Answer:
idk
Explanation:
Predict which surface will melt ice faster. Wood or metal? Why?
Answer:
I believe wood wood melt it faster. Why, because of how compact it is. It would be warmer. Metal would be a cooler temperature.
Explanation:
Please Help ASAP! Will Mark Brainliest
Answer: 35. it is 100°C
36. there is 7 periods in the periodic table
37. A heterogeneous mixture consists of visibly different substances or phases. ... Solutions have particles which are the size of atoms or molecules - too small to be seen. Oil and water form a heterogeneous or cereal and milk also makes a heterogeneous. a example of solution mixture is salt and water or rubbing alcohol.
38. A two phase mixture is a mixture of two different substances. An example of a two phase mixture would be a soft drink. It is a liquid and a gas. To separate these two substances you could heat the liquid and then capture the carbon dioxide.
Explanation:
I hope this helps you out buddy stay safe
A student measures the sides of a cube with a ruler and finds that the length of each side is 2.70 cm what is the volume of the cube in centimeter cubed
Answer
V= 19.68cm^3
Explanation:
V=a^3
a=2.70cm
V=2.70cm^3
2.70^3= 19.68
V=19.68cm^3
Answer:
V= 19.68 cm^3
Explanation:
V= a^3
V= 2.70cm^3
V= 19.68cm^3
The compound acetaldehyde most likely contains the functional group shown below:
-C-
downwards equal sign
O
true or false.
True
Further explanationAldehydes are alkane-derived compounds containing the functional group (-CO-) located at the end of the parent carbon chain
The general structure is R-CHO with the molecular formula CnH2nO
Naming is generally the same as the alkane by replacing the suffix with -al
Acetaldehyde(ethanal) is an aldehyde which has 2 C atoms with formula
[tex]\boxed{\bold{C_2H_4O}}[/tex]
The bond between the C atom and the O atom is a double bond
So the C atom has a single bond with H and alkyl and double bonds with O
R - C - H
||
O
Draw arrows for all of the attractive and repulsive forces between the negatively charged electrons and positively charged protons in these atoms. Make sure your arrows clearly show the difference between attractive and repulsive forces. Note that the particles without a charge label are neutral.
Answer:
Attraction
(e-) ---> <--- (H+)
Repulsion:
<---(e-) (e-)-->
Neutral:
(e-) (Helium)
Explanation:
Accordingly to coulomb's law:
In the attraction, the hydrogen without an electron has a positive charge and needs to be fulfilled with a negative charge found in an eletron.
In the repulsion, both electrons has the same charge and repulse each other.
In the neutral case, the Helium is highly stable therefore the electron is not attracted.
Can someone please help me with this
Answer:
b Mass +1 charge 0
Explanation: protons are neutral, so neutrons do not have charge
Which two formulas represent compounds?
A. Ag
B. HCI
C. H2
D. NaCl
Answer:
it is A and BExplanation:
A and b are Sodium chloride and Hydrogen chloride which are both compounds.
Which is a characteristic of calcium?
A.It has two neutrons
B.It has two energy shells
C.It has two protons
D.It has two electrons in its outer energy shell
How do ions form?
Please
Which one is it First to answer (correct) gets brainlist
Answer:
D
Explanation:
A pie chart (or a circle chart) is a circular statistical graphic, which is divided into slices to illustrate numerical proportion. ... While it is named for its resemblance to a pie which has been sliced, there are variations on the way it can be presented
titsssss is the answerr mateeee
Mr. Stark thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Mr. Stark counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.
Identify the independent variable and dependent variable
Identify the control group and experimental group
Explanation:
taking a special juice independent variable
the number of stuck of paper dependent variable
the control group is group B
experimental group is Group A
for more information study on thougtco
Which of the following best describes a person doing science?
o A.
Dominick uses a computer to do his math homework.
O B. Lindsay measures the sizes of the craters on the Moon.
O C.
Isabel invents a new kind of doorknob.
o
D. Murray randomly predicts the result of a coin toss.
Answer:
B. Lindsay measures the sizes of the craters on the moon
Answer:
I think it's D but it's my (viewpoint)
What is the darkest layer of soil at the top of the photograph called?
A. Aggregate
B. Subsoil
C. Bedrock
D. Topsoil
Answer: D.)Topsoil
Explanation: Have agriculture
What is the correct chronological order of scientists contributing to the modern periodic table?
1. Lavoisier, Newlands, Moseley, Dobereiner, and Mendeleev
2. Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley
3. Moseley, Mendeleev, Newlands, Dobereiner, and Lavoisier
Answer:
the second one-Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley
Answer:
Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley
Explanation:
Edge 2021
Forensic psychiatry focuses on the relationship between human behavior and criminal justice.
O True
O False
what causes the greenhouse affect?
it’s actually environmental science
Which characteristic influences the polarity of these molecules?
(Molecules are; CCI4, NH3, CH4, H20, CO2) P.S WILL GIVE BRAINLIEST AND 5 STARS+ THANKYOU! :)
Answer: electronegativity,
Explanation:
How do you know which elements increases or which elements decreases on a Ionisation graph? Like how can you figure out that these elements will increase on the graph and which will decrease?
Explanation:
There is a trend in the periodic table.
