Answers
Answer:
D.
Explanation:
The hypothesis was that speed would increase with the addition of mass from passengers. The data shows that when passengers/mass are added, speed decreases.
Related Questions
Type of introduction
Answers
Answer:
Five Types of Introductions.
“Inquisitive” Explain why your subject is important, curious, or interesting.
“Paradoxical” Explain what aspects of your subject seem improbable. ...
“Corrective” Explain how your subject has been misunderstood or misrepresented by others. ...
Which is a general property of cell membranes? a) Membranes contain more lipid than protein. b) Membrane proteins have a polar head and a non-polar tail. c) Membrane lipids are amphipathic. d) Membranes contain covalent bonds between fatty acids
Answers
Answer:
c) Membrane lipids are amphipathic.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles found in all living organisms such as trees, birds, and bacteria include; nucleus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, cytoskeleton, vesicles, golgi apparatus, and cell membrane.
Cell membrane is the wall of a cell and typically controls what leaves and enters the cell.
A general property of cell membranes is that membrane lipids are amphipathic. All the lipid molecules found in the cell membrane are amphipathic or amphiphilic, which means that they are "water loving" (hydrophilic) with a polar end or "water fearing" (hydrophobic) with non-polar end. Thus, membrane lipids have an end that's soluble in water (polar) while the other end is soluble in fat (non-polar).
The membrane lipids are amphipathic.
• In the majority of cell membranes in animals, lipids, that is, fatty molecules forms about 50 percent of the mass of the cell.
• All the molecules of lipid in a cell membrane are amphipathic, that is, they possess a polar end or hydrophilic and non-polar end or hydrophobic end.
• The phospholipids are the most abundant lipids found in the cell membrane.
• They have a polar head group and two hydrophobic hydrocarbon tails.
• It is the amphipathic nature and shape of the molecules of lipids, which makes them to produce bilayers spontaneously.
Thus, correct answer is option c, that is, membrane lipids are amphipathic.
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how many molecules are there in 18.5 moles of water
Answers
Answer: The answer is 18.01528.
Explanation:
As a change of state takes place, heat and
temperature
Answers
How many valence electrons are there in Se atom?
Answers
Answer:
4 valence electrons
Despite the fact that the word silicon has a ubiquitous affiliation with all things electronic, Si itself is not a good electrical conductor. It has 4 valence electrons, meaning that filling its outer shell it can form a very strong lattice with 4 neighboring Si atoms-with no un-bonded electrons remaining
Answer:
The numer of valence electrons is defined as the number of electrons present in the outer most shell of the atom.So, in the case if selenium, there are 6.
A. The potential energy of the products is greater than the potential energy of the reactants
B. The potential energy at point A represents the activation energy
C.The potential energy of the products is lower than the potential energy of the reactants
D. The potential energy at point C represents the activation energy
Answers
Answer: im pretty sure it is b but a is also good i going to be honest it a multi chose and i ant good at those
Explanation:
Convert 9.5 x 10^23
Answers
Convert it into what?
A hydrochloric acid solution contains 36 percent HCl by mass. Calculate its
molality
Answers
M=moles of solution / kilograms of solvent
Mass %= (mass solute/mass solution)x100%
Assume 100g of solution
Find moles of solute
Mass solute = (mass %/100%)mass solution
=(36%/100)100g=36 gHCL
36 gHCL 1 mol HCL/36.458 gHCL= 0.987molHCL
36% HCL by mass 100 g solution
36g HCL 0.987Mol HCL
Molarity=moles solute/kg solvent
Find kg solvent
Mass solution = mass solute + mass solvent
Mass solvent = mass solution - mass solute
= 100 g-36=64 g solvent
64 g solvent = 1 kg solvent/1000 g solvent = 0,064 kg solute
Molarity= molHCL/0.064 kg solvent
=0.987/0.064
=15.42 mHCL
Which of these is NOT a way to express probability?
A .1 in 4
B. 50 percent
c. 3/4
D. 25
Answers
Answer:
Option A.
Explanation:
Probability is expressed in percent, fraction or in whole numbers
The only one that does not express a probability is 25.
