Help me question 5 ASAP
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.
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!~ ￣▽￣❤️
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
what happens when a gas is heated in a closed metal container
Answer:
Hope this helps!!
Explanation:
Molecules of a gas move randomly. In a sealed container they exert a force when they collide with the container walls and this applies a pressure to the container. If the cylinders heat up enough, their pressure will increase and they will explode.
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....
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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.
How many Hg atoms are in 1.2mol Hg?
Plz tell me how you got it
Answer:
12
Explanation:
12
Which statements true about the total mass of the reactants during a chemical change? (5 points)
0
his destroyed during chemical reaction,
It is less than the total mass of the produce
It is equal to the total mass of the products,
is greater than the total mass of the products
What is the work when a gas expands from 0.666 L to 2.334 L against an external pressure of 2.07 atm?
Answer:
work = 3.45 Joules
Explanation:
Work from the 1st Law of Thermodynamics is PΔV in the equation of internal energy => ΔE = ΔH + PΔV.
Therefore, work = PΔV = 2.07atm·(2.334L - 0.666L) = 3.45 L·atm = 3.45 Joules
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
79.2 L of a gas are contained at STP. How many moles are present in the container?
Answer:
3.54 mol
Explanation:
When at STP (Pressure of 1 atm & T of 273.16 K), one mol of any given gas occupies 22.4 liters.
With the above information in mind we can calculate the number of moles, using the factor 22.4 L/mol:
79.2 L ÷ 22.4 L/mol = 3.54 mol
There are 3.54 moles of the gas present in the container.
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.
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.
Determine the mass in grams of 3.45 x 10^2 mol Co.
Answer:
molar mass CO = 28.01 g/mol
3.45 x 10^2 x 28.01 =9.66 x 10^3 g
mass Zn = 2.45 x 10^-2 x 65.39 g/mol=1.60 g => 1.60 x 10^0
Explanation:
mark me as brainlest
One mole of cobalt weighs 58.9 grams. Hence the mass in grams of 345 moles of cobalt is 20320.5 g.
What is cobalt?Cobalt is 27th element in periodic table. It is place in d- block of periodic table and is termed as transition metal. Transition metals sows variable oxidation states.
The atomic number of cobalt is 27. Thus, it contains 27 protons and 27 electrons. The mass number is 57. The mass of a given number of moles of an element can be calculated by multiplying its atomic mass by number of moles.
The atomic mass of cobalt = 58.9 g/mol
The mass of one mole of cobalt is 58.9 g/mol.
Thus, the mass of 345 moles of cobalt is calculated as follows:
mass of 345 moles of Co = 345 mol × 58.9 g/mol = 20320 g.
Therefore, the mass of cobalt in 345 moles is 20320 grams.
To find more on cobalt, refer here:
https://brainly.com/question/1549014
#SPJ2
When benzene is treated with I2 in the presence of CuCl2, iodination of the ring is achieved with modest yields. It is believed that CuCl2 interacts with I2 to generate I , which is an excellent electrophile. The aromatic ring then reacts with I in an electrophilic aromatic substitution reaction. Draw a mechanism for the reaction between benzene and I . For the mechanism, draw the curved arrows as needed. Include lone pairs and charges in your answer. Do not draw out any hydrogen explicitly in your products. Do not use abbreviations such as Me or Ph.
Iodination of benzene using I2 and CuCl2 yields iodobenzene.
What is iodination?Iodination is a reaction in which iodine is added to an aromatic ring. In the reaction just described, the iodine is believed to interact with cupric chloride to yield the I^+ electrophile which attacks the electron rich aromatic ring as shown.
The product is shown in the mechanism attached to this answer as the iodobenzene product is formed.
Learn more about electrophilic reaction:https://brainly.com/question/11059241
All living things are made up of tiny parts called…?
Answer:
atoms
Explanation:
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
To whoever loves science can you help me with this
Your agents have captured an alien and is trying to study them to end the alien threat. One of your scientists comes to
you with a request asking to capture another alien, because they want to test for method of reproduction and level of
GENETIC DIVERSITY
QUESTION: Based on what you have learned so far, explain why this information would be VERY, VERY important in
stopping the ALIEN THREAT?
Answer:
I think maybe it is just so that you can get a second answer that matches the first one maybe. not entirely shore though
Can someone please solve this????? It's true or false
Answer:
True true false true true true flase, false
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.
I HAVE 2 MINUTES PLS HELP :(
Answer:
C
Explanation:
I did it before
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
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.
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!!!!
is corn syrup a compound?
Answer:
Yes
Explanation:
big brain
Please answer this for points
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:
Help on a science question from 6th grade