Answers
Answer:
I would say A.
Related Questions
300.0 mL of a gas is at a pressure of 5.00 atm. What is the volume of the gas at 2.00 atm?
A. 500 ml
B. 100 mL
C. 750 mL
D. 250 mL
Answers
The uneven heating of the atmosphere by the sun's energy creates
pressure differences.
Which effect is a direct result of this?
formation of clouds
O generation of winds
occurrence of lightning
an increase in humidity
Answers
Answer:
O generation of winds
Explanation:
The uneven heating causes temperature differences, which in turn cause air currents (wind) to develop, which then move heat from where there is more heat (higher temperatures) to where there is less heat (lower temperatures). The atmosphere thus becomes a giant "heat engine", continuously driven by the sun.
Calculate the precise Molar Mass of NH3 and calculate the moles in 50.0
grams.
Answers
Answer: Molar mass of [tex]NH_3[/tex] is 17.00 g and moles in 50.0 grams is 2.94.
Explanation:
Molar mass is defined as the mass in grams of 1 mole of a substance.
S.I Unit of Molar mass is gram per mole and it is represented as g/mol.
Atomic Mass of Nitrogen (N) = 14.00 g
Atomic Mass of Hydrogen (H) = 1.00 g
Molar mass of [tex]NH_3[/tex] = 1(14.00)+3(1.00) g = 17.00 g
According to avogadro's law, 1 mole of every substance contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles and weigh equal to its molecular mass.
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
[tex]\text{Number of moles of }NH_3==\frac{50.0g}{17.00g/mol}=2.94moles[/tex]
Strawberries contain about 15 wt% solids and 85 wt% water. To make strawberry jam, crushed strawberries and sugar are mixed in a 45:55 mass ratio, and the mixture is heated to evaporate water until the residue contains one-third water by mass.
a) Draw and label a flowchart of this process.
b) Do the degree-of-freedom analysis and show that the system has zero degrees of freedom (i.e., the number of unknown process variables equals the number of equations relating them). If you have too many unknowns, think about what you might have forgotten to do.
c) Calculate how many pounds of strawberries are needed to make a pound of jam.
d) Making a pound of jam is something you could accomplish in your own kitchen (or maybe even a dorm room). However, a typical manufacturing line for jam might produce 1500 \mathrm{lb}_{\mathrm{m}} / \mathrm{h}. List technical and economic factors you would have to take into account as you scaled up this process from your kitchen to a commercial operation.
Answers
Answer:
A. The flow diagram is in the attachment
B. Degree of freedom = 0
C. 0.486
D. Energy, power, cost of production
Explanation:
1/3 of water = 0.3333
Sugar = 1-1/3 = 2/3
B.) 45/55 = 9/11 when divided by 5
m1/m2 = 9/11
Cross multiply and make m1 subject of the formula
m1/m2 = 0.818
m1 = 0.818m2 ----1
0.15m1 + m2 = 1 x 0.667
0.15m1 + m2 = 0.667
0.15(0.818m2) = 0.667
1.1227m2 = 0.667
M2 = 0.5941
We put value of m2 in equation 1
M1 = 0.818 x 0.5941
M1 = 0.486
So 0.486 pound of strawberry is what we need in order to make 1 pound of jam.
D. We need great heat for water evaporation
The technical and economic factors would be
1. Energy which is power consumption
2. Cost of production for equipments and materials
3. Power
4. And hazards
what is the pattern of valence numbers on the periodic table?
Answers
Answer:
In general, the number of valence electrons is the same within a column and increases from left to right within a row. Group 1 elements have just one valence electron and group 18 elements have eight, except for helium, which has only two electrons total.
The pressure of a hydrogen balloon is 100.4 kPa. The balloon
floats away into the troposphere where the atmospheric
pressure is 95.6 kPa. What is the positive difference between
the pressure in the balloon and the pressure of the
troposphere in atm?
atm
Answers
Answer:
0.0474 atm
Explanation:
Hello!
In this case, since the pressure inside the balloon is greater than that of the troposphere, the positive pressure difference is given by:
[tex]\Delta P=100.4kPa-95.6\\\\\Delta P=4.8kPa[/tex]
Now, since 101.325 kPa = 1 atm, the pressure in atm would be:
[tex]4.8kPa*\frac{1atm}{101.325kPa}\\\\=0.0474atm[/tex]
Best regards!
how scientists used the scientific method to learn more about how dinosaurs became extinct
Answers
Answer:
they tested the bone age
Explanation:
A self-aldol or crossed aldol reaction REQUIRES a(n) ___________________. Group of answer choices strong acid only a very, very strong base, such as LDA (lithium diisopropyl amide), NaOH or LiOH won't work acid catalyst a strong base such as LiOH or NaOH
Answers
Answer:
[tex]\mathbf{a \ strong \ base \ such \ as\ LiOH \ or \ NaOH.}[/tex]
Explanation:
In the condensation reactions of carbonyl compounds, it is essential to establish the order of events in advance to minimize or suppress the possibilities of self-condensation and the occurrence of cross-condensation, which unfortunately are an obvious threat in these reactions.
