I need help with this bill nye worksheet. someone help. It's due tomorrow cant mess my grade up. I just picked a random subject but it's science.(7th grade)
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send a better picture please and thank you
Related Questions
18 which solution has a molality of 0.25 m Naci?
0.5 mol Naci in 4.0 kg water
0.25 mol NaCl in 10 kg water
0.25 g Nai in 1.0 kg water
1.0 kg NAC in 40 kg water
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is mendelevium flammable
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Why does the color absorded by a solution differ from the color of the solution.
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Answer:
The size of the particle has a color effect in Rayleigh scatter, but that is unrelated to your question. In the visible spectrum, the main factor determining the color is electronic transitions in the atoms and molecules which make up the substances.
For very simple compounds, it is relatively easy to determine the absorption bands. The bands could possibly change in solution because the electrical environment of the compound’s molecules could change while in solution with water’s polar molecules. However, in many cases, the bands only change slightly so that a purple crystal for example might remain a purple color in aqueous solution.
Some compounds are very sensitive to ionization and to the pH of the aqueous solution, and for these compounds you may see large color shifts as they go into solution.
How many moles of carbon tetrachloride are produced when 4.63 mol of carbon reacts with
excess chlorine? Complete and balance the equation for this chemical reaction first.
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Answer:
4.63 moles of CCl4
Explanation:
C + 2Cl2 = CCl4
The balanced equation tells us that we'll obtain 1 mole of CCl4 for every 1 mole of C, assuming we have 2 or more moles of Cl2 (which we do in this problem).
Therefore, if we start with 4.63 moles of C, we'll produce 4.63 moles of CCl4
Adding boron to molten glass: ___________
a. Makes the glass much harder
b. Makes it more stable to rapid temperature changes Has no effect on glass
c. Makes the glass more liquid like so that it flows
d. Adds a greenish tint to the glass
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Answer:
b
Explanation:
cause if so it like more stable when the molten part thing happened
Name two properties that make solutions different from colloids.
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Answer:
1. the apperance of a solution is clear while that of a colloid is dull
2. colloids are heterogenou while solutions are homogenous
how are decomposers in a forest and kelp forest ecosystem similar and different)
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Name the elements that make up lithium hydroxide.
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Answer:
Lithium, oxygen, and hydrogen.
What Is Chromium: Chemical Formula Of Sodium Bicarbonate
Uses Of Cotton: Acetone Formula
Solution Examples: Amino Acid Formula
Explanation:
HOPE ITS HELP;)
Are two atoms of the same element identical?
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Answer:
No they are not identical.
Explanation:
They are not identical because there are many ranges of states that the electrons could have.
I hope it helps! Have a great day!
Muffin ^^
Answer:
No.
Explanation:
It could vary so it wouldn’t be identical.
I hope it helps! Have a great day!
bren~
What influences ionisation energy
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Answer:
What are the trends of ionization energy?
Ionization energy is the minimum energy required to remove an electron from an atom or ion in the gas phase.
The most common units of ionization energy are kilojoules per mole (kJ/M) or electron volts (eV).
Ionization energy exhibits periodicity on the periodic table.
Explanation:
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Who know how to do this♀️
4L of a solution contains 80.Omoles of solute, what is the molarity? (show all work)
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What is the number of moles of kf in a 29-gram sample of the compound.
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Given
Weight of pottasium fluoride (KF) = 29 gms
To find
Number of moles of pottasium fluoride = ?
Solution
we know that molar mass of KF = 58.0967 g
Now,
[tex]number \: of \: moles = \ \\ \frac{given \: weight \: of \: subtance}{molar \: mass} [/tex]
Number of moles = 29/58 = 0.5 moles
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Answer: 0.50 mol
Explanation:
if you solve you get choice 3 (0.50)
Exactly how many gallons are in a 1 gallon jug of water?.
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A 350. mL air sample collected at 35°C has a pressure of 550. torr.
