Answer:
A. It causes rocks to change color
Explanation:
Weathering can be defined as the gradual decomposition of rock. This means, rocks are broken into pieces or sediments through the process of weathering.
There are two types of weathering process:
1. Physical weathering also known as mechanical weathering. This is the breakdown of rocks into smaller pieces without changing the composition of the rock. Physical weathering is caused by the action of ice, wind, plant growth.
2. Chemical weathering: Here, the rocks changes not just in size of pieces but in its composition. This is when other minerals are applied on the rock in other to dissolve it.
How many grams of water are produced when 12.50 mol oxygen reacts with hydrogen?
Answer: According to reaction below, when one mol of oxygen reacts with two mol of hydrogen, two mol of water is produced. Thus, when 2.5 mol of oxygen reacted with hydrogen, 2 * 2.5 mol = 5 mol of water is produced. The molar mass of water is 18 g/mol.
Explanation:
Not My WORK! I got this info from another site. BUT I HOPE IT HELPS :)
How many moles of Chlorine gas are required to produce 5.35 moles of NaCl in this
reaction?
Answer:
2.675 moles of Chlorine gas are required
Explanation:
Chlorine gas, Cl2, reacts with NaBr to produce NaCl and Br2 as follows:
Cl2 + 2NaBr → 2NaCl + Br2
Where 1 mole of chlorine gas produce 2 moles of NaCl
Thus, to produce 5.35 moles of NaCl are required:
5.35mol NaCl * (1mol Cl2 / 2mol NaCl) =
2.675 moles of Chlorine gas are required10 points. Please help.
A balloon can hold 10 liters of a gas. If you blow up this balloon with 2 moles of oxygen gas at a pressure of 0.76 atmospheres, what is the temperature of the balloon? Pay attention to the unit of pressure used.
Answer:
The temperature of the balloon is 46.34 K.
Explanation:
An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.
An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:
P * V = n * R * T
In this case:
P= 0.76 atmV= 10 Ln= 2 molesR= 0.082 [tex]\frac{atm*L}{mol*K}[/tex]T= ?Replacing:
0.76 atm* 10 L= 2 moles* 0.082 [tex]\frac{atm*L}{mol*K}[/tex] *T
Solving:
[tex]T=\frac{0.76 atm* 10 L}{2 moles* 0.082\frac{atm*L}{mol*K}}[/tex]
T= 46.34 K
The temperature of the balloon is 46.34 K.
What is SnO2 compound name
3. Which model has properties most similar to chlorine?
Model A
Model B
Model C
Model D
Answer:
bnsjsbbakakaisbsbwnsjznss
Explanation:
cnsjzjsnsnsjs ssnsnsnzksmnznnzna
What is the pOH of a solution of pH 3 acid? (Kw= 1.0 x 10-14)
Answer:
pOH = 11
Explanation:
The pH is an unit of concentration widely used in chemistry to find the quality of a solution.
To solve this question we must, as first, find the [H+] using the pH:
[H+] = 10^-pH
[H+] = 10^-3
Now, using kw:
kw = 1.0x10-14 = [H+] [OH-]
1.0x10-14 = [10^-3] [OH-]
[OH-] = 1.0x10-11
pOH = -log [OH-]
pOH = 11what is oxidation of carbon compounds write the equation of these and name the oxidising agent used here
Answer:
It is equal
Explanation:
It is equal because there is the same amount of both and the measurment is correct.
The saturation point for a solution is 50.0 grams of solute per 500. grams of solvent. If you pour 70.0 grams of
solute into 800. grams of solvent, how many more grams of solute can you dissolve before reaching saturation?
Answer:
10.0g of solute before reaching saturation
Explanation:
A saturated solution is the solution that contains the maximum amount of solute that can be dissolved. In the problem, you can have
50.0g of solute / 500.0g Solvent
Now, in 800.0g solvent you can dissolve:
800.0g Solvent * (50.0g solute / 500.0g Solvent) = 80.0g of solute can be added
As you dissolve initially 70.0g of solute. You can add:
80.0g - 70.0g =
10.0g of solute before reaching saturationIt took 20.0 mL of NaOH to neutralize 25 mL of 0.50 M HCl. What is the molarity of the base?
