Answer: B
Explanation:
It’s different part and functions keeping the cell alive. Hope I helped
Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide.
Which statement best describes these three components of air?
Oxygen, nitrogen, and carbon dioxide are all classified as pure substances.
Oxygen, nitrogen, and carbon dioxide cannot react with another substance.
Oxygen, nitrogen, and carbon dioxide are chemically bonded to one another.
Oxygen, nitrogen, and carbon dioxide can be classified as elements.
Answer:
they’re all pure substances. Carbon dioxide is not an element
Explanation:
What would happen if our intestines were not coiled (twisted) inside our body?
Answer:
If there is a change in the natural shape of the intestines, this can be known as a twisted bowel. A twist in the small intestine is referred to as a volvulus. Twists in the large intestine are known as a colonic volvulus. These abnormal twists or loops can cause an obstruction or other medical conditions which could be fatal. If signs of twisting bowel present, it is important to seek medical attention as quickly as possible.
Which of the following is an
example of a homogeneous
mixture?
A. fruit punch
B. a sandwich
C. a toolbox
Answer:
fruit punch
Explanation:
............
You decide to clean the bathroom. You notice that the shower is covered in a strange green slime. You decide to try to get rid of this slime by adding lemonade juice. You spray half of the shower with lemonade juice and spray the other half of the shower with water. After 3 days of spraying equal amounts 3 times a day, there is no change in the appearance of the green slime on either side of the shower. How many trials are being performed in this example?
Answer:
3
Explanation:
Convert -8.0 degrees F to
degrees C.
Answer:
Its -22.222C
Explanation:
I hope its helpful.
Answer:
-22.222
Explanation:
:)
Methane gas that comes out of a bunsen burner contains what type of energy?
A. Light energy
B. Heat/thermal energy
C. Chemical potential energy
D. Electrical energy
You have samples of the following metals of equal mass, which has the largest volume? Copper, density = 8.92 g/mL Mercury, density = 13.6 g/mL Gold, density = 19.3 g/mL Zinc, density = 7.15 g/mL
Answer: Zinc
Explanation: Zinc has the lowest density. Since density = mass/volume, we can also say volume = mass/density. Given the same masses, the metal with the lowest density would have the largest volume.
The sample is given. The sample which has the largest volume is Zinc, density = 7.15 g/mL.
What is volume?Volume is the space occupied by a three-dimensional object. It is the total space occupied by any object like water, a box, or gas. Volume can be calculated as mass/density.
[tex]\rm{Volume = \dfrac{mass}{density}}[/tex]
Given elements are Copper, density = 8.92 g/mL Mercury, density = 13.6 g/mL Gold, density = 19.3 g/mL Zinc, density = 7.15 g/mL
They all have similar mass, and different density is given; we have to find the volume.
If we take a similar mass, so the element with the lowest density will have the greatest volume, by the rule. We can see that zinc has the lowest density, which is 7.15 g/mL. So, the largest volume will have the Zinc.
Thus, the largest volume containing element is Zinc, density = 7.15 g/mL.
To learn more about volume, refer to the link:
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What is the phase change in which
a substance changes from a gas to
liquid?
a
Answer:
Usually the answer to this kind of question would be Condensation
Explanation:
You feel me my Guy...
Answer:
vaporization
Explanation:
example of electrovalent bond
Explanation:
MgCl2, CaCl2, MgO, Na2S, CaH2, AlF3, NaH, KH, K2O, KI, RbCl, NaBr, CaH2 etc.hope it helps.stay safe healthy and happy..Compound 2 contains 2.0g of hydrogen and 32.0g oxygen. What is the percent compound of each element?
Note down the formula below
[tex]\boxed{\sf Mass\%\;of\; element=\dfrac{Mass\:of\:the\: element}{Mass\;of\:the\: compound}\times 100}[/tex]
Mass of the compound
[tex]\\ \sf\longmapsto 32+2=34g[/tex]
Mass % of Hydrogen:-
[tex]\\ \sf\longmapsto \dfrac{2}{34}\times 100[/tex]
[tex]\\ \sf\longmapsto \dfrac{1}{17}\times 100[/tex]
[tex]\\ \sf\longmapsto 5.8\%[/tex]
Mass % of Oxygen:-
[tex]\\ \sf\longmapsto \dfrac{32}{34}\times 100[/tex]
[tex]\\ \sf\longmapsto \dfrac{16}{17}\times 100[/tex]
[tex]\\ \sf\longmapsto 94.2\%[/tex]
if an airplane travels a distance of 500km in 5 hours, what id the average speed?
Answer:
[tex]speed = \frac{distance}{time} \\ = \frac{500}{5} = 100 \frac{km}{hours} \\ thank \: you[/tex]
The properties of graphene are all of the following except this _______________.
a
high electrical conductivity
b
flexible
c
one layer of atoms thick
d
highly reactive
Answer:
I think it's a flexible
I hope it's helps you
Why is nucleus of an atom charged is negatively charged?
Answer:
Charge is caused by a flow of electrons, since electrons are around the nucleus they can be lost or gained by atoms. When an atom gets charged, it gains a charge, that is, it gains an electron. Since electrons are negatively charged, when an atom gains one, it also becomes negatively charged.
Which of the following correctly describes a compound? (4 points) a The atoms are bonded together, and the compound has different physical and chemical properties than the individual elements. b The atoms have no set ratio for how the atoms can combine, and they are not chemically bonded together. c The atoms can only combine in fixed ratios, and they retain their individual chemical and physical properties. d The atoms retain their individual chemical properties, and they can only be separated from each other by a chemical change.
Answer: A
Explanation: A compound is defined as two or more different elements bonded together in an ionic or covalent bonding arrangement. Any individual compound has a fixed ratio of it's elements. The elements do not retain their individual chemical properties.
if 3mol of carbon dioxide are used up in the photosynthesis reaction, what mass of glucose will be produced?
Answer:
90g of glucose produce
Help me with physical science
Answer:ok
Explanation:fish
2003 Q 2 Study the information in the table and answer the questions that follow lon Electronic Ionic arrangement radius Na 2.8 0.095 K K 2.8.8 0.133 Mg? 2.8 0.065 Explain why the ionic radius of K* is greater than that of Na*
Answer:
Hence
potassium (k) is 2,8,8,1
sodium (Na) is 2,8,1
potassium will have a higher Ionic radius than sodium
Explanation:
Ionic radius has a trend
it increases down the group
and decreases across the period
The respiration rate of a goldfish is measured. The goldfish is then placed in cold water and the respiration rate is measured again
Answer:
so the answer are Tyre and he'll to do
The observed mass of the sun is 6.270 * 10 ^ 26 g but the actual mass of sun is 5.97*10^ 24 kg . The percent error in measurement is 4,78 %
Answer:
False hoge iska answer
Explanation:
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Need help please
Which of the following physical changes shows a change in a substance’s state of matter?
A. A piece of paper being torn in half
B. Clay being molded into a bowl
C. An ice cube being crushed
D. Liquid water becoming steam
Answer:
c
Explanation:
because when you crush an ice it would break into peace's and the ice would not be a solid
A car travels 4 miles in 0.08 hours. The speed of the car is miles/hr.
A gas has a density of 5.56 g/L. What would the mass in kilograms of 1 m^3 of this gas
Answer:
Mass is 5560 grams
Explanation:
[tex]{ \boxed{mass = density \times volume}}[/tex]
Density is 5.56 g/L
Volume is 1 m³ = 1,000 L
Substitute the following to get mass:
[tex]mass = (5.56 \times 1000) \\ { \boxed{ \boxed{mass = 5560 \: grams}}}[/tex]
oops i dont think i meant to do this
Water is an important molecule for life on Earth to exist. Water is known to have unique properties like high heat of vaporization that helps moderate the temperature of the ecosystem. It also has high surface tension and high boiling point. In relation to our topic, what do you think is behind the molecules of water that makes these properties possible? Explain and support your answer.
Hydrogen bonding in water molecules are responsible for the unique properties of water.
Water is a molecule composed of hydrogen and oxygen atoms. Oxygen is highly electronegative. This leads to the introduction of polarity in the O-H bond in water. Hydrogen bonding occurs in a molecule when hydrogen is bonded to highly electronegative atom.
As a result of this polarity and consequent hydrogen bonding due to the hydrogen - oxygen bond, water molecules have several unique properties such as high heat of vaporization, high surface tension and high boiling point.
Learn more; https://brainly.com/question/10904296
1. What are they key characteristics scientists look for to figure of it something is real science or pseudoscience?
2. What are the five main steps in the scientific method?
3.What is a physical property?
4. What are the two types of physical properties?
Answer:
Among these warning signs are: A tendency to invoke ad hoc hypotheses, which can be thought of as “escape hatches” or loopholes, as a means of immunizing claims from falsification. An absence of self-correction and an accompanying intellectual stagnation. An emphasis on confirmation rather than refutation.oMake an observation.Ask a question.Form a hypothesis, or testable explanation.Make a prediction based on the hypothesis.Test the prediction.Iterate: use the results to make new hypotheses or predictions.3. A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance
4.extensive and intensive properties.
PLEASE MARK ME BRAINLIESTWhy is it impossible for an element to have an atomic number of 110.5?
a. atoms of an element have the same whole number of protons and neutrons
b. atoms of an element all have the same whole number of protons
c. exactly half of the isotopes would need an atomic number of 110 and half would need an atomic number of 111 which is very unlikely
d. atoms with atomic numbers greater than 100 are unstable
Answer: B
Explanation: The atomic number is based only on the number of protons in the nucleus of an atom. Since this is a count of whole numbers, it cannot be a decimal. It's either element 110 or 111, not 110.5.
Answer:
B
A
C
A
C
These should be the answers for your test. If you have any questions, please DM me
How many elements are in “C2H6O”
Answer:
Ethanol's chemical formula is C2H6O. This chemical formula can also be written as CH3CH2OH or C2H5OH. It is made of nine atoms that include two carbon (C) atoms, six hydrogen (H) atoms, and one oxygen (O) atom.
Explanation:
Answer:
three elements. carbon hydrogen and oxygen
guys please help i need to pass this!!
Answer:
Towards the center of the earth.
Explanation:
That is the gravitational pull for us on earth like we are pulled to the center of earth not the atmosphere high up in the sky hope this helps? I know you can pass this! You got it the fact that you got that far is proof.
Stars with a greater overall mass are and , and they consume their nuclear fuel .
Answer:
they will expand
Explanation:
as they bring out they become red giants then eventually white dwarfs or the scarier options a black hole
what discovery was a minor help in the development of the periodic table?
Answer:
In 1932 James Chadwick first discovered neutrons, and isotopes were identified
Explanation:
