Answer:
mass of sucrose = 17.115 grams
Explanation:
Given that:
mass = 2000 grams
molar mass of sucrose = 342.3 g/mol
2.5% of the sucrose soltion.
Let assume we are given 1 M of the sucrose solution;
2.5% of 1 M = 0.025 M
∴
Molarity = ( mass/molar mass )(1000/V)
mass = (0.025 * 342.3 * 2000)/(1000)
mass of sucrose = 17.115 grams
Steven placed an ice cream scoop under hot water before scooping ice cream. Which describes how the ice cream scoop was affected
Answer: Okay so i don't know how i can explain this but.. OK so Steven placed an ice cream scoop right? and put it under hot water so i would say it would make the ice cream scoop hot? and then using it to scoop the ice cream i could say it would be a melting affection i think
Explanation:
im am so sorry pls forgive me is i am wrong i tried my best so at least give me a like for effort.. i hope u have a great day :)
What is the universe made of? Astronomers face an embarrassing conundrum: they don't know what 95% of the universe is made of.
Answer:
I think u understand this answers
find the pH of
2.1 x 10-3 [HCI]
Answer: pH = 2.68
Explanation: pH = - log[H3O^+] .
HCl reacts with water : HCl + H2O -> Cl^- + H3O^+
So [H3O^+] = c(HCl) = 0.0021 M
pH = - log(0.0021) = 2.68
49. What is the Atomic Mass of Magnesium on the Reaction Side of this chemical equation? Mg + Cl2 MgCl2 ? g 719 95.3g
Answer:
[tex]molar \: mass = 24g[/tex]
Which shows a triglyceride?
Answer:
A
Explanation:
A triglyceride (TG, triacylglycerol, TAG, or triacylglyceride) is an ester derived from glycerol and three fatty acids (from tri- and glyceride). Triglycerides are the main constituents of body fat in humans and other vertebrates, as well as vegetable fat.
The structure of option A shows a triglyceride.
What is triglyceride?Triglycerides are a kind of fat present in the blood. Triglycerides are the types of stored fats, which are not in use currently.
The structure of triglyceride is TRI esters containing glycerol bound to three fatty acid molecules.
Thus, the correct option is A.
Learn more about triglyceride
https://brainly.com/question/13840067
#SPJ2
A ______ is a hole where the steam looks a lot like a smoke
A DRY ICE is hole were the steam looks a lot a smoke
What are alleles? Are theys ame or different
Answer:
Kind of like DNA or a part of DNA
Explanation:
They are what make you a person, no they aren't the same
Is vinegar acidic, alkaline or neutral?
Answer:
Substances over 7 are categorized as basic, with 7 being the neutral point. Water has a pH level of 7. Substances with pH levels under 7 are categorized as acidic. Vinegar is acidic.
Explanation:
You can change it a little if you want. Hope this helps!
Vinegar is acidic. The only vinegar that has alkaline is apple cider vinegar, but all types of vinegar are acidic.
The forces between ________ are examples of electric forces.
A.
charged particles
B.
neutrons
C.
masses
D.
photons
Answer:
The answer would be charged particles.
Explanation:
Electric force exists as one of the most fundamental forces in the universe, it occurs between all charged particles.
please I need help with this it is A(n)_______ is made of the same_______all the way through.
Answer:
hi the ans is A.
..............
Explain how to identify a conjugate acid and a conjugate base in an acid base reaction.
Answer:
- Identify the acid and base in the reaction.
- What is left of the base after the reaction is known as the conjugate acid, while what is left of the acid after the reaction is known as the conjugate base.
Explanation:
Types of acids and bases:
When we are looking at conjugate acid and base, the type of acid and base we should focus on are Brønstead acid and base.
Brønsted acid: proton donor
Brønsted base: proton acceptor
Do note that proton here refers to hydrogen ion, H⁺.
Other types of acids and bases includes arrhenius acid/base and Lewis acid/base.
