Answers
I think hopefully
Answer:
Class M
Explanation:
Related Questions
Describe the structure or shape of DNA
Answers
Answer:
a double helix structure
Explanation:
a two-stranded molecule that appears twisted, giving it a unique shape referred to most commonly as the double helix structure
What is the molarity of a solution that
contains 20.0 g of KOH dissolved in 1.25
L?
Answers
Answer:
0.40m
Explanation:
How many particles are in 3.4 moles of HCl?
Answers
Answer:
The volume is 77 L.
Explanation:
where P is pressure, V is volume, n is moles, R is the gas constant, and T is temperature in Kelvins.
The current STP temperature is 0∘C or 273.15 K (used for gas laws), and the pressure is 105Pa, which most people write as 100 kPa (both pressures are equal).
Which phrase defines altitude?
how tightly molecules are packed
a column of air pushing on an area
the force pushing on an area or a surface
the height of a given point above sea level
Answers
The term used to describe the Moon phases as the light spreads across the surface of the moon or grows.
Answers
Answer:
Explanation:
New moon
Waxing crescent moon
First quarter moon
Waxing gibbous moon
Full moon
Waning gibbous moon
Last quarter moon
Waning crescent moon
Answer: Waxing
Explanation: Waxing means is getting lighter.
Waning means its getting darker.
Why do we perform an experiment?
Answers
Answer:
Experiment plays many roles in science. One of its important roles is to test theories and to provide the basis for scientific knowledge. It can also call for a new theory, either by showing that an accepted theory is incorrect, or by exhibiting a new phenomenon that is in need of explanation.
Explanation:
Answer:
Explanation:
One of its important roles is to test theories and to provide the basis for scientific knowledge that we need to know. How are we supposed to know the answer to our question if we don't perform the experiment to test our question.
what is the orbital diagram for manganese?
Answers
Explanation:
Oxidation States. +2,3,4,6,7
Electrons Per Shell 2 8 15
Electron Configuration [Ar] 4s2 3d5
1s2 2s2 2p6 3s2 3p6 4s2 3d5
NaOH + HF --> NaF + H2O If you are given 3 moles of HF at the beginning of the reaction, how many moles of NaF will be produced?
Answers
Answer:
NaOH+HF-------NaF+H2O
1 mole Of HF=1mole of NaF
3mole HF= X
X=3mole of NaF
Can someone answer this asap!! All I know is 188g is incorrect!
Answers
Answer:
db gb bg
Explanation:
the metallic compound reduced to the metal by electrolysis is _____
please girls answer, because I think u r always right.
Answers
Answer:
Magnesium oxide
Explanation:
When magnesium reacts with oxygen, the magnesium atoms donate electrons to O2 molecules and thereby reduce the oxygen. Magnesium therefore acts as a reducing agent in this reaction. The O2 molecules, on the other hand, gain electrons from magnesium atoms and thereby oxidize the magnesium.
(Element or Compound)
C2H30
Answers
Answer:
Compound
Explanation:
An element is just like Carbon by itself but when theres more than one element it is a compound.
Answer:
C2H3O is a compound as it is formed when three elementscarbon, hydrogen, oxygen) react together
what is the most important part of an Atom? Why?
Answers
Answer:
I would say proton and electron are the two most important subatomic particles in an atom
Explanation:
The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.
Answer:
I would say proton and electron are the two most important subatomic particles in an atom. The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.
Explanation:
HELP PLEASE | 15 POINTS Determine the number of valence electrons in each diagram shown below.
Answers
answer:
Cl = 7 valence electrons
Mg = 2 valence electrons
explanation:
in order to determine the valence electrons, just look at the outermost shell or the last shell. whatever number of electrons it has will be the number of valence electron
6. How many molecules are in 2.7 moles of carbon dioxide
Answers
Answer:
2.7×6.022×10^23
=16.594×10^23 moleclules
Explanation:
number of mol= 2.7
1 mol of any element=6.022×10^23
therefote 2.7 mol =2.7×6.022×10^23
=16.594×10^23
So, saying you have a mole of iron atoms is like saying you have 6.022 • 10 to the 23 power iron atoms
There for you have 1.63 • 10 to the 24 power
How many moles of Mg3(PO4)2 are in 350.00 grams of Mg3(PO4)2?
Answers
Answer:
1.3 moles/ 1.33150727 moles
Explanation:
350g x 1 mol/262.86g = 1.3 moles
The molar mass of Mg3(PO4)2 is 262.855 g/mol
Atomic weight of the parts:
Mg 24.3050 x 3 = 72.92
P 30.973762 x2 = 61.95
O 15.9994 x8 = 127.995
There are 262.855 grams in one mole, so
350.00 g x (262.855g/1 mole) = 1.33 moles Mg3(PO4)2
NEED HELP! thank you!