Self-condensation:
Any carbonyl compound that has one or more alpha hydrogens, on the carbons adjacent to the carbonyl group, runs the risk of undergoing a self-condensation reaction if the corresponding rigor is not carried out.
Cross-condensation:
Ideally, in the condensation reactions of carbonyl compounds, one of the reacting molecules should quickly enolise, while the other preferably should not have Hα, to ensure that no other by-products are formed.
[tex]\text{To achieve this process;}[/tex] [tex]\text{A self-aldol or crossed aldol requires a strong base such as LiOH or NaOH.}[/tex]
anyone know the name of this structure please and thank you
Answers
Answer:
The graph shown is not a function because points (-1,2) and (-1,0) have the same x value.
Explanation:
1. Fill in the best answer for each of the following: a) ________________________ is the capacity to do work or to supply heat. b) ________________________ is energy stored within a substance due to its chemical composition. c) A reaction that absorbs energy is called a(n) ________________________ reaction. d) The __________________________________ says that in any chemical or physical change, energy can neither be created nor destroyed, only changed in form. e) Thermochemistry is the study of ________________________ that occur during chemical and physical changes.
Answers
Answer:
A. Energy
B. Chemical potential
C. Endothermic reaction
D.The law of conservation of mass
E. Transfers of energy
The fill in the blanks for energy, reaction, and the law of mass is
A. Energy
B. Chemical potential
C. Endothermic reaction
D. The law of conservation of mass.
E. Transfers of energy
What is the law of conservation of mass?The law says that energy can neither be created nor destroyed.
The law was given by Antoine Lavoisier.
Thus, fill in the blanks are: A. Energy
B. Chemical potential
C. Endothermic reaction
D. The law of conservation of mass.
E. Transfers of energy
Learn more about energy
https://brainly.com/question/1932868
Is an element’s flame color a chemical characteristic? Explain.
Answers
Answer:
It's a physical property because color is chemically not significant.
But occurance of a flame is chemical property because combustion takes place
What period of history worsened air and water pollution in the 1800s?
A. The Roaring Twenties
B. The Industrial Revolution
C. The Reformation
D. The Gilded Age
Answers
Answer:
The Industrial Revolution
in the ideal gas law which variable represents the gas constant?
a: T
b: R
c: n
d: V
e: P
Answers
Explanation:
It is represented using the ideal gas equation , or PV = nRT, where P is the pressure in atmospheres, V is the volume in liters, n represents the quantity of particles in the container, T represents the temperature in Kelvin, and R is the ideal gas constant equal to 0.0821 liters atmospheres per moles Kelvin.
can someone solve this?
Answers
Answer:
nah
Explanation:
__________________
When a solution of cesium chloride (CsCl) is subjected to high-speed centrifugation, a stable density gradient is formed. Meselson and Stahl found that when cell contents were subjected to centrifugation with a CsCl solution, a band of DNA formed at the CsCl density that matched the density of the DNA. This technique is called density-gradient centrifugation.
a. True
b. False
Answers
Answer:
True
Explanation:
Messelson and strahl explain the semiconservative existence of DNA replication by using CsCl gradient centrifugation. The hardest would go and rest at the base of the test tube, while the lightest would be at the top, the lightest would find a position between the heavy and the lightest. When the heavy tube is centralized, from a pool of light, bulky and moderate DNA.
This technique is called density-gradient centrifugation. Hence, the given statement is true.
Alls - -0.g) -
AL), |
When this equation is correctly balanced using
smallest whole numbers, what is the coefficient of O
2(g)?
A) 6
B) 2
C) 3
D) 4
Answers
According to the Arrhenius concept, an acid is a substance that ________. According to the Arrhenius concept, an acid is a substance that ________. tastes bitter can accept a pair of electrons to form a coordinate covalent bond is capable of donating one or more H reacts with the solvent to form the cation formed by autoionization of that solvent causes an increase in the concentration of H in aqueous solutions
Answers
Answer: According to the Arrhenius concept, an acid is a substance that causes an increase in the concentration of H in aqueous solutions
Explanation:
According to the Arrhenius concept, an acid is a substance that ionizes in the water to give hydronium ion or hydrogen ion and a bases is a substance that ionizes in the water to give hydroxide ion .
[tex]HA(aq)\rightarrow H^+(aq)+A^-(aq)[/tex]
[tex]BOH(aq)\rightarrow B^+(aq)+OH^-(aq)[/tex]
According to lewis concept , an acid is a substance that accepts electrons and a base is a substance that can donate electrons.
