Answer: 15.7 liters
Explanation: reaction is 2H2 + O2. -> 2H2O
Because all substance still are gases, volumes in
STP conditions are proportional to amount of moles.
Amount of water is same as Hydrogen. Also volume is same.
During what phase of meiosis does the DNA coil into visible chromosomes?
O prophase
O anaphase
O metaphase 1
o telophase!
Answer:
prophase
During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes.
Answer:
prophase I
Explanation:
plants, Animals, Protists and Fungi all belong to which domain?
Answer:
Eukarya
Explanation:
Organisms in the domain Eukarya keep their genetic material in a nucleus and include the plants, animals, fungi, and protists.
How many seconds are in one year?
how many seconds are in 1 year
Answer:
Hey mate.....
Explanation:
This is ur answer....
31,536,000 seconds
drum roll, please… one year would equal 365 times 24 times 60 times 60 seconds…or 31,536,000 seconds! That's over 31 million seconds you have to spend over the next year....
Hope it helps u,
Mark me brainliest pls....
FOLLOW ME! :)
___Li + ___AlPO4 --> ___Al + ___Li3PO4
If 2.3 moles of Aluminum Phosphate are reacted, how many grams of Lithium Phosphate are produced?
Answer:
266.3 g
Explanation:
__Li + __AlPO₄ → __Al + __Li₃PO₄The balanced reaction is:
3Li + AlPO₄ → Al + Li₃PO₄First we convert 2.3 moles of AlPO₄ to moles of Li₃PO₄, using the stoichiometric coefficients:
2.3 mol AlPO₄ * [tex]\frac{1molLi_3PO_4}{1molAlPO_4}[/tex] = 2.3 mol Li₃PO₄Then we convert Li₃PO₄ moles into grams, using its molar mass:
2.3 mol Li₃PO₄ * 115.79 g/mol = 266.3 gPlease answer this for points
Which of the following has a boiling point which does not fit the general trend? a. SbH3 O b. HF O c. AsH3 O d. BIH3 O e. PH3
A compound is found to contain 29.67 % sulfur and 70.31 0/0 fluorine by mass. To answer the question , enter the elements in the order presented above. QUESTION 2: The molar mass for this compound is 10.81 g/mol The molecular formula for this compound is
A gas has a volume of 543 ml. at a temperature of 75.0°C. What volume will the gas occupy at 20.2°C?
Answer:
V₂ = 457.49 mL
Explanation:
Given that,
Initial volume, [tex]V_1=543\ mL[/tex]
Initial temperature, [tex]T_1=75^{\circ} C=75+273=348\ K[/tex]
Final temperature, [tex]T_2=20.2^{\circ} C=20.2+273=293.2\ K[/tex]
We need to find the final volume of the gas. The relation between the volume and the temperature of the gas is given by :
[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
Put the respected values,
[tex]V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{543\times 293.2}{348}\\\\V_2=457.49\ mL[/tex]
So, the final volume of the gas is equal to 457.49 mL.
Part 1: Fill in the blank
Newton’s Second Law: Unbalanced forces cause an object to ______.
Answer:
and can cause changes in motion. Inertia.
Explanation:
Answer: change its motion.
Explanation: hope this helps :)
5 points
1. In this food pyramid, how much energy is available as the energy is
passed from one trophic level to another?
Energy pytanid
O 1%
10%
оооо
25%
O 50
Answer:
I'm purty sure it's 10% Cause that is what my teach said.
Explanation:
Have a good day fern!!!!
How many moles are in 18.3 g of CO2?
Answer:
0.416moles
Explanation:
Using the formula;
number of moles = mass ÷ molar mass
Molar mass of CO2 = 12 + 16(2)
= 12 + 32
= 44g/mol
According to the information in this question, there are 18.3g of CO2
number of moles (n) = 18.3/44
= 0.4159
= 0.416moles of CO2
Is a process that involves One division. Of the nucleus and results in two identical cells 
Answer:
Mitosis is a single nuclear division that results in two nuclei, usually partitioned into two new cells. The nuclei resulting from a mitotic division are genetically identical to the original. They have the same number of sets of chromosomes: one in the case of haploid cells, and two in the case of diploid cells.
Explanation:
https://openoregon.pressbooks.pub/mhccbiology102/chapter/comparing-meiosis-and-mitosis/#:~:text=Mitosis%20is%20a%20single%20nuclear,the%20case%20of%20diploid%20cells.
What other elements does iron commonly bonds with.
☁️ Answer ☁️
annyeonghaseyo!
Your answer is:
it can bond with oxygen to form rust or iron oxide. and it can bond with carbon to form steel.
Here's another one: Iron bonds with lots of things: Oxygen (Ferric Oxide = rust),Chlorine (Ferric Chloride]), Fluorine, ... , even other Iron (in aMetallic Bond or crystal).
Hope it helps.
