Pl help if your gonna awser for point pl put I don’t know if you give me the awsers I will give you Brainly
Answers
Because i just did it
answer c
Related Questions
Which of the following has the larger atomic radius?
O Cs
O Ca
O Li
O Ba
Answers
Hope it helps
Could a person at the South Pole see the North Star? Explain.
Answers
Answer:
Yes
Explanation:
Because yes
Answer:
Yes, North is a direction and the south pole is a place so yes you can see the north star from the south pole
Explanation:
How many moles of water could you make with 0.5 mol of H2?
Answers
Answer:
0.5 mols of water
Explanation:
QUESTION 10
Which of the following is not a characteristic of ionic compounds?
A. Contains metals and non metals
B. Ions form a crystal structure
C. Conducts electricity in the solid state
D. High melting point
Answers
Answer: C. Conducts electricity in the solid state
Explanation:
The following image shows the Atomic level of an element. In the image, which of
the following processes is NOT taking place as the element becomes stable. *
152 25+ 2p 35
152252 2p on ~ (Nel
le-
Na
+
Nat"
Tose
Iyolence election
8 valence electrons
O The loss of an electron Anveils an octet at the 2nd energy level to make it stable
The loss of an electron allows the element to take on a noble gas electron
configuration
Na is sodium is a metal and loses 1 e-
O The cation will use a type Ii naming system
O Na is neutral, loses 1 e- and then becomes a positive charged ion Na+
Answers
Answer:
D. The cation will use a type II naming system
Explanation:
As the element becomes stable, Option D is NOT taking place. That means that as the element becomes stable, the cation will NOT use a type II naming system. This is because in Type II binary compounds, the metal is not found in either Group 1 or Group 2 on the periodic table. It is as a result of this that the cation will not use a type II naming system.
Group 1 and Group 2 elements make use of type I naming system because in Type I binary compounds, the metal is present.
Option D is the correct answer.
What is an example for "chemical equations"?
Answers
Answer:
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
Explanation:
What is the percentage composition of each element in carbon dioxide, CO2? Remember percent composition is based on mass. (Show your calculations for full credit.)
Answers
%C = 27.3%
%O=72.7%
Further explanationProust states the Comparative Law that compounds are formed from elements with the same Mass Comparison, so that compounds have a fixed composition of elements
The empirical formula is the mole ratio of compounds forming elements.
MW CO₂ : 44 g/mol
Ar C = 12 g/mol
Ar O = 16
%C[tex]\tt \dfrac{12}{44}\times 100\%=27.3\%[/tex]
%O[tex]\tt \dfrac{2.16}{44}\times 100\%=72.7\%[/tex]
Matching: Which is involved in making energy for the cell?
A. cell membrane
B. nucleus
C. endoplasmic reticulum
D. mitochondria
E. cell wall
F. ribosomes
A.
B.
C.
D.
E.
F.
Answers
Answer:
D. Mitochondria
Explanation:
This is the one that makes the energy that powers the cell, aka, the powerhouse.
A radioactive substance has a half life of 2.5 days. How much of 25.0 z is left after 10 days?
Answers
1.563 g
Further explanationGiven
A half life of 2.5 days ⇒ t1/2 = 2.5 days
initial sample ⇒ 25 g
duration of decay ⇒ 10 days
Required
sample left after 10 days
Analysis
Use decay Formula :
[tex]\tt Nt=No.\dfrac{1}{2}^{T/t1/2}[/tex]
Solution
[tex]\tt Nt=25.\dfrac{1}{2}^{10/2.5}\\\\Nt=25.\dfrac{1}{2}^4\\\\Nt=\boxed{\bold{1.563~g}}[/tex]
Paraphrase
Substance left after 10 days = 1.563 g
What is the name of the following chemical compound?
Answers
Answer:
Lead(IV) iodide
Explanation:
Answer:
Plasmid #50548
Explanation:
may we met again !
i love you,ella
Answers
Answer: When I see you again!
Explanation:
I need to someone to explain the whole being of Chemistry. I do not understand a single thing, nothing makes sense to me. Literally, I'm going to fail this class because I do NOT understand a single thing taught to me. Maybe it's because I was mistakenly put into Chemistry Pre AP instead of on level but it's so hard and- I just do not get it.
Answers
Answer:
Explanation:
In Pre-AP Chemistry, the development of models to explain their macroscopic observations is a primary means through which students develop an understanding of the molecular world.
You will be forced to think and apply concepts to new situations, and even derive your own theories from application. This is excellent preparation for the higher levels of thinking required in college.
Chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.
Someone please help will mark as brainliest please answer all of the questions
Answers
Answer:
1.The main difference between SPECT and PET scans is the type of radiotracers used. While SPECT scans measure gamma rays, the decay of the radiotracers used with PET scans produce small particles called positrons. ... These react with electrons in the body and when these two particles combine they annihilate each other.
2 .A single photon emission computed tomography (SPECT) scan is an imaging test that shows how blood flows to tissues and organs. It may be used to help diagnose seizures, stroke, stress fractures, infections, and tumors in the spine.
3.Uses for PET scan include checking brain function; diagnosing cancer, heart problems, and brain disorders; examining blood flow to the heart; and determining spread of cancer and response to therapy. The use of PET scans may help doctors more accurately detect the presence and location of cancer cells.
4.Stress-only SPECT protocols resulting in lower dosimetry and less time in the imaging laboratory may be appropriate for many patients. PET perfusion imaging offers indisputably better images that are characterized by higher resolution, better attenuation correction, less scatter, and better contrast
Hope I wasn't too late.
What is it called when it erupts onto Earth's surface?
Answers
Answer:
Magma
Explanation:
If you’re talking about what erupts from a volcano then lava but the lava turns into magma when it hardens
Answer:
Lava
Explanation:
When magma erupts from the volcano it becomes lava
What do radio waves and microwaves have in common?
O Both have shorter wavelengths than visible light
O Both are at the side of the spectrum that has the highest frequency
O Both have lower frequencies than visible light
O Both have radiant energy than visible light.
Answers
Answer:
The last one
Explanation:
A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have?
13
5
9
4
Answers
Answer:
It has 5 neutrons
Explanation:
The fact that it is a neutral atom tells us that the number of electrons and protons is the same:
The problem tells us there are 4 electrons, thus there are 4 protons.The average mass of an atom is the sum of the number of protons and the number of neutrons:
Mass = # Protons + # NeutronsWith the above information in mind we can calculate the number of neutrons:
9 amu = 4 Protons + # Neutrons# Neurons = 5 NeutronsI dont have heat i have
elecromagnetic,
gravitacianal,
nucler and mechanical which one is it
Answers
Answer:
Your answer would be mechanical.
Explanation:
Hope you do good BRAINLYISETTT
Which of the following would cause the seasons on Earth to change more gradually?
A Increasing the amount of time it takes Earth to orbit the Sun.
B Increasing the number of times Earth rotates on its axis per year.
C Decreasing the speed of the Moon’s orbit around Earth.
D Decreasing the amount of energy the Sun emits per year.
Answers
Answer: The four seasons happen because of the tilt of the Earth's axis. At different times of the year, the sun's rays hit different parts of the globe more directly. The angle of the Earth's axis tilts the Northern Hemisphere towards the sun during the summer.
Explanation: I am not gonna tell u what exactly to pick but this should give an idea okai? Hope I can help u :)
Answer:
so whats the answer?
Explanation:
calculate the energy required to vaporize a chunk of ice at -25°C with the mass of 12.5kg
Answers
Explanation
Im not for sure if that’s correct so sorry if I get it wrong
What is the formula to the covalent molecule Hexaboron Diphosphide?
Answers
Answer:Naming Covalent compounds
A B
hexaboron silicide B6Si
chlorine dioxide ClO2
hydrogen iodide HI
iodine pentafluoride IF5
Explanation:
URENT URENT URENT HELP PLEASE
Answers
Answer:
its D.
Explanation:
What is sodium oxide when it’s broken down into its elements?
Answers
Answer:
Explanation:Typically, manufactured glass contains around 15% sodium oxide, 70% silica (silicon dioxide) and 9% lime (calcium oxide). The sodium carbonate "soda" serves as a flux to lower the temperature at which the silica mixture melts
What separates the inner planets from the outer planets in our solar system?
()Comet Belt
()Asteroid Belt
()Their differences
()Distance
Help plss!!
Answers
Answer:
the answer is B Astroid Belt
Make
a claim about why cells need ribosomes.
Summarize evidence to support the claim
and explain your reasoning.
ls?
Answers
Which measurement is a vector?
Answers
why is a rise in sea level significant?
Answers
Answer:
I honestly dont know but its cool problably from water fill or from the waves going to much
Explanation:
With all his gear, Neil Armstrong weighed 360 pounds on Earth. When he landed on the Moon, he weighed 60 pounds. Why?
Answers
Develop a relationship (in the form of a single sentence or equation) that can predict the charge based on the number and types of particle.
Answers
Answer:
The charge of an atom is determined by the ratio of protons to electrons
Explanation:
I hope this helps!!
A relationship showing the charge on an atom can be expressed as ;
Types of particle are protons and electrons Charge on atom = ( Number of protons - Number of electrons )The charge an atom posses depends on the particles/components of the atom which are protons and electrons. The protons are positively charged ions that are present in the nucleus of an atom while electrons are negatively charge ions present in the outer shell of an atom.
To predict the charge on an atom we will determine the difference between the number of protons and the number of electrons present in an atom.
Hence we can conclude that the relationship can be expressed as Types of particle are protons and electrons , Charge on atom = ( Number of protons - Number of electrons )
Learn more : https://brainly.com/question/5686932
Which of the following is not a clue that a chemical reaction has taken place? *
4 points
A solid is formed when two clear solutions are mixed.
A clear solution is added to a red solution, and the result is a blue solution.
A solid is added to water and bubbles form.
A pure solid is heated and turns into a pure liquid.
Answers
Answer:
A pure solid is heated and turns into a pure liquid.
Explanation:
No colour change recorded, only change of state, hence this is a physical change - physical changes I.e. change of state and temperature are not chemical reactions.
if you had 15 moles of Oxygen (O2), how many moles of water (H2O) would you be able to make?
Answers
Answer:
30 moles of water will produced.
Explanation:
Given data:
Number of moles of O₂ react = 15 mol
Number of moles of water formed = ?
Solution:
Chemical equation:
2H₂ + O₂ → 2H₂O
Now we will compare the moles of water with oxygen.
O₂ : H₂O
1 : 2
15 : 2×15 = 30 mol
30 moles of water will produced.