Answer:
Explanation:
is it possible for a balloon with initial pressure of 200 spa to naturally expand ... a sample of argon gas is at pressure 124 kpa and a temp. of 24 degrees C in a ... calculate volume that 2.25 moles of oxygen gas will occupy at standard temp. and pressure ... explain how avg kinetic energy of helium atoms changes as the temp ...
What is the primary difference between two different isotopes?
Answer:
Because different isotopes have different numbers of neutrons, they do not all weigh the same or have the same mass. Different isotopes of the same element have the same atomic number. They have the same number of protons. The atomic number is decided by the number of protons.
Hope this helps!!!!
Explanation:
I NEED HELP FAST PLEASE
*please answer correctly*
Will mark brainliest thank you!!
Answer:
Explanation:
Using Charles Law ,
[tex]\frac{V1}{T1}=\frac{V2}{T2}[/tex]
Using this formula we have ,
V1= 200cm^3
T1=40+273.15 = 313.15 K
T2 = 100+273.15 = 373.15 k
V2= ?
Hence using above formula simplify it we will get ,
V2 = 238.3 cm^3
Answer:
i dont know that plzzz help me tooooo
Which of the following has the smallest atomic radius?
a B
b Al
c F
d N
e Ga
Answer:
c. F
Explanation:
As you go top to bottom down a column of the periodic table, atomic radius increases.
As you go left to right across a period of the periodic table, atomic radius decreases.
Knowing this trend, that means that the smallest atomic radius would be located in the top right of the periodic table. The closest element to that point is fluorine, or answer C.
I think it’s D but I’m not sure.. Please help!
Answer: I think it’s D?
Explanation:
Answer:
D.
Explanation:
Weathering, erosion and deposition are processes that can wear a mountain down.
______ meters = 177 millimeters
Answer:
117 millimeters = 0.117 meters
Explanation:
This is using unit conversions. There are 1000 millimeters in 1 meter, so you would divide your starting value, 117 millimeters by 1000 millimeters. The units will cancel because they are being divided by themselves and you are left with 0.117 meters.
What would the world be like without elements? please
Answer:
It would be nothing. Quite literally nothing. No Oxygen, no dirt, no anything.
Explanation:
Answer:
Nothing
Explanation:
Everything we have in our world is made up of elements. Without them, we would have nothing.
If a molecular formula is C8H12O2 , what is the empirical
formula?
a
C4H30
b C4H60
C С2H3o
C2H30
d C8H1202
How do the atomic number and the mass number of an element
change after beta decay?
A. Atomic number stays the
same; mass number
increases by 1.
C. Atomic number increases by
1; mass number stays the
same.
B. Atomic number stays the
same; mass number
decreases by 1.
D. Atomic number decreases by
1; mass number stays the
same.
Answer:
A.
Explanation:
If a section of DNA has 15% thymine, how much adenine will it have?
1. 15%
2. 30%
3. 60%
4.85%
Answer:
15% adenine
Explanation:
Thymine and adenine are a nitrogenous base pair so they would equal the same.
A bottle contains 158.1 grams of lead (II) sulfate (PbSO4), used for car batteries. How many moles does it contain?
Number of moles =0.52 moles
The number of moles is defined as the ratio between given mass and molar mass.
Given:
Mass of PbSO₄ = 158.1 grams
To find:
Number of moles=?
Molar mass of PbSO₄ = 303.26 g/mol
[tex]\text{Number of moles}= \frac{\text{Given mass}}{\text{Molar mass}}\\\\\text{Number of moles}= \frac{158.1}{303.26}\\\\ \text{Number of moles}= 0.52\text{ moles}[/tex]
Thus, the number of moles it contain will be 0.52.
Learn more:
brainly.com/question/21911991
Type the correct answer in the box. Spell all words correctly.
What is this process called?
*blank* involves subjecting the evidence and the reference or standard to the same tests. This process determines if two or more
objects share a common origin.
Can someone help me with number 3 thanks
Answer:
Difficult Question but I would say no
Explanation:
I say no because the whole premise of a chemical reaction is the reaction to new bonds and bond losses happening due to the introduction of a new substance. If the substance hasn't changed at all, it wouldn't be a chemical reaction because their would be nothing reacting.
Select some particular plant or animal and find out how it has been improved because of the study of genetics. The following examples are given, but you may select some other topic if you like. Be sure that you have the topic and the method (written or oral) of reporting approved before you do your research. If you choose an oral report, it should be at least 3 minutes in length. If you choose a written report it should be at least 500 words in length.
Answer:
Try going onto essaytyper.com
You write an invisible message on paper with lemon juice - when you heat the paper, the writing turns brown. Chemical or physical change
Answer: Chemical Change.
Explanation: Lemon juice has properties that, when heated, turn the paper brown. In the invisible ink science experiment, that is why it is used. In lemon juice, the acid prevents peeled fruit from browning, like apples and pears. The lemon juice has a bitter taste and is acidic.
What is specific gravity in minerals?
Specific gravity is the "heaviness" of a mineral. It is defined as a number that expresses the ratio between the weight of a mineral and the weight of an equal volume of water.
Answer:
The ratio of it's mass of an equal volume of water.
Explanation:
If a person weighs 125 pounds, 8 oz, how many mg do they weigh?
Answer:
ok so you would just weigh 125 because 16 oz is 1 pound
Explanation:
Match the number of neutrons to the correct isotope by studying the atomic number and mass number of each isotope. Drag the items on the left to the correct location on the right.
these are the correct answers
describe a difference in our inner planets and outer planets
Urgent please help!!!
Describe what you think is your responsibility in taking care of the natural
world in which you live.
Answer:
Well I would say " I think my responsibility is recycling, gardening, picking up litter, and using less pollution. All of this stuff is very important. Sometimes, it's the tiny things that change the world for the better."
I hope this helped! Feel free to add your own little tweaks.
Cuales son las Desventajas de la radioactividad en la industria?Ayudarme porfa no encuentro nada importante
Answer:
Ver explicacion
Explanation:
Una desventaja del uso de la industria de la energía nuclear es la posible exposición de los trabajadores a una dosis letal de radiación.
Este tipo de exposición es muy perjudicial para las personas.
En segundo lugar, el hecho de que la fuente de energía nuclear esté siempre encendida significa que debe ser atendida regularmente por personal competente.
Please help!! I'll name you brainliest!!
Answer:
lost is the answer to this question but if I am wrong I am so sorry for that
Organisms that are made up of prokaryotic cells are NOT ____________.
Question 4 options:
Bacteria
Simpler than organisms made up of Eukaryotic celled organisms
All of these are true about prokaryotic cells
Multicellular
Answer:
Multicellular
they are single celled
If I add a proton to an atom, which of the following will change? (select all that apply) a)the type of element b)The mass of the atom c)The charge of the atom d)The number of neutrons)
please help i will mark brainlist
Answer:
V= 21 cubic cm (( I am not sure about density ))
Explanation:
V= L×W×H
b. MgF2
Name the compound
Answer:
Magnesium Difluoride
Explanation:
Mg = magnesium
F = fluoride
F2 = difluoride (prefix "di" indicates 2)
What is the formula for nickel || dichromate
Answer: Cr2NiO7 is the molecular formula for nickel II dichromate.
Two people are playing tug of war. One person pulls to the right with 32 N of force. The other person pulls to the left with 37 N of force. How strong is the net force and in which direction?
Answer:
The net force is 5 N and to the left.
Explanation:
37 N - 32 N = 5 N and since there is a stronger pull from the rope moves towards the left so the direction of motion is left.
What is the chemical formula for Tetraphosphorous Pentachloride ?
Answer:
CH4
Explanation:
How would an apple, potato, and onion all taste the same?
Answer:
If you were to plug your nose, it would block out more than 80% of taste, causing all three items to have no taste- therefore making them taste the same.
Explanation:
CAN y’all please help me ASAP with these questions :)
Answer:
1. Force
2. contact force
3. non-contact force
4. magnetism
5. strength and direction
6. length, direction
7. newtons
Explanation:
You're welcome <3