Have a nice day hyung/noona!~ ￣▽￣❤️
A chipmunk has a mass of 0.7 kg. What is its weight? (Acceleration due to gravity on Earth is 9.8 m/s2).
Answer:
W=ma
=0.7×9.8
=6.86N
....................
PLEASE GIVE BRAINLIEST
Calculate the number of moles of 67 point 2 dm3 of nitrogen gas at stp
Answer:
1 mol. = 0.169 mol He.
What happens to the number of valence electrons as you move from element 1 to element 18 on the periodic table?
A.
the number of valence electrons decreases then increases in a predictable sequence
B.
the number of valence electrons increases
C.
the number of valence electrons increases then decreases in a predictable sequence
D.
the number of valence electrons decreases
Answer:
B
Explanation:
the group number is=valence electrons. element 1 is in group 1 element 18 is in group 8. 1<8
Answer:
the answer is b
Explanation:
i just know
is corn syrup a compound?
Answer:
Yes
Explanation:
big brain
How many grams are in 4.56 moles of Mg(OH)2
Group of answer choices
a 266 g
b 0.00518 g
c 193 g
d 0.0782 g
If you have a balloon inside a car at noon during a hot summer day, the balloon molecules
inside will increase in pressure. (True/False)
Explain your answer.
Answer:
it decreases
Explanation:
because its false
Answer:
True
Explanation:
The pressure will increase because the heat will make the molecules move around and spread out more.
If you want I could go into more detail with the explanation.
Four students are carrying out different laboratory procedures.
-Piroja is mixing baking soda and vinegar
-Jason is heating water
-Kali is putting crushed ice and ice cubes on a table
-Francisco is separating iron filings.
Which experiment relies on convection?
A) Piroja
B) Jason
C) Kali
D) Francisco
THE CORRECT ANSWER IS B. JASON’S EXPERIMENT
#edge2021 unit test review 100%
Answer:
B: Jason's experiment
Explanation:
I did the Unit test review
Which statement is true about air temperature and humidity
Complete Question:
Which statement is true about air temperature and humidity?
Group of answer choices.
a. the air temperature does not affect how much moisture the air can hold
b. hotter air holds less moisture than colder air.
c. hot air and cold air share the same amount of moist.
d. colder air holds less moisture than hotter air.
Answer:
d. colder air holds less moisture than hotter air
Explanation:
Weather can be defined as the atmospheric conditions of a particular area over a short period of time.
The elements of weather include precipitation, wind, temperature, atmospheric pressure, relative humidity, cloud, and wind speed.
Temperature can be defined as a measure of the degree of coldness or hotness of a physical object (body).
On the other hand, humidity refers to the concentration (amount) of water vapor that is present in the air. It is high when there's a lot of water vapor in the air and low when the level of water vapor is small.
Hence, the true statement about air temperature and humidity is that colder air holds less moisture than hotter air because as the air cools, its molecules move closer together while the molecules move farther apart as the air become hot.
Additionally, at constant humidity, relative humidity is inversely proportional to temperature i.e as the temperature decreases, relative humidity increases.
Answer: colder air holds less moisture than hotter air
Explanation:
The Reaction
A+ B → C
was carried out in a constant-volume batch reactor where the following concentration measurements were recorded as a function of time:
t min 0 5 9 15 22 30 40 60
CA/mol/L 2 1.6 1.35 1.1 0.87 0.7 0.53 0.35
Required:
Determine the reactor order and the specific rate constant If you were to take more data, where would you place the points
Answer:
Explanation:
From the information given:
We can say that the rate of reaction is utilized to decide the reaction speed, and it is subject to the rate constant.
The power of concentration related to the rate equation can be said to be the order of the reaction.
For zero-order reaction: it is the reaction whose rate is free and not dependent on the reactant's concentration.
Concentration-time reaction is given as;
[tex]\mathbf{[A] = [A_o] -kt ---- (1)}[/tex]
where;
t = time
k = rate constant
A_o = initial concentration of reactant
Thus, the plot between [A] and t needs to be a straight line.
On the other hand, The First order reaction is the reaction whose rate is straightforwardly corresponding to the reactant's concentration.
Its concentration-time relation can be expressed as,
[tex]\mathbf{In([A])= In ([A_o])-kt ---- (2)}[/tex]
t = time
k = rate constant
[A_o] = initial concentration of the reactant
Then, the plot between [A] & t requires to be a straight line.
Presently, the plot between ln([A]) vs time appears to be in a straight line with the slope of the line equivalents to the rate constant (k).
hence,
slope = -k
Then;
[tex]\mathbf{k = -slope ---- (3)}[/tex]
Now; to discover the activation energy we need to utilize Arrhenius relation which is given as,
[tex]\mathbf{In(k) = In(K_o) - \dfrac{E_o}{RT} ---- (4)}[/tex]
From the above equation;
k_o = arrhenius parameter
Ea = activation energy
R = 8.314 J/mol.K
T = temperature in Kelvin
From the data given for concentration vs time;
t[min] Ca(mol/L)
0 2
5 1.6
9 1.35
15 1.1
22 0.87
30 0.7
40 0.53
60 0.35
a)
Since we can deduce the order of the reaction,
Let's assume that it is a zero-order reaction, Thus, the plot of Ca vs t can be seen in the first image attached below;
From the diagram, it is clear and obvious that it is NOT a straight line.
