moving around the other. Because of the relatively great gravity of the sun, Earth orbits the sun
Which is a characteristic of a physical change?
a
The chemical bonds in the substance are unchanged.
b
The change cannot be seen.
c
The molecules all move at the same speed.
d
The substance has reacted with another substance.
Answers
what is the significance of the symbol and formula
Answers
Answer:
please give me brainlist and follow
Explanation:
Importance of symbols and Formulae :
Symbols and formulae of substance gives a lot of information like. Types of elements present in the compound. E.g. (H20 is made of two elements hydrogen and oxygen). Number of each kind of atoms in one molecule.
WILL GIVE BRANLIEST!! EASY BUT I WAS TO LAZY TO LEARN!! WILL FOREVER BE GREATFUL!!! WILL GIVE BRANLIEST!! EASY BUT I WAS TO LAZY TO LEARN!! WILL FOREVER BE GREATFUL!!!
8. How much of a 25ml, closed, container would 5g of gas fill?
A) 15 ml
B) 10 ml
C) 25 ml
D) 20 ml
12. What is the pressure of a gas if 8.04 mol occupies 31.8 L at 308 K?
A) 6.39 atm
B) 5 atm
C) 3 atm
D) 7 atm
Answers
Answer:
The gas will fill the entire 25 mL of the container. Hope this helps
Explanation:
Which two elements are most likely good conductors of
electricity?
A. C and P
B. Zn and N
C. Si and Ne
D. Ag and Au
Answers
Hey Friends Can Yall Help Me Show Ya Work And Don’t Comment No B.S Cause Yu Will Get Cursed Out
Answers
Which planet could support human life
Answers
Answer:
D
Explanation:
It states that D has oxygen, and is closer to the Sun.
Hope this helped, and please mark as Brianliest <3
Answer:
I am pretty sure it is B
Explanation:
The others would either burn u like a crispy chicken nugget or freeze you like a popsicle
What would be the mass, in grams, of 3.50 x 1025 molecules of chlorine?
Show your work
Answers
Answer:
2059.645g Cl
Explanation:
A mole of any element contains 6.022e23 molecules, so we will divide the given amount of molecules by 6.022e23.
3.5e25 / 6.022e23 = 5.81e1
5.81e1 = 58.1 mol Cl
Now that we have found the amount of moles of Chlorine, we will multiply the number of moles by the molar mass of Chlorine, which is 35.45g/mol.
35.45(58.1) = 2059.645g Cl
A gas sample at 40° C occupies a volume of 3.22 L. If the temperature is raised to 55°C, what will the volume be, assuming the pressure remains constant?
Answers
Answer:
3.374L
Explanation:
According to Charle's Law:
V1/T1=V2/T2 (At constant pressure and moles)
where V=Volume and T=Temperature.
The temperature must be in kelvin.
K=C°+273
T1=40+273=313K
T2=55+273=328K
By applying the formula, we get:
3.22/313=V2/328
V2=(3.22*328)/313
V2=3.374L
HCl (aq) + NaOH (aq) = NaCl (aq) + H2O (l)
What type of reaction is the above?
Answers
Answer:
Neutralization reaction
Explanation:
It is a reaction between an acid and a base
What is responsible for moving the water to the ground?
Answers
Answer:
Water applied to the surface of a relatively dry soil infiltrates quickly due to the affinity of the soil particles for water. As time passes and the soil becomes wet, the force of gravity becomes the dominant force causing water to move.
Explanation:
Answer:
Gravity
Explanation:
Water applied to the surface of a relatively dry soil infiltrates quickly due to the affinity of the soil particles for water. As time passes and the soil becomes wet, the force of gravity becomes the dominant force causing water to move.
what is a chemical equation
Answers
Answer:
"Symbolic representation of a chemical reaction in the form of symbols and formulae"
Answer:
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas.
Explanation:
Example- Zinc metal reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas. This equation is written as: Zn+H2SO4→ZnSO4+H2.
I need help I don’t really get what I have to do to get the answer
Answers
So, for question 2, we see the term “produces.” There is one substance that precedes that term—potassium chlorate, which would be our sole reactant. And there are two substances that follow that term—potassium chloride and oxygen gas, which would be our two products.
In question 3, we see the term “yields” preceded by ammonium nitrate—our sole reactant—and followed by nitrogen gas, oxygen gas, and water vapor—our three products.