You can calculate distance from work and force with the equation
Answers
Answer:
Summary. Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m).
Explanation:
Hope it helps! Correct me if I am wrong :>
Can you please mark me as brainlest?
Distance is the measure of how far or near an object is placed. It can be referred to as the length between the two points. The distance can be calculated by the formula, [tex]\rm Work = Force \times Distance.[/tex]
What are work and force?Work is the amount of force or energy required by the system to move the thing or the object from its original position to another. It is estimated in joules.
Force is the strength or the power required by the object to change its motion. It is calculated in Newtons.
The distance can be measured by using the work and the force applied by the object to move from initial to the final position as,
[tex]\rm Work = Force \times Distance[/tex]
Therefore, distance can be calculated by work and force.
Learn more about work and force here:
https://brainly.com/question/25191227
Simplifying the expression 3y-4y+3y gives:
Answers
Answer:
the answer is 2y!
Explanation:
3y+3y =6y -4y = 2y
Prometheus is a character that stole fire from the gods in Greek mythology. Which element is named from Prometheus?
Answers
Answer:
Promethium
Pm 61
Discovered by Jacob .A. Marinsky
K2S(s) + MgI2 (aq) -----> ?
Answers
Answer:
MgS + KI = K2S + MgI2
A 20.0 L container at 303 K holds a mixture of two gases with a total pressure of 5.00 atm. If there are 2.00 mol of Gas A in the mixture, how many moles of Gas B are present?
Answers
30 b
19 c
13 D
Honestly I need point right now 6896
I NEED HELP PLS ;-; !!!!
Identify the number of electrons each of the following atoms needs to gain or lose to have a stable outer electron configuration.
a. sodium (Na)
b. strontium (Sr)
c. sulfur (S)
d. astatine (As)
Answers
salt in soap make the soap stronger
Answers
Answer:
yes correct salt hardens soap
what is the percentage of iodine in zinc iodate zn(io3)2
Answers
Answer:
61.131%
This is the percentage of iodine in zinc iodate.
FIRST CORRECT ANSWER GETS 10 POINTS!!!!
Which explains how the nervous system is typically involved in keeping the body in homeostasis?
It processes the environment and sends out signals.
It controls movement and provides structure.
It physically breaks down and absorbs food.
It puts oxygen in the blood, which is essential for life.
Answers
Answer:
Explanation:
It processes the environment and sends out signals.
Chlorophyll allows plants to carry out photosynthesis. There are two forms of chlorophyll:
chlorophyll al ( C55H7205N, Mg) and chlorophyll 6 ( C55H7006N, Mg). What is the
difference in molar mass between these two forms?
Answers
Answer:
Chlorophyll-a/b-carotenoid complexes, known as light harvesting complexes, protect photosynthetic system from strong light. Chlorophylls are insoluble in water due to the absence of polar groups.
Explanation:
Hope this helps :)
Nickel carbonyl decomposes to form nickel and carbon monoxide, like this:
Ni(CO)4(g) → Ni(s)+ 4CO(g)
At a certain temperature, a chemist finds that a 2.6 L reaction vessel containing a mixture of nickel carbonyl, nickel, and carbon monoxide at equilibrium has the following composition:
compound amount
Ni(CO)4 0.597g
Ni 12.7g
CO 1.98g
Required:
Calculate the value of the equilibrium constant for this reaction.
Answers
Answer:
[tex]K=4.07x10^{-4}[/tex]
Explanation:
Hello!
In this case, according to the given chemical reaction, it is possible to set up the equilibrium expression as shown below:
[tex]K=\frac{[CO]^4}{[Ni(CO)_4]}[/tex]
Since the nickel product is solid and is not included. It means that the concentrations at equilibrium of CO and Ni(CO)₄ are:
[tex][CO]_{EQ}=\frac{1.98g}{28.01g/mol} *\frac{1}{2.6L}=0.0272M[/tex]
[tex][Ni(CO)_4]_{EQ}=\frac{0.597g}{170.73g/mol} *\frac{1}{2.6L}=0.001345M[/tex]
Thus, there equilibrium constant for the reaction turns out to be:
[tex]K=\frac{(0.0272)^4}{[(0.001345)}\\\\K=4.07x10^{-4}[/tex]
Best regards!
A student pours 800.0 mL of a 3.000 molar solution of sodium hydroxide into a 2.00 liter volumetric flask and fills the flask up with water. What is the new molarity of the solution?
A) 12.00 M
B) 1.20 M
C) 14.00 M
D) 0.0750 M
Answers
Give me some examples of why is it important to understand how ocean currents flow.
Answers
Answer:
By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate. Ocean currents are also critically important to sea life. They carry nutrients and food to organisms that live permanently attached in one place, and carry reproductive cells and ocean life to new places.
Explanation:
:)