Thus, we conclude that this order is NOT a zero-order.
However, let also assume that order is first order,
Now, from the second diagram showing the plot of ln(Ca) vs t, we can deduce that it is a straight line which implies that it is the order of the reaction is first order.
Therefore, the equation for the first order is given as;
[tex]\mathbf{In([A]) = In ([A_o])- kt}[/tex]
Recall that: the slope of the ln(A) v/s time will result in a rate constant,
Thus, from the graph we have;
slope = -0.0289 mol/L.min and:
slope = - k
Hence;
rate constant = k = 0.0289 mol/L.min and the order = 1st order
b)
On the off chance that we need to take more data points, we will like to take the data point in the scope of 40 min to 60 min time interval, on the grounds that the significant deviation is seen there. more information focuses will imply more accuracy.
Which best illustrates the way in which radiation transfers thermal energy?
#edge2021
Answer:
it's b.
Explanation:
thank u so much for this. i appreciate it. lol.
Help on a science question from 6th grade
what are the particles of copper at rtp
Answer:
i think the answer is... A
Why was plastic first invented? How is plastic bad for the environment?
Answer: The first plastic based on a synthetic polymer was invented in 1907. Plastic sticks around in the environment for ages, threatening wildlife and spreading toxins.
How many moles are in a 12.0 g sample of NiC12
Answer:
0.17 moles
Explanation:
In the elements of the periodic table, the atomic mass = molar mass. Ex: Atomic mass of Carbon is 12.01 amu which means molar mass of Carbon is also 12.01g/mol.
In order to find the # of moles in a 12 g sample of NiC-12, we will need to multiply the number of each atom by its molar mass and then add the masses of both Nickel and C-12 found in the periodic table:
Molar Mass of Ni (Nickel): 58.69 g/molMolar Mass of C (Carbon): 12.01 g/molSince there's just one atom of both Carbon and Nickel, we just add up the masses to find the molar mass of the whole compound of NiC-12.
58.69 g/mol of Nickel + 12.01 g/mol of Carbon = 70.7 g/mol of NiC-12There's 12g of NiC-12, which is less than the molar mass of NiC-12, so the number of moles should be less than 1. In order to find the # of moles in NiC-12, we need to do some dimensional analysis:
12g NiC-12 (1 mol of NiC-12/70.7g NiC-12) = 0.17 mol of NiC-12The grams cancel, leaving us with moles of NiC-12, so the answer is 0.17 moles of NiC-12 in a 12 g sample.P.S. C-12 or C12 just means that the Carbon atom has an atomic mass of 12amu and a molar mass of 12g/mol, or just regular carbon.
(b) The sodium sulfate solution was made by dissolving 28.4g of sodium sulfate in
water to make 250 cm of solution.
Calculate the concentration of this solution in g dm?.
Give your answer to three significant figures.
Answer: The concentration of this solution is [tex]114g/dm^3[/tex]
Explanation:
Concentration of a solution is defined as the number of grams of solute dissolved per liter of the solution.
Given : mass of solute = 28.4 g
volume of solution = [tex]250cm^3=0.25dm^3[/tex] [tex]1cm^3=0.001dm^3[/tex]
[tex]Concentration=\frac{28.4g}{0.25dm^3}=114g/dm^3[/tex]
Thus the concentration of this solution is [tex]114g/dm^3[/tex]
By definition and change of units, the concentration of this solution is 113.6 [tex]\frac{grams}{dm^{3} }[/tex].
Chemical concentration determines the ratio of solute and solvent in a chemical solution and is defined as the ratio of the amount or volume of solute to the amount of solution. The more solute, the higher the concentration in a solution.
In this case, you know:
mass of solute= 28.4 g
volume of solution= 250 cm³= 0.25 dm³ (being 1 cm³= 0.001 dm³)
Then, the concentration can be calculated as:
[tex]concentration= \frac{28.4 grams}{0.25 dm^{3} }[/tex]
Concentration= 113.6 [tex]\frac{grams}{dm^{3} }[/tex]
Thus the concentration of this solution is 113.6 [tex]\frac{grams}{dm^{3} }[/tex].
Learn more about concentration:
https://brainly.com/question/14461548?referrer=searchResults
in the periodic table, helium is placed at?
a. top left corner
b. bottom right corner
c. bottom left corner
d. top right corner
Answer:
the answer is d
Explanation:
top right corner
Which of the following reaction types best matches "Na + Cl2 --> ..."?
A. Decompostion
B. Synthesis
C. Single Replacement
D. Double Replacement
Answer:
B
Explanation: