Answer:
Explanation:
Q3.What did you observe about the wavelengths and frequencies of the different colors of light?
Q4. Do the frequencies of colors of light increase from red to violet?
Q5. What did you observe about the corresponding energies from red to violet?
wavelength times frequency =c=the speed of light
the higher the frequency, the shorter the wavelength
the different colors of visible light are our good friend ROY G BIV
RED ORANGE YELLOW GREEN BLUE INDIGO VIOLET
As we go from red to violet, the wavelength decreases and the energy increases because the wave is vibrating at a higher number of vibrations per secomd. This is what "frequency' means, how many vibrations are there per second, how FREQUENT are thee.
the higher the frequency the more energy because the wave is vibrating faster.
the equation that relates this is Energy = h times frequency, where h is
Planck's constant = 6.262 x 10^-27 ERG-SEC
the frequency of vibration and therefor the energy of visible electromagnetic radiation (light) increase as we go across
ROY G BIV
Aqueous hydrobromic acid HBr will react with solid sodium hydroxide NaOH to produce aqueous sodium bromide NaBr and liquid water H2O. Suppose 3.24 g of hydrobromic acid is mixed with 2.3 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.
Answer:
7.20 X 10^-2 gm
Explanation:
Aqueous hydrobromic acid HBr will react with solid sodium hydroxide NaOH to produce aqueous sodium bromide NaBr and liquid water H2O. Suppose 3.24 g of hydrobromic acid is mixed with 2.3 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.
HBr(aq) + NaOH (S)-----------> NaBr (aq) + H20
mol wt of HBr = 1 + 79.9 = 80.9
3,24 gm of HBr = 3.24/80.9 = 0.00400moles = 4.00 X 10^-3 moles
mol wt of NaOH = 23.0 + 16.0 +1.01 = 40.0 gm
2.3 gm = 2.3/40.0 = 0.058 moles =5.8 X 10^-2
the reaction of HBr and NaOH is 1:1.
there are not enough moles of HBr to neutralize all of the NaOH. so
only 4.00X10 ^-3 moles of H2O can be produced
mol weight of H2O is (2 X 1.01) + 16.0 = 18.0
The maximum mass of H2O that can be produced is
18.0 X 4.00X10^-3 = 72.0/1000 =7.20 X 10^-2 gm
if the products of a reaction have higher energy than the reactants, then the reaction...
Answer:
Explanation:If the products of a reaction have higher energy than the reactants, then the reaction...
In the molecule above, the black circles are Carbon, the blue circles are Hydrogen
and the red circles are Oxygen. Which formula below is correct for this molecule?
Answer:
C2H4O2
Explanation:
The temperature of a gas is increased. Which statement best explains the effect that this has on the motion of gas
particles?
Answer:
The average kinetic energy increases, and the particles collide more frequently.
Explanation:
What makes inertia important in that activity?
What is the maximum number of electrons in an atom that can have the following quantum numbers? Specify the orbitals in which the electrons would be found. (a) n = 2, ms = +1 2; (b) n = 4, mℓ = +1; (c) n = 3, ℓ = 2; (d) n = 2, ℓ = 0, ms = −1 2; (e) n = 4, ℓ = 3, mℓ = −2.
Answer:
1.04
Explanation:
Heat is transferred from a fire to potatoes that are sitting on top of the coals.
Which type of heat transfer is occurring?
Answer: Is it Conduction?
Explanation:
Coal and diamond are both minerals .they are both expensive.why
Answer:
hard to find
Explanation:
Answer:
because actually diamonds is coal.
Explanation:
how diamonds is coal? because when the coal gets very high pressure it turns into diamonds.
please help me I need this done
Select the correct answer.
Which bond theory can easily predict magnetic and ionization properties?