The same element is present before and after a
O chemical change
O physical change
O chemical reaction
O none of these
Answers
Answer:
This is a physical change.
Explanation:
As long as the identity of the substance has not changed, and the element is present before and after, it is a physical change! (Ex: ice melting)
The Theory of _________ states that new ocean crust is formed at ocean ridges where plates are diverging.
Answers
IM IN A TEST NEED HELP ASAP
When 2.00 mol of the acid react with sodium carbonate, 1.00 mol of carbon dioxide is formed.Calculate the volume of carbon dioxide formed, in cm 3 , from 8.00 g of the acid at room temperature and pressure.
Answers
good luck on ur test i wish i could help u more but im only in 7th grade :/ and i dont know that yet, so sorry again! :(
Explanation:
How do astronomers observe and learn about celestial
objects?
Answers
Answer:
Astronomers use a number of telescopes sensitive to different parts of the electromagnetic spectrum to study objects in space. Even though all light is fundamentally the same thing, the way that astronomers observe light depends on the portion of the spectrum they wish to study.
Explanation:
How many grams of lithium sulfide (Li2S) are in 275 g of a 16 % aqueous solution of Li2S?
Answers
Answer:
600 mAh·g−1
Explanation:
i hope this is good let me know if its wrong
How does the digestive system work with the muscular system?
A: Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those
nutrients where they need to go.
B: It doesn't
C: The enteric nervous system's network of nerves, neurons and neurotransmitters extends along the entire digestive tract - from
the esophagus, through the stomach and intestines, and down to the anus.
D: The muscular system allows for movement within the body, for example, during digestion or urination.
Answers
Answer:
the answer is not d because you can pee without moving. so its a because without the food nutrient no part of our body can work
What's the equation used to calculate how far a wave has traveled?
Answers
Boreal forests are characterized by _______ trees. A. Creosote b. Eucalyptus c. Coniferous d. Deciduous Please select the best answer from the choices provided A B C
Answers
Answer:
c
Explanation:
coniferous trees, Tianga also called Boreal forest biome (major life zone).
hope it's perfect.
Answer: C is correct.
Write a balanced symbol equation for the incomplete combustion of hexane (C6H14) to produce soot.
Answers
Answer:
I77
Explanation:
What is the electric configuration for phosphorus?
Answers
That’s the electron configuration for phosphorus
what does appeal mean
Answers
Answer:
as a verb it means make a serious or urgent request, typically to the public.
"police are appealing for information about the incident"
as a noun it means a serious or urgent request, typically one made to the public.
"his mother made an appeal for the return of the ring"
Explanation:
hope it helps
Cuando haces ejercicios abdominales estas realizando un trabajo. Si haces el mismo numero de abdominales en la mitad de tiempo que acostumbras, ¿como seria tu rendimiento en terminos de potencia comparandolo con el tiempo normal en que las haces?
Answers
Answer:
El rendimiento seria mayor ya que la potencia aumenta.
Explanation:
La potencia aumenta cuando determinado trabajo se realiza en menor cantidad de tiempo.
Can some right a paragraph about photosynthesis pls =))))))))))))))))))))))
Answers
Answer:
Photosynthesis is the process in which plants harness energy from the sun to make their own nutrition. The process converts light energy into chemical energy through cellular respiration.
Explanation:
Just to start you off. I hope it helps! (❛ ᴗ ❛)
Answer:
Photosynthesis is the process which a plant makes it's own food. The plant get energy from the sun and water from the soil. The plant lets the suns energy flow though so it touches all the parts that need it. When it get the water from the soil it goes into the stem and to the leaves. Photosynthesis is important because it benefits the air and us too. We can also help by put carbon dioxide. Photosynthesis is part the life cycle of a plant.
Explanation:
What is the quantity of atoms in KMnO4 ?
Answers
Answer:
Potassium permanganate has a molar mass of 158.04 g/mol. This figure is obtained by adding the individual molar masses of four oxygen atoms, one manganese atom and one potassium atom
Explanation:
An advantage of using renewable energies is? 1.They are harmful to the environment 2.We have a limited supply of them 3.They allow us to take energy from natural processes
Answers
Answer:
3. They allow us to take energy from natural processes
Explanation:
There are two major sources of energy namely: renewable and non-renewable. Renewable sources of energy are those natural sources that gets replenished faster than they are utilized, which is contrary to non-renewable sources. Examples of renewable sources of energy are wind energy, solar energy, hydro (water) energy.
According to the question, one advantage or merit that renewable sources have over their counterparts is that they allow us to take energy from natural processes e.g. wind, sunlight etc.