Answer:
5/8 M
Explanation:
NaOH + HCl ====> NaCl + H2O
in 25 mL of 0.5M acid, we have 1/80 Mol of HCl
it mean we must have 1/80 Mol of NaOH.
20 mL = 1/50 L
(1/80)Mol / (1/50)L = 5/8 M
you can test carbon dioxide gas with
Answer:
you can test carbon dioxide gas with calcium hydroxide
hope this is what you're looking for
stay safe and have a nice day
✌◕ ◡ ◕✌
a dry cell produces_______ electricity.
A) static
B) current
Answer:
dude! it's static!
Explanation:
a dry cell can't function and is therefore static!
(2-2) Is the statement below true or false?
Pure water (H2O) can conduct electricity.
O True
O False
Answer:
its false..
Explanation:
pure water is an excellent insulator and does not conduct electricity. The thing is, you won't find any pure water in nature, so don't mix electricity and water.
hope it helps.
stay safe healthy and happy.....Answer:
False
Explanation:
Pure water does not conduct electricity. This is because pure water do not contain any salts. Pure water can conduct electricity when common salt is added to it, as salt solution is conducting in nature.
How many significant figures are in the measurement 1.3000 meters
Answer:
5
Explanation:
mark me brainliest!
Which of the following phase changes describes what is
happening in the following endothermic process?
H20 (1) + heat --> H2O (g)
O melting
o freezing
o boiling
O condensing
Answer:
I think the answer is boiling
a cell was taken from dolly the sheep and used to make a geneticly identical copy of her the copy lived to be 6 years old what is that called?
Explanation:
dolly was cloned I guess
plz do it ..i am confused
Answer:
.. ..
O : : C : : O
.. ..
Explanation:
What is the correct name for the chemical formula N408?
Answer:
molar mass (molar weight)
Explanation:
The 500 cubic centimeter of 0.250 M Na2SO4 solution,
added to an aqueous solution of 15.00 grams of barium
chloride, resulted in the formation of a white precipitate of
barium sulfate. How many moles and how many grams of
barium sulfate are formed, respectively?
Answer:
0.072 moles, 16.776g.
Explanation:
The reaction of Na2SO4 and BaCl2 occurs as follows:
Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq)
To solve this question we must find the moles of each reactant. As the reaction is 1:1, the reactant with the low number of moles is limiting reactant. The moles of limiting reactant = Moles BaSO4. The mass can be obtained with the molar mass of BaSO4 -233.38g/mol-
Moles Na2SO4:
500cm³ = 0.500L * (0.250mol / L) = 0.125 moles
Moles BaCl2 -Molar mass: 208.23g/mol-
15.00g * (1mol / 208.23g) = 0.072 moles
The moles of BaSO4 are 0.072 moles and its mass is:
0.072 moles * (233.38g / mol) = 16.8g ≈ 16.776g
Depressants are often classified according to __________. Group of answer choices their MSA rating the degree to which they react with alcohol the degree they decrease CNS activity the first letter in their names
Answer:
the degree to which they decrease CNS activity
Explanation:
Drugs can be classified as;
✓hallucinogens, example is (LSD)
✓ stimulants, example is (cocaine)
✓opium-related painkillers example is (heroin)
✓depressants
Depressants can be regarded as medicines, that lowers neurotransmission levels, that is depressing or reducing arousal or stimulation as regards to various areas of the brain. these could be tranquilizers, as well as hypnotics and
sedatives. They are drugs used in slowing brain activity, therefore, making them useful when treating anxiety, sleep disorders, panic and acute stress reactions.
Example of Depressants are;
✓Xanax
✓Halcion
✓Klonopin
✓Librium
It should be noted that Depressants are often classified according to the degree to which they decrease central nervous system (CNS) activity.