A valence bond theory
В. molecular orbital theory
C. modern valence bond theory
D both molecular orbital and valence bond theories
Answer:
b molecular orbital therory
I need help with this
Answer:
129 units cubed
Explanation:
There are ten spaces between 120 and 130, so we can infer that each line represents a change in volume of 1 unit. The volume of the substance in the graduated cylinder looks like it's 1 under 130, so its volume is 129 units.
Hopefully this was helpful! :)
how many grams of aluminum nitrate are required to make a 100 grams of saturated solution at 40C?
Answer:
29 grams
Explanation:
At 20°C, a saturated solution of sodium nitrate (NaNO3) contains 86 grams of solute in 100 m of water.
This means the solubility of NaNO3 at 20°C is 86 g/100 ml of water
The solubility of NaNO3 at 50 °C is 115 grams of NaNO3/100 ml of water.
Therefore; to get the amount of sodium nitrate must be added to saturate the solution at 50°C;
We subtract the solubility at 20°C from the solubility at 50 °C
That is; 115 g/100 ml of water - 86 g/100 ml of water
= 29 grams of NaNO3
A GIRL WAIKS 10M NORTH,15M EAST AND THEN FINALLY 20MSOUTH FIND HER DISPLACEMENT
Answer:
see this
Explanation:
guys- my science teacher doesn't teach, he just says go on schoology
When table salt forms, which action occurs between the reacting elements? (1 point)
O Chlorine donates an electron to sodium.
Sodium shares an electron with chlorine. O Sodium donates an electron to chlorine.
O Chlorine exchanges an electron with sodium.
Answer: C: Sodium donates an electron to chlorine.
Explanation:
Sodium wants to lose an electron and chlorine wants to gain an electron to become stable. This is because of their place in the periodic table, sodium being on the very left edge and chlorine on the very right (noble gasses dont count as they are stable to begin with)
Therefore sodium will donate to chlorine so they both become stable with an ionic bond. (another way to tell its ionic is the very large difference in electronegativity)
When table salt forms, sodium donates an electron to chlorine resulting in the formation of bond which is formed when the electronic configurations become stable.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
Learn more about electronic configuration,here:
https://brainly.com/question/13497372
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What is helium an example of?
element
compound
atomic number
subatomic particle
Answer:I believe it is Subatomic Particle.
how long do you have to cook a turkey after it thaws
Answer:
Explanation:
A thawed turkey can remain in the refrigerator for 1 to 2 days. If necessary, a turkey that has been properly thawed in the refrigerator may be refrozen.
...
Thawing Your Turkey.
Thawing in cold water Time to thaw (allow 30 minutes per pound)
16 to 20 pounds 8 to 10 hours
20 to 24 pounds 10 to 12 hours
Using the picture below find the density of the irregular object.
Answer:
51.842/2.1 g/mL
Explanation:
the volume of the irregular object= 19.8 - 17.1 =2.7 mL
the density if the irregular object= mass ÷ volume = 51.842 ÷ 2.1 = 51.842/2.1 g/mL
What are compounds????????????????
Answer:
Compounds are pure substance consisting of two or more different atoms
Answer:
I hope this help
Explanation:
pls brainliest
what are the statement of ethanol
Answer:
Density 0.78945 g/cm3 (at 20 °C)
Melting point −114.14 ± 0.03 °C (−173.45 ± 0.05 °F; 159.01 ± 0.03 K)
Boiling point 78.23 ± 0.09 °C (172.81 ± 0.16 °F; 351.38 ± 0.09 K)
Solubility in water Miscible
Explanation:
mark brainliest
What fraction of the original atoms of the radioactive sample will remain after the given number of half-lives has passed?
Answer:
1/8
Explanation:
[tex] \frac{1}{ {2}^{3} } = \frac{1}{8} [/tex]
Mark brainliest please
Though hydrochloric acid is formed inside our body, it is not called organic acid. Why?