Definition:
Conjugate acid is what remains of the acid when a Brønsted acid donates a proton, while conjugate base is the newly formed protonated species when a Brønsted base accepts a proton.
Example:
Let's look at an example of a Brønsted acid-base reaction:
NH₃(aq) +H₂O(l) ⇌ NH₄⁺(aq) +OH⁻(aq)
Here, the base is NH₃ and the acid is H₂O.
NH₄⁺ is the conjugate acid, while OH⁻ is the conjugate base.
Note:
For a Brønsted acid- base reaction, whether a substance behaves as an acid or a base depends on what it is reacting with. Although H₂O behaves as an acid in this example, it behaves as a base when reacting with HCl.
3. How many grams of aluminum can be heated from 90°C to 120°C if 500 J of heat energy are applied?
(c = 0.900 J/g °C)
We are given:
Initial Temperature = 90°c
Final Temperature = 120°c
Heat applied(ΔH) = 500 Joules
Specific heat(c) = 0.9 Joules / g°C
Mass of Aluminium(m) = ?
Change in temperature:
ΔT = Final temp. - Inital Temp.
ΔT = 120 - 90
ΔT = 30°c
Calculating the mass:
We know the formula:
ΔH = mcΔT
replacing the values:
500 = m(0.9)(30)
500 = m(27)
m = 500/27
m = 18.52 grams
How many grams are in 2.0 x 10-5 moles of uranium?
Which two combinations will give you a TALL plant?
TT with Tt
or TT with TT
would give a tall plant
how many electrons are in a titanium atom
Answer:
2, 8, 10, 2
Explanation:
Answer:
2, 8, 10, 2
Explanation: Titanium/Electrons per shell
please i need help really quickly on this. thank you
Answer:
the error could have been the fact that the unit for volume wasn't changed from cm³ to dm³
hence the calculation error
the solution to this would be first dividing the volume by 1000 to get that same amount in dm³ which is the standard unit to be used for volume-density calculations
What are the reactants and products of a redox reaction, neutralization reactions, and precipitation reactions?
Answer:
Precipitation reactions are ones in which at least one of the reactants is in the aqueous phase (i.e., dissolved in water), and a solid forms on the product side which was not present on the reactant side. If all the reactants are solid, then a solid product forming should not be called a precipitate. To be called a precipitate, an insoluble product must form from within solution, either from a solid and solute interacting, or from an interaction strictly between solutes.
Explanation:
If I have 18 liters of gas at a pressure of 88 atm, what will be the final pressure of the gas if the volume of the gas is decreased to 12 liters under constant pressure ? Show calculations.
Answer: You meant in constant temperature?
Because temperature is not mentioned at the beginning.
I suppose temperature remains constant, otherwise
there is no enough data for solving the problem
Explanation: According Boyle´s law in constant temperature
pV = constant. So p1V1 = p2V2 and pressure p2 = p1V1 /V2
= 88 atm · 18 l / 12 l = 132 atm.
If I have 18 liters of gas at a pressure of 88 atm, the final pressure of the gas if the volume of the gas is decreased to 12 liters under constant pressure is 132atm.
HOW TO CALCULATE PRESSURE?The pressure of gas at constant temperature can be calculated using Boyle's law equation as follows:
P1V1 = P2V2
Where;
P1 = initial pressure (88atm)P2 = final pressure (?atm)V1 = initial volume (18L)V2 = final volume (12L)The final pressure of the gas can be calculated as follows:
88 × 18 = 12 × P2
1584 = 12P2
P2 = 1584 ÷ 12
P2 = 132atm
Therefore, have 18 liters of gas at a pressure of 88 atm, the final pressure of the gas if the volume of the gas is decreased to 12 liters under constant pressure is 132atm.
Learn more about Boyle's law at: https://brainly.com/question/1437490
Question 3 of 20 :
Select the best answer for the question.