Lastly, in question 4, we see the explicit term “produces.” Moreover, we are told directly that dinitrogen tetrahydride reacts with oxygen gas; it should be pretty clear that these two substances are our two reactants here. The substances that we are told are produced are nitrogen gas and water, which would be our two products.
maksud frasa integrasi nasional
Answers
Answer:
Adapun frasa INTEGRASI BANGSA atau INTEGRASI NASIONAL sendiri dimaknai dalam dua konteks yakni POLITIS dan ANTROPOLOGIS. Dalam konteks politis, Integrasi Nasional bermakna sebagai penyatuan berbagai macam kelompok sosial juga budaya ke dalam suatu kesatuan wilayah yang membentuk suatu identitas nasional.
Explanation:
what is motion of a force in kinetic energy
Answers
Answer:
Kinetic energy, form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.
Please Please Please Please Please Help Me (please answer this question completely and 1 will friend you and help you with your question.)
How do static charges interact, and how are they released?
Use the sentence starters provided to help you answer the scientific explanation.
Static charges interact by ___________________________.
Static charges are released when ___________________________.
My scientific explanation is:
Your answer should include at least 6 complete sentences to explain the claim, evidence and reasoning.
Be sure to check your grammar and spelling.
Answers
Answer:
Static electricity is a type of energy that is produced by friction.
Explanation:
Static electricity may be the result when there is an imbalance between the negative charges and the positive charges in the surroundings. They are non contact forces. They pull of push without actually touching the body. The charged particles interact by pulling or pushing the uncharged particles.
These charges are released when they come closer to some uncharged or other charged particles like the electrostatic charges. It is the charge build up in an area.
Which of the following is NOT a reason for the experimental volume of the flask to be incorrect?
The constant temperature water bath decreases the volume occupied by the gas.
The volume labeled on the flask is not an accurate measure of the total volume of the flask.
The HCl solution added to the flask decreases the volume occupied by gas.
The rubber stopper used to seal the flask decreases the volume occupied by the gas.
Answers
Answer:
2
Explanation:
i dont andesdant
The experimental volume of the flask is found to be incorrect as the volume labeled on the flask is not an accurate measure of the total volume of the flask as it will result in errors.
What are errors?
Errors in chemical analysis result when there is a difference between observed value and the true value.If the magnitude of errors is large , it results in decrease in accuracy, reproducibility, and precision.
There are three types of errors:1) random error 2) systematic error 3) human error.The cause of random errors are difficult to quantify while the human errors can be minimized by taking a range of readings to reduce the error.
Errors while measuring boiling point may be human errors while noting down the boiling temperature or instrumental or systematic error if there is a fault in the thermometer.
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What problems may global warming cause?
Answers
Answer:
Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few.
Explanation:
Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few.
Is riding the bus or riding a bike a quicker way to get to school?
Answers
how many more grams should be added
Answers
Answer:
50?
I think but not 100% sure if not lmk
9 moles of Ammonia (NH3) are added to 50 L of H2O at a temperature of 29°C. The vapor pressure of water alone is 29.96 mmHg at 29°C. What is the vapor pressure of the Ammonia solution?
Answers
Answer: The vapor pressure of the solution at [tex]29^0C[/tex] is 29.86 mm Hg
Explanation:
As the relative lowering of vapor pressure is directly proportional to the amount of dissolved solute.
The formula for relative lowering of vapor pressure will be,
[tex]\frac{p^o-p_s}{p^o}=i\times x_2[/tex]
where,
[tex]\frac{p^o-p_s}{p^o}[/tex]= relative lowering in vapor pressure
i = Van'T Hoff factor = 1 (for non electrolytes)
[tex]x_2[/tex] = mole fraction of solute
=[tex]\frac{\text {moles of solute}}{\text {total moles}}[/tex]
Given : 9 moles of [tex]NH_3[/tex] are dissolved in 50 L or 50000 ml of water
mass of water = [tex]density\times volume = 1g/ml\times 50000ml=50000g[/tex]
moles of solvent (water) = [tex]\frac{\text{Given mass}}{\text {Molar mass}}=\frac{50000g}{18g/mol}=2778moles[/tex]
Total moles = moles of solute + moles of solvent = 9 mol + 2778 mol = 2787
[tex]x_2[/tex] = mole fraction of solute
=[tex]\frac{9}{2787}=3.2\times 10^{-3}[/tex]
[tex]\frac{29.96-p_s}{29.96}=1\times 3.2\times 10^{-3}[/tex]
[tex]p_s=29.86mmHg[/tex]
Thus the vapor pressure of the solution at [tex]29^0C[/tex] is 29.86 mm Hg
How many molecules is 6.11 moles of Zn?