Explanation:
Hydrochloric acid does not consider as organic acid because of the absence of carbon in it.
hope it helps
65,000(0.08 x 200x 0.004) / (800x300)
Perform the following operations giving the proper number as a benefit get figures in the answer.
Help
Answer:
Use calculator but first group them one by one and open the bracket by solving them accordingly
The number we get by this operation is 0.016. This number can be taken based on the rules for significant figures.
What is significant figures?The number of significant figures is the number of digits that are known with certainty plus the last one having some uncertainty. All non zero values are significant and zero preceding first non zero digit is not significant .
For example in 65000, there are only two significant figures. Similarly in 0.08 only one significant digit is present. Now when we multiply two decimal numbers, the result can only have as many decimal places as there are in the value with fewest decimal places.
First, multiply the numbers inside the bracket. As per the above rule, the result should contain only two decimal places.
(0.08 ×200×0.004) = 0.06
Multiply by 65000 - 0.06×65000 = 3900
Now divide it by the multiplication product (800× 300), 240000 we get as follows:
3900÷240000 = 0.016
Hence the result of this operation is 0.016.
To learn more about significant figures, refer the link below:
https://brainly.com/question/17396594
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What is the mass of 1.20 × 1023 atoms of phosphorus?
show your work, please.
1227.6
Explanation:
po ang sagot khit i calculate nyo
please help me I need it now
Answer:
Ok for the question you can make up your own
If you can't make up your own tell me so I can try my best to come up with questions
1. Answer: Since and last are adverbs so am not sure how that part going to go
Type of Adverb for since is: Time
Type of Adverb for last is : Time
2. Question:
Answer: happily
Type: Manner
Hopes this helps you.
What is the total number of neutrons in an atom of O-18? a) 18 b) 16 c) 10 d) 8
Answer:
There are 10 neutrons
Explanation:
Because the atomic number is 8 and the isotope number is 18 (which is the collective protons and neutrons), we can do
18-8=10
Answer:
10
Explanation:
8 proton because it is oxygen
10 neutron because 18-8
ANSWER ASAP!!!! WILL GIVE BRAINLIEST IF RIGHT
PLEASE HELP ASAP!!!! (60 POINTS)
Answer:
copy and paste here ill do it
According to Newton's 3rd Law of Motion, if a force is exerted on an object, how does the other force occur?
A.Another force occurs that is in the same direction and at the same speed.
B. Another force occurs that is in the same direction and is the same size.
C. Another force occurs that is equal in size and opposite in direction
D. Another force occurs that is equal in speed and opposite in direction.
Answer:
Explanation:
According to Newton's third law of motion, forces always act in equal but opposite pairs. Another way of saying this is for every action, there is an equal but opposite reaction. ... When one object exerts a force on another object, the second object exerts the same size force on the first object
the answer is B
Answer:
C. Another force occurs that is equal in size and opposite in direction
Explanation:
According to Newton's 3rd Law of Motion, if a force is exerted on an object, how does the other force occur?
A.Another force occurs that is in the same direction and at the same speed.
B. Another force occurs that is in the same direction and is the same size.
C. Another force occurs that is equal in size and opposite in direction
D. Another force occurs that is equal in speed and opposite in direction.
NEWTON SAID "FOR EVERY ACTION, THERE IS AN EQUAL AND OPPOSITE REACTION"
A chemical property is a change in _____.
hardness
density
composition of matter
physical state
Answer:
Composition of matter
Which one of the following is a measure of the certainty of a
result comparing to a given value or the agreement of
measurements?
a. Accuracy
b. precision
c. Percentage
d. Uncertainty
Answer: a. Accuracy how close is your measurement tot the true value
Explanation:
Which one of the following is a measure of the certainty of a
result comparing to a given value or the agreement of
measurements?
a. Accuracy how close is your measurement tot the true value
b. precision; how close are yourr measurements to each other
c. Percentage: the ratio of tour measurement to the true value X 100
d. Uncertainty: how unsure are you of your measurements
