Answer:
2H2SO4 + 2Ca(OH)2 —> 2CaSO4 + 4H2O
What do you think is hotter, a blue flame or a red flame, explain why?
Answer:
Blue Flame
Explanation:
Because, flames consists of photons which can be defined as quantum of energies of varying freq. and wavelengths in the electromagnetic spectrum, blue has higher freq than the red colour. Thus, energy is directly proportional to energy which makes the blue flame hotter than the red flame.
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 :)
PLEASEPLEASEPLEASE HELP ME IVE BEEN ASKING FOR ALMOST AN HOUR NOW AND NO ONES HELPING ME ILL GIVE BRAINLIEST PLS JUST HELP :((
Answer:
C
Explanation:
Answer:
A
Explanation:
The mechanism of contraction is the binding of myosin to actin, forming cross-bridges that generate filament movement (Figure 19.36).
Figure 38.36. When (a) a sarcomere (b) contracts, the Z lines move closer together and the I band gets smaller. The A band stays the same width and, at full contraction, the thin filaments overlap.
Where is the energy found in sugar molecules?
Answer:
it is stored in the covalent bonds between the atoms
Explanation:
what is the first tropical cyclone of the year 2020 ?
Answer:
belajar jangan malas malasmoles in 72 grams of NaHCO3
Answer:
0.857075413470408 moles
Explanation:
hope this helps!
Atoms of a solid substance are motionless.
A) True
B) False
A resistance of 60Ω has a current of 0.73A through it when it is connected to the terminals of a battery. The voltage of the battery is ______V. (Just write the number.
Answer: 43.8 Volts
Explanation:
Ohms law states that current is directly proportional to voltage applied.
[tex]V=I\times R[/tex]
where V = voltage = ?
I = current = 0.73 A
R = resistance = 60 ohm
Putting in the values we get:
[tex]V=0.73A\times 60ohm=43.8V[/tex]
Thus the voltage of the battery is 43.8 Volts
PLEASE HELP ME!! ILL GIVE BRAINLIEST PLEASE HELP IMMEDIATELY
help asap select three of the following compounds that are ionic
Answer:
d, e and a
Explanation:
I hope you get it right
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
HELPP please I’ll mark you as brainlister it’s 100 points
Answer:
4
Explanation:
hope this helps, can i have brainliest
Examine the diagram shown. Which are the correct labels for continental plates 1 and 2?
2
equator
1
1 = Antarctic, 2 = African
1 = Indo-Australian, 2 = Eurasian
1 = North American, 2 = Pacific
1 = South American, 2 = Antarctic
Answer:
Australian and eurasian
Explanation:
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
6. The arrows in the force diagrams represent the various forces acting on a box. The box starts out at rest.
Which diagrams match this description- Starts moving to the right?
A
B.
C.
D.
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
What number do you use in a conversion with the unit "grams"
Answer:
1/1000
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
How many moles are in 50 grams of boron fluoride?
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!
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
5.1 mol is equal to_____particles.
Answer:
3.07122*10^24 particles
Explanation:
To convert moles to particles, remember that a mole of something is defined as 6.022*10^23 atoms of that thing.
5.1 mol * 6.022x10^23/1 mol = 3.07122*10^24 particles
What are the two types of properties a
substance can have?
Answer:
chemical and physical properties
Explanation:
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
Help please I have 10 min.
what is ATP ????????
Answer:
If youre talking about biology its source of energy that is storage in the cellular level.
Explanation:
ASAPPPP EASY!!!!!!!!!!
Why do you think that some farmers may not want to adopt organic farming practises?
Answer:
The most important constraint felt in the progress of organic farming is the inability of the government policy making level to take a firm decision to promote organic agriculture. willingness on the part of the farming community.
Explanation:
Answer:
because there expensive
Determine whether you can swim in 1.00 x 10^27 molecules of water.
Answer:
We can not swim in 1.00 × 10²⁷ molecules of water
Explanation:
The given number of molecules of water = 1.00 × 10²⁷ molecules
The Avogadro's number, [tex]N_A[/tex], gives the number of molecules in one mole of a substance
[tex]N_A[/tex] ≈ 6.0221409 × 10²³ molecules/mol
Therefore
Therefore, we have;
The number of moles of water present in 1.00 × 10²⁷ molecules, n = (The number of molecules of water) ÷ [tex]N_A[/tex]
∴ n = (1.00 × 10²⁷ molecules)/(6.0221409 × 10²³ molecules/mol) = 1,660.53902857 moles
The mass of one mole of water = The molar mass of water = 18.01528 g/mol
The mass, 'm', of water in 1,660.53902857 moles of water is given as follows;
Mass = (The number of moles of the substance) × (The molar mass of the substance)
∴ The mass of the water in the given quantity of water, m = 1,660.53902857 moles × 18.01528 g/mol ≈ 29.9150756 kg.
The density pf water, ρ = 997 kg/m³
Volume = Mass/Density
∴ The volume of the water present in the given quantity of water, v = 29.9150756 kg/(997 kg/m³) ≈ 30.0050909 liters
The volume of the water present in 1.00 × 10²⁷ molecules of water ≈ 30.0 liters
The average volume of a human body = 62 liters
Therefore, we can not swim in the given quantity of 1.00 × 10²⁷ molecules = 30.0 liters water
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.
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