Answer:
use the equation moles = mass / rfm. we can't answer this because you haven't gave us the molar mass. if the question you have has 2 moles, divide the reactant by 2 to even it as well as the mass
moles in 72 grams of NaHCO3
Answer:
0.857075413470408 moles
Explanation:
hope this helps!
Where is the energy found in sugar molecules?
Answer:
it is stored in the covalent bonds between the atoms
Explanation:
6.
A crystal of the purple compound potassium manganate (VII) is placed at the bottom
of a beaker of water and the beaker left until there
is no further change. What will be
observed?
A a uniformly purple solution.
B
a purple layer below a colourless layer.
С a colourless layer below a purple layer.
D a deep purple layer below a pale purple layer.
Sec 3/KPT and SMS/2021
Page 2 of 3
Answer:
I don't know
Explanation:
sorry i just need point to ask so i have comment
Which property is dependent only on the atomic structure of the compound? *
total thermal energy
melting point
volume
mass
I think its mass of volume
X
What period are
the elements
that have an
outer layer O in?
Answer:
carbon
Explanation:
second (n = 2) shell, more specifically its 2s and 2p subshells.
3- a) write the formula unit of calcium fluoride.
b) A certain mass m of calcium fluoride contains 1.2*10^23 anions. Deduce the mass (m). NA= 6.02*10^23
Answer:
a) CaF₂.
b) 7.81g of CaF₂ are present.
Explanation:
a) The calcium ion has as charge Ca²⁺ and fluoride ion is F⁻, that means formula unit is:
CaF₂
b) 1 molecule of CaF₂ contains 2 anions, F⁻. Thus, the moles of CaF₂ is:
1.2x10²³ anions * (1 moleculeCaF₂ / 2 anions) = 6x10²² molecules of CaF₂
6.022x10²³ molecules = 1mol:
6x10²² molecules of CaF₂ * (1mol / 6.022x10²³molecules) = 0.10 moles CaF₂.
1 mole of CaF₂ has a mass of 78.07g:
0.10 moles CaF₂ * (78.07g / mol) =
7.81g of CaF₂ are present
what is the other term used to describe tropical cyclone when it is formed in the northwestern part of the pacific ocean
Answer:
Typhoons
Explanation:
A tropical cyclone is a word that is used by meteorologists to explain a rotating, organized system of clouds & thunderstorms that take their origins over tropical or subtropical waters and also possess closed but low-level circulation.
Now, In the Northwest part of the Pacific ocean, these tropical cyclones which are west of the dateline are referred to as Typhoons while In the southwest Pacific and in the Indian Ocean they are called Cyclones. Lastly, those that form over the Atlantic Ocean or eastern Pacific Ocean are referred to as hurricanes
Why have rainforest plants adapted to be a different shape and size than desert plants?
A
because rainforest plants are only raised in zoos
B
because in a rainforest environment, adaptation can happen overnight
с
because rainforest plants and desert plants need to store the same amount of
water
because the rainforest environment is different than the desert environment
Answer:
option D is correct answer of this question
option D is correct answer of this questionbecause the rainforest environment is different than the desert environment
option D is correct answer of this questionbecause the rainforest environment is different than the desert environment hope it will help
The reason of why rainforest plants adapted to be a different shape as compared to the desert plants is because of option d. as the rainforest environment is different than the desert environment.
Adaption of the rainforest plants to the different shapes and size?
It can be like:
Drip tips - where plants contains leaves with pointy tips.Buttress roots - These contain large roots that have ridges that develop a large surface area. Epiphytes - It lives on the branches of trees high up in the canopy.hence, The reason of why rainforest plants adapted to be a different shape as compared to the desert plants is because of option d. as the rainforest environment is different than the desert environment.
learn more about rainforest plants here: https://brainly.com/question/2170925?referrer=searchResults
help asap select three of the following compounds that are ionic
Answer:
d, e and a
Explanation:
I hope you get it right
Which ionic compound would you predict to have a higher boiling point: NaBr or
Na2S
Why did you select this compound?
