Answer:
The carbon dioxide in the headspace above the liquid is at higher pressure than atmospheric pressure outside the can. ... The change in pressure as the gas rapidly moves to become dispersed through its new volume causes the "whoosh" sound. The gas law that applies is Boyle's law.
Explanation:
plzz mark as brainliest
PLEASE HELP !!! WILL GIVE BRAINLIEST !!!!
A molecule that has a linear shape has two electron domains around the central atom. How many lone pairs of electrons are present around the central atom? zero one two three
Answer:
zero
Explanation:
What is the name of the revolutionary book Darwin published?
Temperatures in Earth's interior increase with increasing depth. Seismic waves help to provide information on temperatures in Earth's mantle. Explain how seismic waves provide temperature information.
Answer:
Temperature affects Seismic Wave speed.
Explanation:
Both temperature and pressure affect the speed of Seismic waves. The Speed of Seismic waves increases uniformly as pressure increases, meaning that as depth increases, pressure also increases which causes Seismic Wave speeds to increase as well. This can be calculated and the data can be gathered. Temperature on the other hand decreases the speed of Seismic Waves, therefore we can calculate the difference of speed between what the Seismic Wave should be at a certain pressure with the actual speed gathered. This difference in speed will allow us to determine the actual temperature at that level.
my dad make me cry by cutting onions. he was a good dog.
Answer:
what are talking about
Explanation:
im sry dude. :(((
Explanation:
Which of the following statements about glaciers is true?
A. A single alpine glacier covers the island of Greenland.
B. Alpine glaciers are usually larger than continental glaciers.
C. Continental glaciers cover immense areas of land.
D. All of these choices are correct.
Answer:
The correct answer is D.
Glaciers fall into two groups: alpine glaciers and ice sheets. Alpine glaciers form on mountainsides and move downward through valleys. The largest ice sheets, called continental glaciers, spread over vast areas. Today, continental glaciers cover most of Antarctica and the island of Greenland.
Explanation:
Brainliest please?
Only answer if you know please thank you
Explanation:
1. liquid
2.celsius
3.true
4.evaporation since molecule releasing energy
5. this graph only shows exothermic phase change
why is my family dissapointed in me?
Answer:
literally same im failing almost every class and i just know my dad hates me because of it
Explanation:
Can two elements be used as reactants for a synthesis reactions?
Answer:
Two or more elements or compounds combine to form one product.
Explanation:
Yes, two elements can be utilized as reactants for synthesis reactions.
Both components of something like the equations should have a similar number of particles. A synthesis reaction could sometimes produce upwards of two products, could also yield binary chemicals.Such reactions are also among the primary kinds of chemical processes, along with single/double displacement, as well as combustion processes.
Thus the above response is correct.
Learn more about synthesis reactions here:
https://brainly.com/question/10451730
For the following unbalanced equation: Cu(s) + AgNO₃(aq) ➞ Cu(NO₃)₂(aq) + Ag(s) if 1.50 moles of copper and 3.00 moles of silver nitrate are available to react, how many grams of silver are produced? *
4 points
430 g Ag
324 g Ag
302 g Ag
108 g Ag
The ability of sodium chloride to dissolve in water is an example of a? chemical property chemical change physical change physical property physical change
Answer:
salt dissolving in water is usually considered to be a physical change, however the chemical species in salt solution (hydrated sodium and chlorine ions) are different from the species in solid salt.
Question 3 of 10
Which of the following is the best definition of a chemical change?
PLEASE HELP LOVE YOU :))
O A. A change in a substance where one or more new substances form
O B. A change in a substance where no new substance forms
O C. A change in a substance where energy is conserved
О
D. A change in a substance where a phase change occurs
SUBMIT
Answer:
A change in a substance where one or more new substances form
Explanation:
HF is a week acid. What particles would you expect to find in a solution of HF(aq)?
HF, H+ and F- particles
HF particles only
H+ and F- particles
H+ particles only
Answer:
HF, H+ and F- particles
Explanation:
The particles expected to be in an aqueous solution of a weak acid, HF, would be HF, H+ and F- .
A weak acid is one that does not dissociate completely in aqueous solutions. Hence, the dissociated particles are in equilibrium with the solution of the acid itself.
Thus, for weak acid, HF:
HF ⇌ H+ + F-
How many molecules are there in 35 grams of FeF3?
15. A pipe leaks water at a rate of 1.24 mL/s. What is the rate of the water leak in L/hr?
ALL
Answer:
4.46
Explanation:
1.24 ml= 0.00124 L
3600 s=1 hr
0.00124 x 3600=4.46
Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, the rate of the water leak in L/hr is 4.46L/hr.
What is matter?Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.
Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.
So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter.
1.24 ml= 0.00124 L
3600 s=1 hr
0.00124 x 3600=4.46L/hr
Therefore, the rate of the water leak in L/hr is 4.46L/hr.
To learn more about matter, here:
https://brainly.com/question/4562319
#SPJ2
One proposed cause of warming climates is a drastic increase in carbon found in the air and oceans. Which of the following causes of weathering is also be caused by
increased carbon in the atmosphere?
A. acid rain
B. oxidation
C. exposure to salt water
D. ice formation
Answer:
Acid Rain
Explanation:
Carbon dioxide lowers the pH in the atmosphere, causing it to become more acidic, which can lead to acid rain. This is also why the oceans are becoming more acidic as more carbon dioxide builds up.
4. The temperature of a fixed mass of gas in a rigid container is decreased from 127.00
degrees Celsius to 27.0 degrees Celsius. The initial pressure was 1.5 atm. Which is
closest to the new pressure after cooling?
A) 0.5 atm
B) 1 atm
C) 2 atm
D) 2.5 atm
Can you explain how you got the answer as well ?
Answer:
B) 1 atm
Explanation:
According to Gay-Lussac's law, the pressure of a given amount of gas at constant volume is directly proportional to its temperature (in Kelvin). This is mathematically expressed as:
P₁/T₁ = P₂/T₂
From the problem, we have the following data:
P₁= 1.5 atm
T₁= 127 °C + 273 = 400 K
T₂= 27 °C + 273 = 300 K
Thus, we calculate P₂ - final pressure - as follows:
P₂ = P₁/T₁ x T₂ = (1.5 atm)/(400 K) x 300 K = 1.125 atm
Therefore, the option which is closest to the new pressure after cooling is B) 1 atm
Which statements below would be true about burning a piece of wood? Select all that apply.
True or false
The sum of the number of protons and the number of neutrons in
an atom is the mass number.
Answer:
i think its false
Explanation:
The sum of the numbers of protons and neutrons in the nucleus is called the mass number and, expressed in amu, is approximately equal to the mass of the atom. An atom is neutral when it contains equal numbers of electrons and protons.
the process of cellular respiration occurs in
A. both plants and animal cells
B. plants cells only
C. animals cells only
D.neither plant nor animals cells
Answer: plants and animal cells
Explanation:
Someone please help me with this question!!!
Answer: Element 1, 3, and 4
I hope this helps, and stay safe! :)
Answer:
1, 3 and 4
Explanation:
. Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?
1. adhesion
2. surface tension
3. solvent properties
4. nonpolar
Answer:
The answer is surface tension.
Explanation:
The high surface tension helps the paper clip - with much higher density - float on the water. The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension. hope this helps :)
Three separate companies produce lye, a strongly basic compound used mainly to produce soap and detergents. Each company uses a slightly
different method but charges the same amount per gram of theoretical yield. The company with the highest efficiency will be the cheapest to
purchase from. You work for Dirt-Be-Gone, a detergent company and must choose which lye company to give a contract to. You purchase one
unit of lye from each company to compare their efficiency.
Company 1: Theoretical yield of 12,000 grams, actually produces 8,476 grams per reaction.
Company 2: Theoretical yield of 9,000 grams, actualy produces 7892 grams per reaction.
Company 3: Theoretical yield of 7,000 grams, actually produces 4885 grams per reaction.
Who will you choose to provide your company with lye?
A. Company 3
B. Company 2
C. All are equal
D. Company 1
I'll choose Company 2 to provide my company with lye
Further explanationGiven
Company 1 : Theoretical yield :12,000 grams, actually 8,476 grams
Company 2 : Theoretical yield :9,000 grams, actually 7892 grams
Company 3 : Theoretical yield :7,000 grams, actually 4885 grams
Required
compare their efficiency and choose the company
Solution
To determine which company to choose, we must calculate how much percent yield each company produces. The greater the yield, the greater the efficiency. The company that has the most efficiency will be selected
% yield can be formulated :
[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%[/tex]
Company 1[tex]\tt \%yield=\dfrac{8476}{12000}\times 100\%=70.63\%[/tex]
Company 2[tex]\tt \%yield=\dfrac{7892}{9000}\times 100\%=87.69\%[/tex]
Company 3[tex]\tt \%yield=\dfrac{4885}{7000}\times 100\%=69.79\%[/tex]
Company 2 has the most efficiency
What is the mass of 4.5 moles of nitrogen gas
n = m / M
m = n × M
Nitrogen (N2) - a gas is always with an index 2 if we don't have shown how many molecules are there
m (N2) = 4,5 mol × (2×14.007 g/mol)
m (N2) = 4,5 mol × 28.014 g/mol = 126.063g
if you don't solve with the decimals in class just replace 14.007 with 14
also if you haven't learned abour gasses aways having index 2 then:
m (N2) = 4,5 mol × 14.007 g/mol = 63.0315g
look at the drawing of a beach. how do the waves change the beach
A) They divide the beach in half.
B) They build sand hills on the beach.
C) They deposit and wash the sand away
D is an incorrect answer it tells me that on my test
Answer:
i think its C
Explanation: im at the Beach all the time and waves wash the sand away
Answer:
my first answer got deleted for no reason but the answer is C
Explanation:
in what organelle does photosynthesis occur
Answer:
chloroplasts
Explanation:
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.
How many Liters of space will a 70.0g sample of CO2 occupy?
Answer:
35.6 liters at STP
Explanation:
The molar mass of carbon dioxide is about 44.01 g/mol. The volume of a mole of ideal gas at STP is 22.4 L, so the volume of 70.0 g will be ...
(70.0g)/(44.01 g/mol)·(22.4 L/mol) ≈ 35.6 L
Which group contains the most elements?
a. Transition elements
b. Nonmetals
c. Metalloids
d. Metals
Answer:
it is metals, it is the most prominent type of element on the table
ANSWER
C,METALLIODS
SORRY PO KUNG MALI
#CARRYONLEARNING
2) What does aerobic respiration mean?
a) Using oxygen to turn glucose into ATP
b) NOT using oxygen to turn glucose into ATP
c) digestion
d) Working out
Answer:
the answer is d gs5hkdr o
nvm
6. Glucose, C,H,O, is a kind of sugar
molecule. How many atoms are in a
molecule of glucose?
A.6
B. 12
C. 18
D. 24
Mr. Costas drank a bottle of beer (500g) containing 5% w / w alcohol, while Mr. George drank two drinks (50g each) vodka containing 40% w / w alcohol.
How much alcohol did each of them consume? Which of the two drank the most alcohol?
Mr George drank more alcohol than Mr Costas
Further explanation:Given
500 g beer , 5% w/w alcohol
100 g vodka, 40% w/w alcohol
Required
Number of alcohol consumed
Solution
Mr Costas drank :
[tex]\tt 5\%\times 500~g=25~g~alcohol[/tex]
Mr George drank :
[tex]\tt 2\times 50\times 40\%=40~g~alcohol[/tex]
Mr George drank more alcohol than Mr Costas