Answers
The answer is 0.015295197308045
We assume you are converting between moles Zinc and gram. You can view more details on each measurement unit: molecular weight of Zinc or grams The molecular formula for Zinc is Zn
Thallium-201 has a half-life 73 hours. If 4.0 mg of thallium-201 disintegrates over a period of 6.0 days and 2 hours, how many milligrams of thallium-201 will remain?
Answers
Answer:
[tex]\huge\boxed{\sf 1.0 \ mg}[/tex]
Explanation:
Half-life = 73 hours
Disintegration period = 6 days 2 hours = (6*24) hours + 2 hours
= 144 hours + 2 hours
= 146 hours
No. of Half lives = Disintegration period / Half-lifeNo. of Half lives = 146 hours / 73 hours
No. of Half lives = 2
Hence, there are 2 half lives passed in 6 days 2 hours.
Amount of thallium-201 left after first half-life:
= 4.0 mg / 2
= 2.0 mg
Amount of thallium-201 left after second half-life:
= 2.0 mg / 2
= 1.0 mg
Hence, the amount of thallium-201 left after 6.0 days and 2 hours is 1.0 mg.
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Can someone help with 10 a and b please
Answers
Answer:
for question a element A and B are isobars
for question b element C and D have the same atomic numbers.
Explanation:
element A and B are isobars because they have the same mass numbers but different atomic numbers. The different atomic numbers is as a result of the difference in proton number of each elements A and B. (A and B are two different elements). element C and D are isotopes of the same element because they have the same atomic numbers (same number of protons) but differ in number of neutrons resulting in the different number of mass numbers. (C and D are the same elements)What is the process of old crust sinking back into a mantle?
Answers
These diagrams show two atoms of fluorine and an atom of magnesium.
On the left, a purple circle labeled F is shown twice, both times surrounded by 2 concentric circles. The inner circle has 2 small green spheres. The outer circle has 7 small green spheres. On the right, a purple circle labeled M g surrounded by 3 concentric circles. The inner circle has 2 small green spheres. The middle circle has 8 small green spheres. The outer circle has 1 small green sphere.
Which shows the correct steps in the formation of an ionic bond between these atoms?
A magnesium atom accepts six electrons from the fluorine atoms → Each fluorine atom donates three of the electrons → The magnesium atom becomes a -2 ion → Each fluorine atom becomes a +1 ion
A magnesium atom donates two electrons to the fluorine atoms → Each fluorine atom accepts one of the electrons → The magnesium atom becomes a -2 ion → Each fluorine atom becomes a +1 ion
A magnesium atom accepts two electrons from the fluorine atoms → Each fluorine atom donates one of the electrons → The magnesium atom becomes a -2 ion → Each fluorine atom becomes a +1 ion
A magnesium atom donates two electrons to the fluorine atoms → Each fluorine atom accepts one of the electrons → The magnesium atom becomes a +2 ion → Each fluorine atom becomes a -1 ion
Answers
Answer: D
Explanation:
took test
Answer:
D
Explanation:
got it right
Au + FeSO4= ?????????
Answers
Answer:
what
Explanation:
A sample of helium gas with a volume of 27.0 mL at 759 mm Hg is compressed at a constant temperature until its volume is 11.4 mL. What will be the new pressure in the sample?
Answers
Answer:
1797.6 mmHgExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we're finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
We have
[tex]P_2 = \frac{27 \times 759}{11.4} = \frac{20493}{11.4} \\ = 1797.631....[/tex]
We have the final answer as
1797.6 mmHgHope this helps you
A student has two solid blocks that have different masses. The student knows that each block is composed of a pure substance, but she wants to know if the blocks are composed of the same pure substance. Which of these would best show that the blocks are composed of different substances?
A.
Both blocks can be scratched by a piece of glass.
B.
One block has a greater volume than the other block.
C.
Both blocks sink when placed in water.
D.
One block conducts electricity and the other does not.
Answers
Answer:
The answer is maybe B hope it helps
The substances which are made up of only one kind of particle and have a fixed or constant structure is defined as the pure substance. Here One block has a greater volume than the other block so that the blocks are composed of different substances. The correct option is B.
What is volume?The amount of space occupied by any three dimensional solid is known as the volume. These solids can be a cube, a cuboid, a cone, a cylinder or a sphere. It is simply how much space an object or substance takes up.
It is possible to have the volume without mass, such as an enclosed vacuum. The capacity of a container is not necessarily the same as its volume. It is the interior volume of a vessel. If you measure the exterior dimensions of the container, its volume is greater than its capacity.
Here the blocks are composed of different substances is indicated by the difference in the volume of the blocks.
Thus the correct option is B.
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