What pressure will the air exert if it is allowed to expand to 425 mL at 57°C?
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[tex]\tt \dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}[/tex]
T₁ = 35 + 273 =308 K
T₂ = 57 + 273 =330 K
550.350/308 = P₂.425/330
P₂ = 485.29 torr
2. If you are given the mass of a reactant in grams and want to calculate the mass of
a product in grams, what are the three steps of the calculation you must perform?
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Answer:
1. Convert given mass of reactant to moles.
2. Convert moles of reactant to moles of product using the coefficients in the balanced equation.
3. Convert moles of product back to grams of product
Explanation:
In order to find out the mass of a given product in grams you would have to convert the grams into moles by multiplying 1 mole over the given mass of the reactant. Then, you would convert the moles of the reactant into moles of the product using mole ratio. And lastly, you would multiply by the mass of the product to calculate the mass back to grams.
Hope this helps!!<3
mention roles played by Moses
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Answer:Each event in the journey from Egypt to Mount Sinai, where God delivers his laws to the Israelites, propels Moses further into the roles of prophet, priest, ruler, and savior of Israel. Moses' most heroic virtue is his steadfast obedience, and it might be said that a passive quality permeates each of his miracles.
Explanation:
101. During the making of steel, iron(II) oxide is reduced to metallic iron by treatment with carbon monoxide gas.
FeO (s) + CO (g) Fe ( s)
Suppose 1.45 kg of Fe reacts. What volume of CO(g) is required, and what volume of CO2(9) is produced, each measured at STP?'
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Explanation:
At a certain temperature, iron (II) oxide, FeO, can react with carbon monoxide, CO, to form elemental iron, Fe, and carbon dioxide, CO2. The value of Kp at that temperature is 0.242. What is the pressure of CO2 at equilibrium if a sample of FeO was initially in a container with CO at a pressure of 0.95 atm? The chemical reaction involved in this process is: FeO(s) + CO(g) ⟷ Fe(s) + CO2(
What happens to the air as it warms up?
It rises.
It sinks down.
Its temperature decreases.
It turns into clouds.
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A state government is trying to decide between using windmills or a nuclear
power plant. What advantage does nuclear power have over wind power?
O A. Nuclear power uses the kinetic energy of wind.
B. Nuclear power can produce electricity in any weather.
O C. Nuclear power produces less waste.
D. Nuclear power produces more greenhouse gases.
SUBMI
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Answer:
B. NUCLEAR POWER CAN PRODUCE ELECTRICITY IN A Y KIND IF WEATHER.
what's an exothermic reaction-_-
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Answer:
An exothermic reaction is a reaction in which heat is libberated or given off to the surroundings.
Explanation:
Example: neutralisation reaction.
is dimensional analysis the same thing as unit conversions?
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Answer:
The answer is no
Explanation:
the factor-label method, also known as the unit-factor method, is a widely used technique for such conversions using the rules of algebra.
When the ocean water freezes or evaporates, the salinity of the ocean
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Answer:
As water freezes or evaporates, what happens to the salinity of the remaining ocean water? There is no change to salinity.
Explanation:
1. Organelles in prokaryotic cells include the
(a) mitochondria.
(b) cytoskeleton.
(c) Golgi complex.
(d) none of the above
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How is pomace related to the apple and yogurt industries? (1 point)
Pomace is a waste material from apple juice production that can be added to yogurt to boost nutritional value.
Pomace is a chemical from apples that can be used to remove non-nutritional products from yogurt.
Pomace is a waste material from yogurt production that can be added to apples to boost nutritional value.
Pomace is a chemical from yogurt production that can be used to purify waste from apple juice production.
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Pomace is a waste material from apple juice production which can be used in yogurt industry in order to increase more nutrients.
What is relation of pomace to apple and yogurt industries?Pomace is a waste material that can be extracted after apple juice production. It can be added to yogurt to boost nutritional value. Apple pomace is also used to produce pectin, ciderkin, a weak cider, as well as white cider so we can conclude that Pomace can be used in yogurt industry in order to increase more nutrients.
Learn more about pomace here: https://brainly.com/question/672528
Answer:
A. Pomace is a waste from Apple production that can be added to yogurt to increase nutritional value.
Explanation:
Just took the test.
4. What is the equation for Boyle’s Law? (1pts)
5. Use the equation for Boyle’s Law to explain what happens to the pressure of a compressed gas tank if you remove all of the gas from a 5 L tank and put it into a 1 L tank. Assume that temperature is constant. (2pts)
6. Use the equation for Boyle’s Law to calculate the following. (2pts)
A piston chamber, like a car engine, is filled with 1.00 L of nitrogen gas at 325kPa. The piston is compressed to a volume of 0.25 L.
What is now the pressure inside of the piston chamber? (Assume no gas leaked out).
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5) We know that pressure is inversely proportional to the volume when temperature is constant. So if volume was decreased the pressure would increase. In this situation the gas was shifted to a tank with less volume from 5L to 1L, so the pressure will be increased by a factor of 5x.
6) (325 x 1)/0.25 = 1300kPa is the pressure inside of the piston chamber
The equation for Boyle's Law is: P1V1 = P2V2. According to Boyle's Law, the pressure of a gas is inversely proportional to its volume, assuming that the temperature and amount of gas are constant. The equation for Boyle's Law is: P1V1 = P2V2. Therefore, the final pressure inside the piston chamber after compression is 1,300 kPa.
What is Boyle's Law?Boyle's Law is a gas law that describes the inverse relationship between the pressure and volume of a gas while keeping the temperature and amount of gas constant. It can be expressed mathematically as P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, respectively, and P2 and V2 are the final pressure and volume, respectively.
Hence, the equation for Boyle's Law is: P1V1 = P2V2. According to Boyle's Law, the pressure of a gas is inversely proportional to its volume, assuming that the temperature and amount of gas are constant. The equation for Boyle's Law is: P1V1 = P2V2. Therefore, the final pressure inside the piston chamber after compression is 1,300 kPa.
Learn more about Boyle's Law here.
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What ions are formed when naoh is dissolved in water?.
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Answer:
When NaOH dissolves into water, it dissociates into two ions: a positively charged sodium ion and a negatively charged hydroxide ion (OH-). The increased number of hydroxide ions in the solution increases the concentration of hydroxide ions in the water.
Explanation:
Hope it helps ^^
What are some good puns about elements in chemistry?.
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Answer:
When all the elements die, we Barium!
Ugh, I need to zinc of new Chemistry puns…
Oxygen and Magnesium are going out? O Mg!
Don't trust atoms! They make up everything!
Help!!!! Its a chemistry question Please Take a look at the following chemical reaction and data table provided.
What mass of water is expected to be produced in the reaction above?
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Answer:
The third one is the answer.
In a chemical reaction, two molecules are rearranged to produce two new molecules. Reactant 1 has a mass of 12 g. Reactant 2 has a mass of 23 g. The mass of product 1 is 15 g. The mass of product 2 is _____.
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Based on the law of conservation of mass, the mass of product 2 is 10 g
What is the law of of conservation of mass?The law of conservation of mass explains why matter is constant for any change.
The law of conservation of mass states that matter is conserved in any change.
This means that the sum of mass before and after the change is constant.
In the given reaction:
Sum of reactants = 12 + 23 = 25 g
Mass of product 2 = 25 - 15 = 10 g
Therefore, the mass of product 2 is 10 g.
Learn more about less of conservation of mass at: https://brainly.com/question/15289631
Answer: 20
Explanation: i took the test
Telescopes PLS missing words i've done most of it but stuck on two pls help
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Answer:
A objective
B occular body
C Light Gathering
D Magnifying images
E Improving resolution
F Climate controlled
G Distortion
H Temperature
