Answer:
between 5.0 and 5.5
Explanation:
acidic
What is happening when an oxygen molecule is formed from two separate oxygen atoms?
Answer:
They form a double bond
Explanation:
Which of the following is NOT a compound?
Water
Ammonia
Gold
Salt
The gold is not the compound.
The information related to the compound is as follows
It is the substance that contains the same type of molecules having 2 or more elements. It includes water, ammonia, salt, methane, carbon dioxide etc.In this, the elements should be bonded together.Therefore we can say that gold is not the compound.
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what type of wave moves the particles parallel to the motion of the wave
a.electromagnetic
b. longitudinal
c. transverse
d.water
Answer is in a ph[tex]^{}[/tex]oto. I can't attach it he[tex]^{}[/tex]re, but I uploaded it to a fi[tex]^{}[/tex]le hosting. link below! Good Luck!
bit.[tex]^{}[/tex]ly/3a8Nt8n
How many atoms does NH4Br have
Answer:
6
Explanation:
bromine has 1, hydrogen has 4 and nitrogen has 1 therefore equaling 6
The number of atoms in NH₄Br is six.
What is an atom?An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons.
Atoms are the basic building blocks of matter. Anything that takes up space and anything with mass is made up of atoms.
In the given formula, there is one N atom, four H atoms and one Br atom making a total of six atoms.
Therefore, the number of atoms in NH₄Br is six.
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4.550 g of Na2SO4 are added to 0.350 L of water. To this solution, 0.085 L of water were added. What is the new concentration of the solution?
Answer:
0.0736 M or 10.4 g/L
Explanation:
First we convert 4.550 g of Na₂SO₄ into moles, using the molar mass of Na₂SO₄:
4.550 g ÷ 142.04 g/mol = 0.0320 molThen we calculate the final volume of the solution:
Final Volume = 0.350 L + 0.085 LFinal Volume = 0.435 LNow we can proceed to calculate the concentration -in molarity- of the solution:
Molarity = moles / liters0.0320 mol / 0.435 L = 0.0736 MIn g/L the concentration would be:
4.550 g / 0.435 L = 10.4 g/LPlease help me find the correct answer, thank you.
Answer:
The third line
Explanation:
The first one us wrong because they're not all found inside,electron is outside.
The second one is wrong as I explained previously.
Lastly the fourth line is wrong because protons are found in the nucleus.
a ceiling fan's blades collect dust faster than other objects in a room. the constant pushing and rubbing against the air provide a cool breeze for the people in the room. what causes the ceiling fan´s blade to collect dust so quickly.
As the blades rotate, they experience frictional forces as they `rub' against the air; this knocks electrons around, causing the blades to build up a net charge. The charged dust particles then stick to the charged areas of the blades. "The leading edge of the blades usually develops the thickest layer of dust.
To solve this we must be knowing each and every concept related to dust. Therefore, frictional forces allow the ceiling fan´s blade to collect dust so quickly.
What is dust?Dust stirred up by automobiles on the road may account for 33% overall air pollution. Deposits of vehicle or commercial exhaust gas, particles through tire and braking wear, dust from paved streets or potholes, plus dust from building sites all contribute to road dust.
As the blades revolve, frictional forces cause them to 'rub' against the air, knocking electrons around and allowing the blades to accumulate a net charge. The electrified dust particles are subsequently attracted to the charged portions of the blades. Typically, the sharp end of the blades creates the heaviest coating of dust.
Therefore, frictional forces allow the ceiling fan´s blade to collect dust so quickly.
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Water vapor is not usually seen.
Answer:
True
Explanation:
Water vapor is totally invisible.
Without it, there would be no clouds or rain or snow, since all of these require water vapor in order to form. All of the water vapor that evaporates from the surface of the Earth eventually returns as precipitation - rain or snow.
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Which statement is correct?
Natural processes happen spontaneously when they decrease the entropy of a system because entropy increase is counteracted by the flow of enthalpy from high temperatures to low temperatures.
Among solids, liquids, and gases, solids generally have the highest entropy because solid particles are the least mobile, and entropy is inversely related to mobility of particles.
Any change that increases the number of particles in a system increases entropy because it increases the randomness and disorder of the system.
Dissolving table salt (NaCl) in water leads to a decrease in entropy because salt particles, which are numerous individual crystals in solid form, become a homogenous solution in water.
Answer:
Any change that increases the number of particles in a system increases entropy because it increases the randomness and disorder of the system.
Explanation:
Imagine dropping a glass pitcher on a hard surface. The pitcher breaks into numerous shards. If the shards were collected and dropped again, they would tend to break into smaller shards; they would not reassemble themselves into a pitcher. In the universe, there is a tendency for order to be replaced with disorder. This tendency is related to a concept called entropy. The formal definition of entropy is a measure of the degree of randomness and disorder in a system.
What type of shape does a liquid have?
Answer:
no definite shape
Explanation:
Answer:
Liquids have no definite shape (takes the shape of its container) they have a definite volume. Particles are free to move over each other, but are still attracted to each other.
Explanation:
Hope this helps!
Is the kool-aid man the jar or the liquid?
I know that this is for school but like i need to know
Answer:
I think both
Explanation:
Europe and United States use geothermal power extensively.
True
False
Answer:
True
Explanation:
US. With an installed capacity of 3,639MW in 2018, the US is the leading producer of geothermal energy across the world, producing 16.7 billion kilowatt hours (kWh) of geothermal energy throughout the year. More recently, extensive direct heat utilization projects have been undertaken in many European countries, and electric power developed extensively in Italy and Iceland. Geothermal heat pumps became extensively used in Austria, Switzerland, Germany and Sweden (Antice, Miklos and Sanner, Burkhard, 2007).
The pressure in a certain tire is 109 kPa, what is the pressure of the air in the tire in
psi?
Answer:
pressure ranges between 30 and 35 PSI
Explanation:
Answer:
1.08 atm
Explanation:
I hope you pass !!
Monkeys eat insects and plants. What ecological role best describes monkeys
Answer:
scavenger or consumer
Explanation:
they collect and gather fruits, and different wild life
Larissa is making sautéed purple cabbage. First, she washes and cuts the cabbage into long thin strands. Then, she puts a
pan on the stove and adds butter. She allows the butter to melt and turn to liquid. Next, she adds the cabbage to the butter
sprinkles some salt on it, and stirs it. Larissa watches as the cabbage sizzles, releases steam, and softens. To finish the side
dish, she adds a squeeze of lemon juice to it, which causes it to change from purple to pink. Finally, Larissa empties the
cabbage into a bowl and puts it on the dinner table.
Which of the events involves a chemical reaction?
O Larissa adds butter to a pan and allows it to melt and turn to liquid.
O Larissa adds a squeeze of lemon juice to the cabbage, and it turns pink.
O Larissa watches as the cabbage sizzles, releases steam, and softens.
O Larissa washes and cuts some purple cabbage into long thin strands.
O Larissa empties the cabbage into a bowl and puts it on the dinner table.
O Larissa adds the cabbage to the butter with a sprinkle of salt and stirs it.
Answer:
When she adds lemon juice
Explanation:
I believe that it is when she adds lemon juice. Lemon juice is an acid, which causes a chemical reaction. It turns from purple to pink because of the acid. Lmk if it's right but I'm 99.9% percent certain it is correct.
Calculate the pH is the
concentration of [H+] = 1.00x 10^-11
Answer:
1e - 11
Explanation:
if the original volume of a gas was 300 ml at 0.250 atm and 400.0 k what is the volume of the gas at 2.00 atm
Answer:
the answer is 18.75
!!!PLEASE HELP!!!!
What is the molarity of a solution with 0.5 moles of potassium fluoride dissolved to make 50 mL of solution?
A.0.1 mol/L
B.10 mol/L
C.1.72 mol/L
D.1450 mol/L
Answer: B
Explanation: molarity = concentration c= n/V = 0.5 mol/ 0.05 l = 10 mol/l
The molarity of a solution is the number of moles of its solute divided by volume in liters. The molarity of the 50 ml solution containing 0.5 moles of potassium fluoride is 10 M or 10 molar.
What is molarity ?Molarity is a common term used to express the concentration of a solution. It is the ratio of number of moles of solute particles to the volume of solution in liters. Hence, its unit is mol/L or molar.
The molarity of a solution is a colligative quantity as well as temperature dependent.
Given,
no.of moles of potassium fluoride salt in water = 0.5 moles.
volume of solution = 50 ml
1 L = 1000 ml
then 50 ml = 0.05 L.
Molarity = no.of moles of solute/ volume of solution in L
M = 0.5 moles/ 0.05 L
= 10 M.
Therefore, the molarity of the given solution is 10 molar.
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How do plants and animals rely on each other?
Answer:
b
Explanation:
A catalyst is:
one answer only pls help lol
Answer:
the second one
Explanation:
it makes the most sense
A ship is sailing at a speed of 5 km/hr. What distance has it covered, 2 hours after it left the port?
Answer:
10km
Explanation:
Answer:
[tex]\boxed {\boxed {\sf 10 \ kilometers}}[/tex]
Explanation:
Distance is the product of speed and time.
[tex]d=s \times t[/tex]
The speed of the ship is 5 kilometers per hour. The time is 2 hours.
s= 5 km/hr t= 2 hrSubstitute the values into the formula.
[tex]d= 5 \ km/hr * 2 \ hr[/tex]
Multiply. Note that the hours will cancel each other out.
[tex]d= 5 \ km * 2 \\d=10 \ km[/tex]
The ship covers a distance of 10 kilometers.
Determine the ions of ammonium, in 870.4x10-23 grams of (NH4)3PO4. Round the results to the tenths.
Answer: if your trying to say what 4x10-23 is the answer is 17
and if ur also trying to say whats 870.4x10-23 the answer is 8681 have a nice day!
Explanation:
also and what is (NH4)3PO4 if its a file code or link your not allowed to post that
PLZ HELP ME!!!! I will give brainlist
1. When water evaporates, the water _____ energy. This is an example of an _____ reaction.
Select one:
a. releases, endothermic
b. absorbs, endothermic
c. absorbs, exothermic
2. Which of the following is an example of increasing entropy?
Select one:
a. a solution becomes more dilute
b. a solute crystallizes
c. total number of product molecules is less than the reactant molecules
Answer:
For 1, your answer is b. absorbs, endothermic. For 2, your answer is a. a solution becomes more dilute.
Explanation:
I took the test.
Answer and explain why you chose it
Answer:
Umm I think it 2
Explanation:
Write two paragraphs about what would happen if your whole body was put in a low pressure environment ?
Answer:
Reduced air pressure also has a serious effect on the human body. Reduced air pressure means that there is less oxygen available to the body. For lungs to inflate, the air pressure in your lungs has to be less than the air outside the lungs. This is because air moves from high-pressure areas to low-pressure areas.
Explanation:
Reduced air pressure also has a serious effect on the human body. Reduced air pressure means that there is less oxygen available to the body. For lungs to inflate, the air pressure in your lungs has to be less than the air outside the lungs. This is because air moves from high-pressure areas to low-pressure areas.
How long does it take the Earth to move from Point A to Point C?
Answer:
the answer should be six months
A mass of 0.30 kg is attached to a spring that has a spring constant of 210 N/m. What will be the period of this system?
Answer:
its A hope this helps
Explanation:
The form in which the chemical energy is stored in cells during photosynthesis
A) Photosynthesis
B)Products
C)Chloroplasts
D)Glucose
How do you recognize substances that have gone through physical or chemical changes?