Answer:
The boiling point of NaBr is higher than that of Na2S
Explanation:
Bromine has higher electronegativity as compared to the sulphur. The ionic strength of the bond formed with Sodium is higher in the NaBr compound. The higher the ionic bond strength the higher will be the boiling point
Also the size of bromine is large as compared to that of sulphur. Large molecules consists of more electron and hence they create der Waals attractive forces due to which the boiling point of compound increases.
Hence, the boiling point of NaBr is higher than that of Na2S
Do you believe humans are responsible for global warming or do you believe this is part of a natural cycle of Earth, like periodic ice ages?
Answer:
If I had to choose I think it would be humans fault.
Explanation:
To think that we are the reason for global warming and everything would make the next person a little insulted but when you think about it a long time ago when there was not many technological advancements there was not complains of global warming or anything until recently. Temperatures are starting to rise and more and more pollution is filling our atmosphere. As it could be true that it might not be entirely our fault as humans I think we took a major part in it.
Hope this helps :)
Help please I have 10 min.
Atoms of a solid substance are motionless.
A) True
B) False
8)
How many molecules are there in 230 grams of CoCl2?
Answer:
1.07x10^24
Explanation:
thats the answer
Therefore, the number of mole will be 1.065 × [tex]10^{24}[/tex].
What is mole?
A mole is the quantity of a substance containing 6.023 x [tex]10^{23}[/tex] particles of that substance. The mole is really the SI unit for a substance's quantity.
It is given that, mass of 230 gram of CoCl2.
Moles = mass / molar mass
Put the value of given data in mole formula.
Moles = 230 / 129.8
Moles = 1.77
It is known that, 1 mole = 6.02 × [tex]10^{23}[/tex] molecule.
Hence, 177 moles = 6.02 × [tex]10^{23}[/tex] × 1.77 = 10.65 × [tex]10^{23}[/tex] .
Therefore, the number of mole will be 1.065 × [tex]10^{24}[/tex].
To know more about mole.
https://brainly.com/question/19922822
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A recipe for bread states that the dough must bake for 40 minutes at a temperature of 190°C. The oven you are using has temperature marking on the dial that are in units of degrees Fahrenheit. At what Fahrenheit temperature must the bread be baked? What would this temperature be in Kelvins?
Answer:
374°F
463.15K
Explanation:
This particular Question wants to test knowledge on the conversion of the units of temperature from celsius degree to degree Fahrenheit. Also, the conversion of degree celsius to kelvin.
The value given which is 190 degree celsius can be converted into degree Fahrenheit using the formula below;
(x°C × 9/5 ) + 32.
Therefore, x = 190°C =( 190°°C × 9/5) + 32 = 374°F.
The conversion of degree celsius to kelvin is given below as;
x°C + 273.15 .
Therefore, x = 190°C = 190°C + 273.15 = 463.15K.
Therefore, the temperature needed to bake at Fahrenheit and kelvin are 374°F and 463.15K respectively.
what is ATP ????????
Answer:
If youre talking about biology its source of energy that is storage in the cellular level.
Explanation:
if the energy of an electron goes farther from the nucleus,it's energy ____. plss help me po
Explanation:
As you go farther from the nucleus, electrons at higher levels have more energy, and their energy increases by a fixed, discrete amount. Electrons can jump from a lower to the next higher energy level if they absorb this amount of energy.
0.450 gram of Fe contains how many atoms?
Answer:
0.450 grams of Fe contains 4.85*10²¹ atoms
Explanation:
Molar mass is the mass of one mole of a substance, which can be an element or a compound.
In this case, the molar mass of iron Fe is 55.85 g / mole. Then you can apply the following rule of three: if by definition of molar mass 1 mole of Fe contains 55.85 grams, then how many moles will contain 0.450 grams?
[tex]amount of moles of Fe=\frac{0.450 grams*1 mole}{55.85 grams}[/tex]
amount of moles of Fe=8.06*10⁻³ moles
On the other hand, Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number applies to any substance.
Then you can apply the following rule of three: if by definition of Avogadro's Number 1 mole of Fe contains 6.023*10²³ atoms, 8.06*10⁻³ moles how many atoms does it contain?
[tex]amount of atoms=\frac{8.06*10^{-3}moles*6.023*10^{23}atoms }{1 mole}[/tex]
amount of atoms= 4.85*10²¹ atoms
0.450 grams of Fe contains 4.85*10²¹ atoms
Balance the following equation..
Answer:
CH4+4Cl2=CCl4+4HCI
Explanation:
It's been a while since i've done one of these, but I believe this is right. Hope this helps!
PLEASE HELP Name and define the subatomic particles that are part of an atom. How do they differ from each other? How do these differences contribute to the properties of atoms and molecules?
Answer:
Explanation:
The nucleus is made of protons and neutrons. The protons define element and have a positive charge. Neutrons have no charge. Atoms also have a cloud of electrons surrounding the nucleus. Electrons are negatively charged. The transferring/removal of electrons determines the charge.
The atom consists of 3 subatomic particles:
Protons: They are positively charged particles present in the nucleus of an atom.Electrons: They are negatively charged particles present in the orbits around the nucleus of an atom.Neutrons: They are neutral particles present in the nucleus of an atom.An atom can be defined by its properties:
Atomic number: It is equal to the number of protons present in a neutral atom.Mass number: It is equal to the sum of number of protons and number of neutrons.Charge: If an atom does not lose or gain any electron, it is a neutral atom. If it loses electrons, it attains a positive charge and if it gains electrons, it attains a negative charge.Thus, we can conclude that protons define the atomic number, neutrons define mass number and electrons define charge on an atom.
Learn more about subatomic particles here: https://brainly.com/question/13303285
Balance the following equation (separate your answers with commas):
____AgNO3 + ____Cu --> ___Cu(NO3)2 + ____Ag
PLEASE HELP ME!! ILL GIVE BRAINLIEST PLEASE HELP IMMEDIATELY
HELPP please I’ll mark you as brainlister it’s 100 points
Answer:
4
Explanation:
hope this helps, can i have brainliest
Which properties describe all matter? A. being able to be seen in nature B. having energy and temperature C. having mass and taking up space
Answer:
C. having mass and taking up space
good luck, i hope this helps :)
select three of the following compounds that are ionic
Explanation:
Ionic compounds are compounds formed by the bonding of a metal with a non metal.
A. NO2
This is not an ionic compound because N and O are non metals.
B. CaCl2
This is an ionic compound because Ca is a metal and Cl is a non metal.
C. KI
This is an ionic compound because K is a metal and I is a non metal.
D. CO2
This is not an ionic compound because C and O are non metals.
E. H2O
This is not an ionic compound because H and O are non metals.
F. NaCl
This is an ionic compound because Na is a metal and Cl is a non metal.
1.When two systems that have the same temperature are put in contact with each other, is there heat transfer going on?
2.When two systems that have different temperatures are put in contact with each other, is there going to be heat transfer? Explain.
Answer:
Sorry I don't know the answer of your question I am sorry.
Which structure represents nonane?
ОА.
Н
---
H-C-H
т
Н
ОВ.
H H
1 т
н-с-с-Н
1
Н Н
Ос.
Н
H
H H
т
H-C— С
1
H H
H
І
СЕН
1
Н
Н
Н
OD.
Н
1
Н
Н
H
T
Н
Н Н H
І т
H-C— С—
т
Н H Н
І
С
1
Н
1
H
І
Н
Н
С— г-н
1
Н H
Reset
Next
Explanation:
i don't understand what you wrote, but nonane is C9H20
what is the first tropical cyclone of the year 2020 ?
Answer:
belajar jangan malas malashow many moles are there in 9.2g of ethanol
Answer:
0.199702876850182 that's it
a = 10 m/s - 5 m/s
5S
Answer:
what is the formula?
Explanation: