The imagine shows the atomic arrangements of four different substances.
Which are compounds and why?
Answers
Water-H2O
Carbon Dioxide-CO2
Methane-CH4
Related Questions
What is an example of diffusion?
Answers
Answer:
Perfume is sprayed in one part of a room, yet soon it diffuses so that you can smell it everywhere
Explanation:
A sample of a compound contains 60.0 g C and 5.05 g H. It’s molar mass is 78.12 g/mol. What is the compound’s molecular formula?
Answers
Answer:
C6H6
Explanation:
C : 60.0 g*1 mol/12 .01g = 5.00 mol
H: 5.05 g * 1 mol/1.01 g= 5.10 mol
C:H = 5.00 mol : 5.10 mol = 1:1
CH is an empirical formula
Molar mass (12.01 +1.01)=13.02 g/mol
78.12g/mol /13.02 g/mol =6
Molecular formula is the empirical that was taken 6 times (CH)6 = C6H6
Answer:
C. C6H6
Explanation:
For edge
What is an ellipse please help)
Answers
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
Explain why the change you made caused the stingwing population to decrease. Use energy storage molecules to explain your answer.
Answers
Answer:
Reprduce
Explanation:
The decrease in the stingwing population was caused by the change in energy storage molecules. Stingwings rely on energy storage molecules, such as glycogen and fats, to fuel their activities and survival. If the change disrupted their ability to store and utilize these molecules, their energy levels would decrease, leading to decreased population size.
The eye symbol represents Which hazards
Answers
Answer:
This one should be REALLY easy for everybody to know but the answer is anything that can pose a hazard to your eyes
Explanation:
Answer:cyclone
Explanation:
Please answer
Which describes sand?
fine-grained
retains water
water drains quickly
good for growing crops
-KUBAN
Answers
Answer:
c
Explanation:
Why can't a volume of water be compressed or expanded like a volume of air in a closed syringe system?
Answers
Answer:
It is all about pressure. When you plug upon the nozzle, there is no way for the pressure of the fluid to rise above a certain value, so pushing in is opposed by the fluid pushing back on your finger, it gets hard! However, if you open the valve and allow fluid to squeeze out, then the pressure can be relieved a bit and that allows you to keep the piston moving down. That is applying an unbalanced force that allows the fluid to accelerate from zero velocity inside the barrel to some higher velocity through the nozzle.
Explanation:
On this number line, zero represents sea level. Plot the following points based on the description provided by dragging and dropping the dots to the appropriate locations on the number line.
greatest common factor of 8 and 12
where does this go on the number line
Answers
On the number line
Which type of selection is shown in the graph above?
A. Disruptive selection
B. Stabilizing selection
C. Disaster Selection
D. Directional selection
Answers
In the given graph, the Evolved Population is showing disruptive selection. Hence, the correct option is A. Disruptive selection.
Stabilizing selection is a form of natural selection where individuals with average phenotypes are more likely to survive and reproduce their number. In this selection, the population tends to maintain a stable phenotype. As shown in the graph, the population is maximum for the population having a moderate length of neck.
Disruptive selection is a type of natural selection where extreme phenotypes are preferred over average phenotypes, leading to an increase in genetic variation and the population becoming more diverse. In this type of selection, the population diverges into two or more distinct phenotypic groups. As shown in the graph, two ranges of the population are favored for having traits for extreme lengths of the neck.
To learn more about Disruptive selection:
https://brainly.com/question/32192613
Look at the reaction below.
H2SO4(aq) + Mg(s)->MgSO4(aq) + H2(g)
Which substance is the acid in the reaction?
Mg(s)
H2(g)
MgSO4(aq)
H2SO4(aq)
Mark this and return
Answers
Answer:
H2SO4
Explanation:
H2SO4 is actually one of the strongest acids, coming to pH value very close to 1 . Acids transfer their hydrogen ions to other substances , such as water , and usually have hydrogen their formula . In this case , H2SO4 has hydrogen in its formula and is acid in the case .
Hope it helps you !!
Answer:
person above me is right :)
Explanation:
When vinegar and baking soda are mixed together, they experience a chemical change.
What evidence given would lead a person to think that the change is a chemical change?
the solution heats up or cools off
the solution changes shape
the solution changes size
Answers
The reason is temperature change.
chemical change could be a change of color or odor or formation of other things like gas or precipitate.
If you are leading a team to clean an oil spill in rough waters, which of the following methods would be most effective to clean the oil?
Install booms made from, or with, sorbent materials around the oil spill.
Install hard booms around the oil spill.
Coat the surface of the water with a sorbent material.
Wait until the water calms down and then install booms to contain the spill.
Answers
Answer:Install booms made from, or with, sorbent materials around the oil spill.
Explanation:Dispersants and booms and skimmers are the most frequently used methods to clean up ocean oil spills. All methods have advantages and disadvantages. The effectiveness depends on the situation – the amount and type of oil, the ocean currents and tides and the weather.
Explanation: Dispersants and booms and skimmers are the most frequently used methods to clean up ocean oil spills. All methods have advantages and disadvantages. The effectiveness depends on the situation - the amount and type of oil, the ocean currents and tides and the weather.
Why would an unstable radioactive isotope (nuclide) emit a beta particle (high energy electron)?
A)It has too many neutrons
B)It has too many protons
C)It has too many electrons
D)It has too few electrons
Answers
Answer:
A)It has too many neutrons
Explanation:
Electrons are emitted from the nucleus when a neutron is converted to a proton, an electron and a neutrino. This process is popularly known as beta emission. It reduces the neutron-proton ratio of a nuclide. The neutrino is a particle of zero mass and zero charge that carries off the excess energy and balances spins.
The loss of an electron from the nucleus occurs when there are too many neutrons in the nucleus. The process of beta emission usually reduces the number of neutrons in an atom thereby decreasing the neutron-proton ratio.
Write number then solution!!!!!!!!!!!
Answers
Answer:
1- waxing gibbous
2- third quarter
3- waxing crescent
4- full moon
5- waning crescent
6- new moon
7- first quarter
8- waning gibbous
Explanation:
hope that helps
Pain and suffering
Pain and suffering
Please help me por favor :'(
Answers
please help!
what is it called when cells come together from different organisms and create new life, different from themselves?
Answers
Answer:
Specialization?
Explanation:
Which label belongs in the area marked W?
Answers
Answer:
A) are called "true" bacteria
Make models of a plant and an animal cell. Include labels for each part of the cells. Use your models to describe how the plasma membrane contributes to how the cell functions as a whole. (its an experiment on placing eggs in tap water, salt water, sugar water, and syrup and measuring their before and after )
Answers
Answer:
Hope it helps
Explanation:
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
PLS RATE AS BRAINLIEST ANSWER
No links What lives in the Arctic tundra biome? Choose all that apply
Reptiles, amphibians,lots of insects, reindeer, caribou, muskox
Answers
Answer:
Muskox reindeer and caribou
why do horses and humans need different organisms varying the amounts of biting power?
Answers
Answer:86.58
Explanation: 86.58
what is the relationship between convince and suspect?
Answers
To convince someone means to persuade them to believe or do something. This involves gaining their trust and making them feel confident in your argument or proposal.
On the other hand, to suspect someone means to have doubts or distrust about their motives or actions. This involves questioning their credibility and being cautious about their intentions.
So, while convincing involves building trust and confidence, suspecting involves the opposite - doubting and being cautious.
Based on the rocks they contain, predict how Devils Tower and the Giant's Causeway formed. Explain your answer in terms of extrusive and intrusive rocks and the observations you made of both formations.
Answers
Answer:
What do you mean based on the rocks they contain? what rocks do they contain
Explanation:
Calculate the molar mass of carbon tetrafluoride (CF4) in grams per mole, rounding to proper significant figures, if mc= 12.01 u and mF = 19.00 u.
Answers
Answer:
molar mass of carbon tetrafluoride (CF4) is
(12.01 × 1 ) + ( 4 × 19.00)
= 12.01 + 76
= 88.01u
= 88u
Hope this helps
What is civic expression?
Answers
Answer:
Civic expression includes all the ways citizens share their opinions and show concern for their community. It can take the form of action, such as voting, but it can also be demonstrated through writing or spoken text. It is a critical part of American society.
Explanation:
what’s the mass of 0.0485 moles of Na2CO3
Answers
Answer:5.1g
Explanation:number of moles of Na2co3 is 0.0485 and it molar mass = 23×2+12+16×3=106
n=m/M
Therefore m= n×M
m= 0.0485×106
=5.141g
The mass of 0.0485 moles of Na2CO3 of 5.141 grams.
What is mass?Mass is defined as a dimensionless number used to describe the mass of a particle or item. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term. The strength of an object's gravitational pull to other bodies is also influenced by its mass. The kilogram serves as the SI's fundamental mass unit. Mass is a physical body's total amount of matter. Gravity and inertia, which are the two main forces influencing how objects move in space, make mass crucial.
Mass can be calculated as
Mass = molar mass x number of moles
Molar mass = 23 x 2 + 12 + 16 x 3
= 106 grams
Mass = 106 x 0.0485
= 5.141 grams
Thus, the mass of 0.0485 moles of Na2CO3 of 5.141 grams.
To learn more about mass, refer to the link below:
https://brainly.com/question/19694949
#SPJ2
Identify all the correct examples of weather
Answers
Answer:
Here are some correct examples of weather:
Sunny and warm weatherRainy and humid weatherFoggy and cool weatherSnowy and cold weatherWindy and stormy weatherHazy and hot weatherThunderstorms and lightningHurricanes and tornadoesClear and crisp weatherOvercast and dreary weather.
Explanation:
espero te ayude
How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)
a. The atom’s volume increases.
b. The atom’s mass increases.
c. The atom becomes positively charged.
d. The atom becomes negatively charged.
Answers
c. The atom becomes positively charged
if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom
Which components of a galaxy move in circular patterns or revolve around a star?
A . dust
B . Gas
C . Other orbiting object
D . sun
Answers
Answer:
C.
Explanation:
It's becase of the gavitational pull of a star or sun
47:16
How is energy related to the change of state represented
by the model?
O
O Atoms gain energy as a gas changes to a solid.
Atoms gain energy as a gas changes to a liquid.
Atoms lose energy as a gas changes to a solid.
O Atoms lose energy as a gas changes to a liquid.
8803
Answers
Answer:
Atoms gain energy as a gas changes to a liquid. Happy to help
Explanation:
In an experiment, the factor that we measure is called the A) independent variable B) conclusion C) controlled variable D) dependent variable
Answers
Answer:
Controlled variable?
Explanation:
I do know it is out of A C and D but even though it is in every science assessment I have i always fail to forget but I may be right but not fully sure last time I saw this the question was 4 weeks ago when I was really tired