Write a hypothesis using IF-THEN - BECAUSE of statement. (PLEASE HELP)
Ahmed is curious about the death of the fishes in the ocean. He knows from his environmental chemistry class that pollutants like heavy metals can cause the rapid death of marine organisms. So, Ahmed did an experiment and obtained water samples. He tested that water contains a high amount of lead and chromium.
Water is an essential part of life and its availability is important for all living creatures. On the other side, the world is suffering from a major problem of drinking water. There are several gases, microorganisms and other toxins (chemicals and heavy metals) added into water during rain, flowing water, etc. which is responsible for water pollution. This review article describes various applications of nanomaterial in removing different types of impurities from polluted water. There are various kinds of nanomaterials, which carried huge potential to treat polluted water (containing metal toxin substance, different organic and inorganic impurities) very effectively due to their unique properties like greater surface area, able to work at low concentration, etc. The nanostructured catalytic membranes, nanosorbents and nanophotocatalyst based approaches to remove pollutants from wastewater are eco-friendly and efficient, but they require more energy, more investment in order to purify the wastewater. There are many challenges and issues of wastewater treatment. Some precautions are also required to keep away from ecological and health issues. New modern equipment for wastewater treatment should be flexible, low cost and efficient for the commercialization purpose.
what is acid? Explain it
Answer:
An acid is a chemical that is posining or sometimes not
Explanation:
This is the best I could explain brainliest
What is Radical. Write it types also.
Answer:
Radical is a charged ion
the types are cation and anion.
cation is positively charged and anions are negatively charged
Explanation:
In a titration, a few drops of an indicator are added to a flask containing 35.0 milliiters of HNO3(aq) of unknown concentration. After 30.0 millliters of 0.15 M NaOH(aq) solution is slowly added o the flask, the indicator changes color, showing the acid is neutralized. Which choice is a correct numerical setup for calculating the concentration of the HNO3(aq) solution
Answer:
0.13M HNO3 is the concentration of the unknown
Explanation:
Nitric acid, HNO3, reacts with NaOH as follows:
HNO3 + NaOH → H2O + NaNO3
Where 1mol HNO3 reacts with 1mol NaOH
To find the concentration of HNO3 we must find, as first, the moles NaOH added = Moles HNO3 in the solution:
30mL * (1L / 1000mL) * (0.15mol / 1L) = 0.0045 moles HNO3
In 35.0mL = 0.035L:
0.0045 moles HNO3 / 0.035L =
0.13M HNO3 is the concentration of the unknown
please mark all that apply!
Answer:
F G there you go the guy on top is right
Explanation:
F G
based on the graph below, which statement
Answer:
4. Atmospheric pressure decreases as altitude increases.
Explanation:
hope this helps and is right. p.s i really need brainliest :)
When temperature drops, (for example from 20 degrees celsius to 10 degrees celsius)
a.) energy increases
b.) particles move slower
c.) particles collide more often
d.) pressure increases
What is the percent by volume of 12.5 mL of ethanol in 250 mL of water?
3%
5%
4%
6%
4. There are 1.9 moles of Oxygen gas at a pressure of 3.50 atm, and the temperature is 65°C. What is the
volume of the gas? Remember that R = 0.0821 L x atm/Kx mol AND that you must convert °C to K.
Fill in the variables chart:
Answer:
15.06 L
Explanation:
Using the ideal gas law equation:
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
According to the information provided in this question,
P = 3.50 atm
n = 1.9 moles
V = ?
T = 65°C = 65 + 273 = 338K
Using PV = nRT
V = nRT/P
V = (1.9 × 0.0821 × 338) ÷ (3.5)
V = 52.725 ÷ 3.5
V = 15.06 L
Inyour body what's your systems work together to make sure that oxygen to all the organs of your body?
A. Respiratory and Excretory
B. Circulatory and Respiratory
C. Nervous and Excretory
D. Circulatory and Disgestive
PLEASE ANSWER QUICKLY!! LOTS OF POINTS!❤
Phosphorous has two common isotopes, phosphorous - 30 and phosphorous - 31. Using the periodic table what can you infer about these two isotopes?
Explanation:
The idea here is that you need to use the Periodic Table of elements to find the mass number of the most common isotope of phosphorus, P.