3. The atomic number of niobium (Nb) is 41. What's the electron configuration for Nb?
O A. [Ar] 3s 4p?
O B. [Kr] 5s? 5p
O C. [Kr] 4d45s
O D. (Ne) 4d
Answer:
[Kr] 4d4 5s1
Explanation:
Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. The chemical symbol for Niobium is Nb. Neutron Number and Mass Number of Niobium Mass numbers of typical isotopes of Niobium are 93.
Name of Element : Niobium
Atomic Weight : 92.9
Atomic Number : 41
Group : Transition Elements
Electron Configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d3
The state of matter of a substance is a physical property. A. True B. False
Answer:
I THINK IT IS TRUE BECAUSE THEY ERE FIRST FOUND TO DEMOCRITUS ARISTOTLE AND PLATO THE ROMANS AND GREEK CHEMISTS .
Explanation:
Burning fossil fuels provides a main source of energy in many parts of the world. Which is a disadvantage of using fossil fuels?
This equation is not balanced. Click on the coefficient we should change first.
help
please
Describe the De Borglie's hypothesis
Answer:
The De Broglie hypothesis proposes that all matter exhibits wave-like properties and relates the observed wavelength of matter to its momentum. After Albert Einstein's photon theory became accepted, the question became whether this was true only for light or whether material objects also exhibited wave-like behavior.
What function is most affected if the sepal of a flower is damaged by air pollution?
Answer:answer in explanation try to understand dear
Explanation:Air pollutants have a negative impact on plant growth, primarily through interfering with resource accumulation. Once leaves are in close contact with the atmosphere, many air pollutants, such as O3 and NOx, affect the metabolic function of the leaves and interfere with net carbon fixation by the plant canopy.
II. The student then takes a 1.00 M stock
solution of table sugar
(sucrose, C12H22011) and mixes 0.305 L
of stock solution with additional
distilled water to create a dilute
solution with a total volume of 1.25 L.
• Explain how the student can
determine the molarity of the
resulting solution. Show a valid
calculation for the final molarity.
Answer:
0.244 M.
Explanation:
From the question given above, the following data were obtained:
Molarity of stock solution (M₁) = 1 M
Volume of stock solution (V₁) = 0.305 L
Volume of diluted solution (V₂) = 1.25 L
Molarity of diluted solution (M₂) =?
The molarity of the diluted solution can be obtained by using the dilution formula as illustrated below:
M₁V₁ = M₂V₂
1 × 0.305 = M₂ × 1.25
0.305 = M₂ × 1.25
Divide both side by 1.25
M₂ = 0.305 / 1.25
M₂ = 0.244 M
Thus, the molarity of the diluted solution is 0.244 M
This equation is not balanced. Click on the coefficient we should change first.
help ASAP
Answer: The coefficient we should change first is for [tex]NO_{3}[/tex].
Explanation:
The given reaction equation is as follows.
[tex]Al + Ni(NO_{3})_{2} \rightarrow Al(NO_{3})_{3} + Ni[/tex]
Here, number of atoms present on reactant side are as follows.
Al = 1Ni = 1[tex]NO_{3}[/tex] = 2Number of atoms present on the product side are as follows.
Al = 1Ni = 1[tex]NO_{3}[/tex] = 3To balance this equation, multiply Al by 2 and [tex]NO_{3}[/tex] by 3 on reactant side. Also, multiply [tex]Al(NO_{3})_{3}[/tex] by 2 and Ni by 3 on the product side.
Hence, the equation can be rewritten as follows.
[tex]2Al + 3Ni(NO_{3})_{2} \rightarrow 2Al(NO_{3})_{3} + 3Ni[/tex]
Now, number of atoms present on reactant side are as follows.
Al = 2Ni = 3[tex]NO_{3}[/tex] = 6Number of atoms present on product side are as follows.
Al = 2Ni = 3[tex]NO_{3}[/tex] = 6Since, the atoms on both reactant and product side are same. Hence, it is now a balanced chemical equation.
Thus, we can conclude that the coefficient we should change first is for [tex]NO_{3}[/tex].
What sort of fossils would be expected to be found in Antarctica from more recent times, after it had moved much closer to the South Pole?
Answer:
Antarctic Peninsula, is one of the most important fossil sites on Earth.
hope this helps you ☺️☺️
Fossils that would be expected to be found in Antarctica from more recent times, after it had moved much closer to the South Pole is Antartica peninsula.
What are fossils?Fossils are the preserved remains, impression, or trace of any once-living thing from many years ago. Examples of the fossils include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants.
There are four different types of fossils-
Mold fossils
Cast fossils
Trace fossils or Ichnofossils
True form fossils
Imprints, tracks, and trails can also become fossilized and are called Trace fossils. Dinosaur footprints or worm burrows are the examples.
Living things when get decomposed from the so many years ago and become dirt and rocks are fossils.
Therefore, Fossils that would be expected to be found in Antarctica from more recent times, after it had moved much closer to the South Pole is Antartica peninsula.
Learn more about Fossils, here:
https://brainly.com/question/14988327
#SPJ3
27.5 mL of a 0.235 M potassium hydroxide solution is required to completely react with 35.0 mL of a sulfuric acid solution. Provide the balanced chemical equation for this reaction and determine the concentration of the sulfuric acid solution.
Answer: The balanced equation is [tex]2KOH + H_{2}SO_{4} \rightarrow K_{2}SO_{4} + 2H_{2}O[/tex] and the concentration of the sulfuric acid solution is 0.184 M.
Explanation:
Given: [tex]V_{1}[/tex] = 27.5 mL, [tex]M_{1}[/tex] = 0.235 M
[tex]V_{2}[/tex] = 35.0 mL, [tex]M_{2}[/tex] = ?
Formula used to calculate the concentration of the sulfuric acid solution is as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]
Substitute the values into above formula as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}\\0.235 M \times 27.5 mL = M_{2} \times 35.0 mL\\M_{2} = \frac{0.235 M \times 27.5 mL}{35.0 mL}\\= 0.184 M[/tex]
The given chemical equation for given reaction is as follows.
[tex]KOH + H_{2}SO_{4} \rightarrow K_{2}SO_{4} + H_{2}O[/tex]
Number of atoms on reactant side are as follows.
K = 1H = 2[tex]SO_{4}[/tex] = 1O = 1Number of atoms on product side are as follows.
K = 2H = 2[tex]SO_{4}[/tex] = 1O = 1To balance this equation, multiply KOH by 2 on reactant side and multiply [tex]H_{2}O[/tex] by 2. Hence, the equation can be rewritten as follows.
[tex]2KOH + H_{2}SO_{4} \rightarrow K_{2}SO_{4} + 2H_{2}O[/tex]
Now, number of atoms on reactant side are as follows.
K = 2H = 4[tex]SO_{4}[/tex] = 1O = 2Number of atoms on product side are as follows.
K = 2H = 4[tex]SO_{4}[/tex] = 1O = 2Since, there are same number of atoms of both reactant and products. Therefore, the equation is now balanced.
Thus, we can conclude that the balanced equation is [tex]2KOH + H_{2}SO_{4} \rightarrow K_{2}SO_{4} + 2H_{2}O[/tex] and the concentration of the sulfuric acid solution is 0.184 M.
Someone please help!
Answer:
Warm Springs temperature
Explanation:
can someone please do this for me
2K(s) + F₂(g) --> 2KF(s)
The physical stare of potassium is solid(s) and that of potassium fluoride is solid(s) so, s will be put on both the blanks.
Now, In order to balance florine, we will put 2 for potassium floride, afterwards florone will be 2 on both side of equation but now potasium will become unbalnced so, we will put 2 for potassium. Thus, both sides of the equation will be balanced.
--------------------------------------------------------
P.S- Sorry, If I fail in properly explaining it to you.