*extra points*
Balancing chemical equations - I'm having some trouble with this question, can someone please help me out?
Answers
Answer:
3h2so4+2b(oh)3=b2(so4)3+6h2o
Related Questions
what is the name of the part of a cell that allows molecules in in, such as glucose and oxygen?
Answers
Answer:
A plasma membrane is permeable to specific molecules that a cell needs. Transport proteins in the cell membrane allow for selective passage of specific molecules from the external environment. Each transport protein is specific to a certian molecule (indicated by matching colors).
3 – Simple Diffusion Across the Cell (Plasma) Membrane: The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.
Or Cell Membrane
Explanation:
Hope This HElp??
Please MArk Me Brainly!!
which of the following methods of making electricity results in dangerous radioactive waste
A. Solar energy
B. Nuclear energy
C. Geothermal energy
D. Wind energy
Answers
Answer:
B. Nuclear energy
Explanation:
If parents wanted to pick their child's traits like hair color, gender, eye color, what would doctors have to do?
Answers
Answer:
Nothing
Explanation:
I would say this because the parents are picking the baby's traits and they make all the decisions. And i guess the doctor would have to follow the traits, if i'm right i tried
What is a catalyst and why is it used in chemical reactions?
Answers
Answer:
A catalyst is a substance that can be added to a reaction to speed up the process without being absorbed by it. Catalysts usually work by lowering the activation energy or modifying the mechanism of a reaction. Proteins that act as catalysts in biochemical reactions are known as enzymes.
Explanation:
why is it necessary to specify temperature when giving Ka value
Answers
Answer:
Because the equilibrium constant is only at constant at temperature. Changing the temperature changes the Ka.
GIVING BRAINLIEST AND THE REST OF MY POINTS!!!!! :D
A scientist made the following table showing the number of eggs laid by two different salmon. Based on this data, which fish has the best chance of their offspring surviving, and what type of adaptation is this?
A) Salmon #1, life cycle adaptation
B) Salmon #1, physical adaptation
C) Salmon #2, life cycle adaptation
D) Salmon #2, behavioral adaptation
Answers
Answer:
C
Explanation:I got it correct on a quiz I did that had this question
PLEASE WILL MARK BRAINLYIST
Answers
Answer:
3 i am pretty sure make me brainy i gust
Explanation:
what is the wave speed if the wave length is 8 and the frequency is 20
Answers
Answer:
160m/s
Explanation:
To find V Use the following formula V= F*W
V= Velocity F= Frequency W= Wavelength
V=20*8
=160m/s
The overnight temperature in Polokwane drops from 11° C to -2° C. By how many degrees has the temperature dropped?
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Jimmy is walking down the street and he notices that there is a small tree that has been uprooted from the ground. What two spheres are interacting in this scenario? *
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Answer:
Explanation:,.....
Explanation is in the file
tinyurl.com/wpazsebu
Iron + --> iron sulphate + copper What is missing ? Iron sulphate Copper sulphate Copper oxideIron oxide
Answers
Answer:
Copper Sulphate is missing
HELP!!!!!!!! 15 points and BRAINLIEST
Answers
Answer:
1 HBr + 1 KOH -> 1 KBr + 1 H2O
Explanation:
Mikala pours a tablespoon of salt into a beaker of water. Diffusion will cause the salt molecules to dissolve in the molecules of water. How could Mikala increase the diffusion rate of the salt molecules?
A. Mikala could remove all sources of light from the beaker.
B. Mikala could slowly pour more water into the beaker.
C. Mikala could decrease the temperature of the solution.
D. Mikala could increase the temperature of the solution.
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Explanation- diffusion rates increase at higher temperatures!
How does a graph show a runner at rest?
Answers
it goes from a high point to a low point back to a high point or vice versa.
What property of water accounts for its ability to insulate areas around it?
Answers
Answer:
Floating ice can insulate bodies of water. Answer: b. Discuss how a high specific heat helps to buffer temperature for organisms. Water's high specific heat is important to life because...
Explanation:
SHOW ALL WORK AND INCLUDE UNITS
How much heat is required to raise the temperature of 10.0 g of iron from 25°C to 100.°C? The specific heat capacity of iron is 0.46 J/g°C.
Answers
Answer:
345J
Explanation:
-mass of iron (m) = 10.0 g
-temperature (ΔT) = final temperature- initial temperature= 100-25= 75 degree Celsius
-Specific Heat capacity of iron (c)= 0.46J/g°C.
Heat (Q)=?
Solution:
Formula for Heat is :
Q=m x c x ΔT
Q= 10 x 0.46 x 75
Q= 345 J.
so, 345 joules of heat are needed to increase the temperature of 10 grams of iron.
From the above formula, all other questions can easily be solved from the same procedure.
345 joules of heat is required to raise the temperature of 10.0 g of iron from 25°C to 100°C.
How we calculate the required heat in any reaction?Required heat of any reaction can be calculated as:
Q = m x c x ΔT, where
In the question given that:
m = mass of iron = 10g
c = specific heat capacity of iron = 0.46J/g°C
ΔT = change in temperature = final temperature- initial temperature= 100-25= 75 degree Celsius
Now putting all these values in the above equation, we get
Q= 10g x 0.46J/g°C x 75°C = 345J
Hence, 345 joules of heat is required.
To know more about required heat of a reaction, visit the below link:
https://brainly.com/question/878982
Please help! This is for a test and I want to have a good grade. Have a great day! :)
Answers
Answer:
genetic engineering !! :)
Explanation:
also, i love the pfp <3
What is the symbol for entropy? S ΔH H ΔS
Answers
Answer:
S
Explanation:
The symbol for entropy is S, and a change in entropy is shown as “delta” S or ΔS. If the entropy of a system increases, ΔS is positive. If the entropy of a system decreases, ΔS is negative.
Which of the following is a characteristic of a scientific theory
1. It explains how nature works.
2. It is based on a single experiment.
3. It should not be possible to replicate its results.
4. It should not be possible to replicate its observations.
NEED URGENT!!!!!
Answers
Answer:
number one
Explanation:
hope I helped
PLZ HELP 20 PIONTSS!!!
i need a paragraph basically explaining what the carbon cycle is
Answers
Answer:
The carbon cycle explains how carbon travels from one reservoir to another on the earth. This cycle is vital for the Earth's atmosphere and carbon balance to remain stable.
Explanation:
Answer:
The carbon cycle describes the process where carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Since Earth's atmosphere forms a closed environment, the amount of carbon in this system doesn't change.
Explanation:
change the text a tiny bit
yes this is off g00gle but i changed some words
what does mass change to and what does it do
Answers
Answer:
Mass is the amount of matter in an object and does not change with location.
Explanation:
It’s cold outside and you decide to cook some pasta. As you boil the noodles, the kitchen window begins to fog up. Which processes are at work here?
boiling and freezing
vaporization and condensation
evaporation and thawing
condensation and evaporation
Answers
Answer:
condensation and evaporation
Explanation:
condensation forms when warm humid air contacts cold surface. during cold months.
All of the following increases down the group except one
A metallic character
B atomic size
C electropositivity
D ionization energy
Answers
Answer:
B: Atomic size
Explanation:
I just guess for the points
What element should I do a project on?
Answers
Answer:
Project scope statement?
Explanation:
it's good one just do research on it
Molarity and Dilution
How many moles are needed in a 100. mL solution of a 0.10M CuSO4 5H2O solution?
Answers
Answer: The moles needed are 0.01.
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]
where,
n = moles of solute [tex](CuSO_4.5H_2O)[/tex] = ?
[tex]V_s[/tex] = volume of solution in ml
Now put all the given values in the formula of molarity, we get
[tex]0.10=\frac{n\times 1000}{100}[/tex]
[tex]n=\frac{0.10\times 100}{1000}=0.01[/tex]
Therefore, the moles needed are 0.01.
someone help ,, I'll give brainliest lolll .
Answers
Answer:
the correct answer is c, how easily something catches flames
PLSSSSSSSS ANSWERRRRR
Answers
A gas tank contains 2.5 moles of oxygen, 7.0 moles of nitrogen and 0.5 mole of water vapor. The total pressure of the mixture is 852 torr. Calculate the partial pressure of each gas. Show work.
Answers
Answer:
The partial pressure of each gas is:
Oxygen= 213 torrNitrogen= 596.4 torrWater Vapor= 42.6 torrExplanation:
The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:
PT = PA + PB
This relationship is due to the assumption that there are no attractive forces between the gases.
Dalton's partial pressure law can also be expressed in terms of the mole fraction of the gas in the mixture. The mole fraction is a dimensionless quantity that expresses the ratio of the number of moles of a component to the number of moles of all the components present.
The mole fraction of a gas in a gas mixture is given by:
XA = nA / nT
This fraction will always be less than 1.
So in a mixture of two or more gases, the partial pressure of gas A can be expressed as:
PA = XA * PT
In this case, you know:
number of moles of oxygen= 2.5 molesnumber of moles of nitrogen= 7.0 molesnumber of moles of water vapor= 0.5 molesSo, the number of total moles nT is calculated as:
nT= number of moles of oxygen + number of moles of nitrogen +number of moles of water vapor
Then:
nT= 2.5 moles + 7.0 moles + 0.5 moles
nT= 10
So, the mole fraction of the gas in the mixture is:
mole fraction of oxygen = [tex]\frac{2.5 moles}{10 moles}[/tex] = 0.25mole fraction of nitrogen = [tex]\frac{7 moles}{10 moles}[/tex] = 0.7mole fraction of water vapor = [tex]\frac{0.5 moles}{10 moles}[/tex] = 0.05Being the total presurre (PT) equal to 852 torr, then:
Poxygen= 0.25*852 torr= 213 torrPnitrogen= 0.7*852 torr= 596.4 torrPwater vapor= 0.05*852 torr= 42.6 torrThe partial pressure of each gas is:
Oxygen= 213 torrNitrogen= 596.4 torrWater Vapor= 42.6 torrAcidified water is electrolysed by using carbon electrodes. What is produced
at Negative carbon electrode
Answers
Answer:
Hydrogen gas
Explanation:
During electrolysis of acidified water, H+ ions are reduced to H2 gas at the negative carbon electrode (cathode) and hence hydrogen gas is liberated at cathode.
Why is copper a good electrcity conducter
Answers
Explanation:
HOPE IT WILL HELP YOU TO SOLVE YOUR PROBLEM.Answer:
Each copper atom has lost one electron and become a positive ion. ... The electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons, because they help copper to be a good conductor of heat and electricity.