Answer:
D:intercellular communication
Explanation:
Cellular respiration and meiosis have nothing to due with communication between cells. Intracellular communication is communication within the cell, leaving intercellular communication left as the correct answer.
What is a neutrons and a proton?
Answer:
Protons are a type of subatomic particle with a positive charge
Neutrons are a type of subatomic particle with no charge (they're neutral).
Describe the freedom of movement of particles as a substance changes states of matter from solid to liquid to gas.
Answer:
in a sold the particles are in a fixed position and can only vibrate on the spot but when it changes into a liquid the energy is used to weaken the bonds so there are weak forces of attraction between the particles, all particles are still touching each other but are now free to move around. Ina gas all the bonds are broken, the gas particles are free to move around anywhere and the more collisions there are, the more the pressure increases
A baseball thrown into the air will continue on its path until which force acts upon it?
A. friction
B. gravity
C. inertia
D mass
Answer:
gravitational force exerted by the Earth, acts upon the baseball which is thrown into the air.
A baseball thrown into the air will continue on its path until a gravitational force acts upon it.
What is gravitational force?The force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface.
When a ball is thrown up the motion of the ball is away from the earth and the gravitational force of the ball is towards the earth. So, the gravitational force of the ball is opposite to the direction of motion.
Hence, a baseball thrown into the air will continue on its path until a gravitational force acts upon it.
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Determine the energy in joules of a photon whose frequency is 3.75 x 1017 Hz.
Plz help my grade and life depend on it
Answer:
The energy of photon is 24.86×10⁻¹⁷ J
Explanation:
Given data:
Frequency of photon = 3.75×10¹⁷ Hz
Energy of photon = ?
Solution:
Formula:
E = hf
h = planck's constant = 6.63×10⁻³⁴ Js
Now we will put the values in formula.
E = 6.63×10⁻³⁴ Js × 3.75×10¹⁷ Hz
Hz = s⁻¹
E = 24.86×10⁻¹⁷ J
Thus, the energy of photon is 24.86×10⁻¹⁷ J
Silver is mainly recovered as a byproduct of the bulk mining of other metals such as copper, lead, zinc and gold. Where in the United States do you think silver recovery would happen?
Answer:
Explanation:
This question appear incomplete because of the absence of options. However, places where silver recovery would happen in the United States are states where huge mining of copper, lead, zinc or gold are been mined. Examples of such places include Arizona, California and Oregon; where copper (and some other metals in some cases like gold in Oregon) is heavily mined and silver is recovered as a byproduct.
Which area of the atom
contains the most mass, but
the least volume?
Answer:
It is nucleus.
Explanation:
As you see in pic in center you see protons and neutrons. And electrons are surrounding them.
The mass of proton and neutron us close together but electron has the less mass.
Mass and energy are conserved:
Question 3 options:
A)
only in physical changes.
B)
in chemical changes and physical changes.
C)
always in physical changes and sometimes in chemical changes.
D)
only in chemical changes.
Really need to get this test right so please help me answer this question.
Answer:
Mass
Explanation:
Answer:
strength
Explanation:
I will give brainliest and 76 points
Answer:
number 5 is the answer
Explanation:
Is this Ionic, Covalent, or Metallic? *
Answer:
Ionic
General Formulas and Concepts:
Chemistry - Compounds
Ionic Bonds - Forming between a metal and nonmetalCovalent Bonds - Forming between 2 nonmetalsMetallic Bonds - Forming between 2 metalsExplanation:
Step 1: Define
MgI₂ - Magnesium Iodide
Step 2: Identify
Mg is an Alkaline Earth Metal
I is a Halogen Gas
Step 3: Confirm
Mg will transfer its 2 electrons to 2 separate I's and will form an Ionic bond.
Please help ASAP
Calculate the acceleration of this object. Remember, acceleration = net force / mass
Question 4 options:
1.7 m/s2
17,000 m/s2
2.3 m/s2
2 m/s2
Answer:
Put the actual question in the comments and I’ll solve it.
Explanation:
What is the meaning of insoluble carbonate?
How many formula units are in 9.3 g of alumina (Al2O3)?
Answer in units of formula units.
Answer:
5.5 × 10²² formula units Al₂O₃
General Formulas and Concepts:
Chemistry - Stoichiometry
Reading a Periodic TableDimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:
Step 1: Define
9.3 g Al₂O₃
Step 2: Define conversions
Avogadro's Number
Molar Mass of Al - 26.98 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of Al₂O₃ - 2(26.98) + 3(16.00) = 101.96 g/mol
Step 3: Convert
[tex]9.3 \ g \ Al_2O_3(\frac{1 \ mol \ Al_2O_3}{101.96 \ g \ Al_2O_3} )(\frac{6.022 \cdot 10^{23} \ formula \ units \ Al_2O_3}{1 \ mol \ Al_2O_3} )[/tex] = 5.4928 × 10²² formula units Al₂O₃
Step 4: Check
We are given 2 sig figs. Follow sig fig rules.
5.4928 × 10²² formula units Al₂O₃ ≈ 5.5 × 10²² formula units Al₂O₃
Which of the following is an example of a heterogenous mixture? O soy souce O lemonade O honey O trail mix
Answer:
soysauce bro
Explanation:
Answer:
trail mix
Explanation:
a heterogeneous mixture is a mixture with non-uniform composition. two or more of the mixture's components must be separate for the mixture to be heterogeneous.
The fossil record of the ________________ is found on the most continents helping to give evidence to the super continent. Group of answer choices Glossopteris Mesosaurus Cynognathus Lystrosaurus
Answer:
Glossopteris, Mesosaurus, Cynognathus and Lystrosaurus
Explanation:
Alfred Wegener was a German researcher, meteorologist and geophysicist. He is well known for his continental drift theory that he put forward. He did immense research and study and found many evidences of fossils found in the continents that claimed that continents were joined together to form a giant continent or super continent.
These fossils includes the fossils of Glossopteris, Mesosaurus, Cynognathus and Lystrosaurus. The findings of these fossils in continents have shown that continents have to be once joined together to form a super continent as the extensive oceans which is between these huge land masses forms or acts as a barrier for the fossils to transfer.
Is it possible that material from this sedimentary rock could ever form igneous rock
Answer:
Yes
Explanation:
It can melt into liquid rock and form igneous rock.
Answer:
Yes, the sedimentary rock can change into igneous rock by undergoing melting and then solidifying.
Explanation:
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What number should be placed
in the blank in order for this
equation to follow the Law of
Conservation of Mass?
57g + ? ---→ 34g +10g 26g
Answer:
13g
Explanation:
34+10+26=70
70-57=13
13g would complete the equation
How many total oxygen atoms are in 2Ba(NO3)2
Answer:
6
Explanation:
what does the word Antibiotics mean?
Answer:
Antibiotics are medicines that help stop infections caused by bacteria. They do this by killing the bacteria or by keeping them from copying themselves or reproducing. The word antibiotic means “against life.” Any drug that kills germs in your body is technically an antibiotic. An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. They may either kill or inhibit the growth of bacteria. One of the main medicines for relieving ear pain is acetaminophen — such as Children's TYLENOL® or Infants' TYLENOL® — not antibiotics. As with any medicine, ask your doctor which pain reliver is right for your child.Antibiotics are not available without a prescription in the United States. You will need to talk to a doctor or nurse practitioner to get a prescription. You can do this in person, over the phone, or over video. Amoxicillin is used to treat certain infections caused by bacteria, such as pneumonia; bronchitis (infection of the airway tubes leading to the lungs); and infections of the ears, nose, throat, urinary tract, and skin. It is also used in combination with other medications to eliminate H. The scientists have named the molecule “halicin”, in honour of HAL, the spooky AI system from 2001: A Space Odyssey. One of the researchers has described the “amazing” molecule as “arguably one of the more powerful antibiotics that has been discovered”.
Explanation:
Which of the following is true about an atom of iron and an atom of copper?
They have different masses.
Both have the same properties.
They have an equal number of protons.
Both have different types of sub-atomic particles.
Answer:
They have different mass and Both have different types of sub-atomic partials
Explanation:
Answer:
D: They have different mass and Both have different types of sub-atomic partials
Explanation:
guys if you help me and I got a right I will Mark you BRAINLIEST >:DDDDDDDD
Answer:
d..i think..he found plant cells
Explanation:
Answer:
Its D
Explanation:
Describe an atom formed by covalent bonding
Answer:
Water atoms
Explanation:
It's a mix of hydrogen and oxygen linked with covalent bonds.
HElp AsAp ^^^^^^^^^z
Answer:
B & D
Explanation:
hey there,
< The answers you put are correct.
Products are the result. In this reaction, it would be PbCl2, Cl2, and H2O but H2O is not an answer choice so it would just be the other two. >
Hope this helped! Feel free to ask anything else.
1. Using what you know about the of molecules in a liquid, explain alcohol moves down a cooled thermometer.
2. The animation shows that the molecules spread out slightly when heated. Do you think the thermometer would work as well if the tube of red liquid were wider? Why or why not? Use evidence to support your answer.
Answer:
oss sees djjekejjddhiwiwjjxbuekes
Which statement correctly describes microscopes? Check all that apply.
Microscopes make small things appear larger.
Magnification makes something look smaller.
Hans and Zacharias Janssen created the first microscope.
A lens is a transparent material that helps show the details of things observed.
The first microscope was made of two tubes with lenses at the ends.
Answer:
A, C, and DExplanation:
Microscopes make small things appear larger.
Hans and Zacharias Janssen created the first microscope.
A lens is a transparent material that helps show the details of things observed.
Answer:
A C and D i got it right on edge
Explanation:
Which sample is a pure substance? zinc oxide sugar dissolved in water pond water soil
Answer:
Its (A) zinc oxide
Explanation:
just took the quiz
Among the given option, Zinc Oxide is a Pure substance.
What is Pure Substance ?A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen.
A pure substance does not have to be of a single element or compound.
Hence, Among the given option, Zinc Oxide is a Pure substance.
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which option is an element air, sodium chloride, oxygen,water
Answer:
oxygen
Explanation:
air is a way of saying oxygen but it isn't direct, sodium chloride is a combination of two different elements but isn't one element, and water is H2O but that isn't an element on the periodic table. The only real element that is on the periodic table is oxygen.
Answer:
oxygen
Explanation:
i took the test
When people run long distances, their muscles require increased amounts of oxygen. Which system is responsible for carrying this oxygen to the muscles?
When would a theory be modified?
A
when new observations are made with updated tools
B
when a celebrity says a theory is wrong
C
when scientists don’t like the existing theoretical model
D
when the existing theory is considered too negative or grim