I.E increases up the group and across the period. So you know that metals have less I.E compared to non-metals.
Gold atoms can be identified based on the number of which subatomic particles?
A.neutrons
B.electrons
C.nuclei
D.protons
Answer:
D.protons
Explanation:
Gold is a chemical element and it is the element 79 on the periodic table. Thus, it has an atomic number of 79. The chemical symbol for Gold is Au, it is chemically classified as a transition metal and as a solid at room temperature.
Generally, the chemical element Gold is known to be malleable, ductile and a good conductor of electricity and heat. Also, it is a non-toxic chemical element with a beautiful lustrous sheen.
Gold atoms can be identified based on the number of protons (79) because it represent its atomic number, which is what is used to differentiate an atom of an element from the atom of another chemical element.
Which statement describes the most common ways in which students and professional scientists communicate the
results of their scientific research?
O Students communicate results in oral reports to the class, and professional scientists communicate results in
written reports
Students communicate results in scientific journals, and professional scientists communicate results in laboratory
reports
Students communicate results in laboratory reports, and professional scientists communicate results in scientific
journals
Students communicate results through secondary sources, and professional scientists communicate results
through primary sources.
Answer:
Students communicate results in laboratory reports, and professional scientists communicate results in scientific journals.
Explanation:
This is the answer i just did it.
I hope this helps.
Answer:
Students communicate results in laboratory reports, and professional scientists communicate results in scientific journals.
Explanation:
brainliest please
What is the mass of 4.2 x 10^24 molecules of Ca(OH)2
what is the reason of the gas pressure.
Answer:
The rapid motion and collisions of molecules with the walls of the container causes pressure (force on a unit area). Pressure is proportional to the number of molecular collisions and the force of the collisions in a particular area. The more collisions of gas molecules with the walls, the higher the pressure
Were any scientific investigations conducted for proposing the theory? Was this theory tested or simply expected?
Answer: Yes
Explanation:
Scientific theory can be defined as the solutions to the problems of the queries related to natural phenomena or it is the explanation for different aspects of the natural world. It is done with repeated testing procedure. To prove the facts of the theory, repeated experimental tests, and observations are done. The theories are tested under the controlled conditions of the experimental set up.
On the basis of the above description, we can say that the scientific investigations are done in the form of experimentation trials before proposing a theory. The theory is tested and is not simply expected.
Answer: Yes, Clements compared ecological succession with the development of organisms. Yes, this theory was tested.
Explanation:
How many Protons, electrons, and neutrons are in Dysprosium?
EASY POINTS?
Answer:
Number of Protons - 66
Number of Neutrons - 97
Number of Electrons - 66
Explanation:
You're welcome :3
what is the equivalent volume occupied by three millimeters of water?
3 kg
3 cg
3 cubic cm
3 cm
also I apologize I am very stupid
Answer:
three cubic centimeters
Explanation:
Find the volume of a gold ring that has a mass of 12.00 grams. The density of gold is 19.30 g/mL. The volume is
Answer:
The answer is 0.622 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\ [/tex]
From the question
mass = 12 g
density = 19.30 g/mL
We have
[tex]volume = \frac{12}{19.30} \\ = 0.62176165...[/tex]
We have the final answer as
0.622 mLHope this helps you
Which family does this element belong to? It sa reddish brown liquid with
an amber vapor, It is very reactive and it has a pungent odor that is
irritating to the skin, eyes, and respiratory
Alkali Metals
Alkaline Earth Metals
Halogens
Noble gases
Answer:
The correct answer is - halogen.
Explanation:
The physical properties of the given elements are identical to the physical properties of the free bromine which is a reddish-brown liquid that has a pungent odor and highly reactive. It has an appreciable amber vapor at 25 degrees (room temperature).
Bromine is a halogen and like other halogens, it is also present in the diatomic molecule and located in the 17th group or VII A group of periodic tables. Exposure of the bromine causes irritation to the eyes, skin and respiratory system.
Why do space objects fall to earth
Answer:
gravity
Explanation:
hope this belps
The space objects fall to earth because of the gravitational force of the earth. Earth pulls all objects towards itself by gravity.
What is gravity?Every object and person in their respective locations can be attributed to the force of gravity. It lends an object weight. Everyone will be floating in the air if there is no gravity.
Differing locations experience different levels of gravity. Similar to the earth, there is a strong gravitational pull. There is the less gravitational pull on the moon. In mars, there is less gravitation force than on earth.
The gravitational force pulls all objects towards itself, that is why if an object from space falls, it falls towards the earth. The gravitational force is very high on Earth.
Thus, due to gravity on earth, all space objects fall to earth.
To learn more about gravity, refer to the below link:
https://brainly.com/question/12054584
#SPJ2
A student is participating in the school science fair. She wants to investigate household cleaners.
Which question can she best answer through scientific investigation?
A. Which household cleaner is most effective at removing stains?
B. Which household cleaner smells the best?
C. How often should a person use household cleaners?
D. Where should a person buy household cleaners?
Answer:
A
Explanation:
NEED HELP HURRY!
Select the correct answer.
Which item is made from a synthetic material?
OA
cotton pants
B.
leather jacket
O C.
tissue paper
D.
wicker basket
Answer:
B: Leather Jacket
Explanation: I hope that this helped :)