A one in four chance, a fifty percent chance, a three in four chance. These all could be probabilities.
25 doesn't express a probability.
If this is incorrect, please, don't refrain to tell me.
does carbon dissolve in water
Answers
Answer:
yes
Explanation:
CO2 is soluble because water molecules are attracted to these polar areas. The bond between carbon
How many grams of potassium chloride are in 4.25 x 1023 molecules?
Answers
Do a quick conversion: 1 moles Potassium Chloride = 74.5513 gram using the molecular weight calculator and the molar mass of KCl.
Between what time interval was the object moving the slowest?
Between what time interval was the object moving the fastest
Answers
Answer:
from 1 to 2 hour the object was moving the slowestfrom 4 to 5 hours the object was moving the fastest3) Which element has the lowest electronegativity value?
A) F
B) Fr
C) Cr
D) Cl
Answers
Answer:
ur mom jk i would say fr
Explanation:
Q1 - How would you balance the following equation: N₂ + O₂ N₂O₅
A: N₂ + 5 O₂ N₂O₅
B: 2 N₂ + 5 O₂ 2 N₂O₅
C: N₂ + 5 O₂ N₂2O₅
D: N₂ + O₂ N₂O₅ (already balanced)
Q2 - In the reaction, HCl + NaOH NaCl + H₂O, what is/are the reactant(s)?
A: HCl only
B: HCl and NaOH
C: NaCl only
D: HCl and NaCl
Answers
nswer:
For Q1 its B!
Explanation:
cuz I'm smart dw.
kinetic energy is the energy of ____ things
Answers
Answer:
moving things
Explanation:
kinetic energy is the energy of moving things
PLEASE I WILL BRAINLIST YOU
1. A student predicted the reaction between hydrogen and oxygen gas would yield 125 mL of water. However, after measuring the water formed in the reaction, the student determined that only 110 mL of water was actually formed. Determine the percent yield for this reaction.
A. 75%
B. 88%
C. 100%
D. 113%
HINT: 96 yield= (actual yield/ expected yield ) X 100%
Answers
Answer:
B. 88%
Explanation:
percent yield is the actual yield divided by the theoretical (predicted) yield, then multiplied by 100 to get a percentage.
110/125 = 0.88
0.88 x 100 = 88%
In chemistry, the term yield also known as the reaction yield represents the measure of the quantity of the moles of a product formed in the reaction to the reactant used. The correct option is B.
What is percent yield?The amount of the product actually made compared with the maximum calculated yield is defined as the percent yield. It can also be known as the ratio of the actual yield to the theoretical yield.
The ideal quantity of the product is called the theoretical yield and it is obtained by working a stoichiometry problem. The actual amount of the product formed gives us the actual yield.
The equation of the percent yield is given as:
%yield = Actual yield / Theoretical yield × 100
110 / 125 × 100 = 0.88 × 100 = 88%
Therefore the percent yield of the reaction is 88%.
Thus the correct option is B.
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- What is the percent yield if your actual yield is 39.78g and your theoretical
yield was 47.84 g?
Answers
A bee buzzes inside a flower to drink some nectar. While there it touches the stamen. Later the bee goes to another flower and comes into contact with the flower's pistil. Which process of reproduction is this helping with?
Answers
QUESTION
A bee buzzes inside a flower to drink some nectar. While there it touches the stamen. Later the bee goes to another flower and comes into contact with the flower's pistil. Which process of reproduction is this helping with?
ANSWER
The bee is helping in pollination which is an important event in case of sexual reproduction in flowering plants.
Pollination is a part of pre-fertilisation ( gamete transfer ).
Pollination by insects ( most commonly bees ) is known as Entamophily
Determine the moles of chlorine needed to react with 38.9 of iron (III) chloride.
2 Fe+3 CI, - 2 Feci
Answers
Answer: 0.360 moles
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} FeCl_3=\frac{38.9g}{162.2g/mol}=0.240moles[/tex]
The balanced chemical reaction is:
[tex]2Fe+3Cl_2\rightarrow 2FeCl_3[/tex]
According to stoichiometry :
2 moles of require = 3 moles of
Thus 0.240 moles of [tex]FeCl_3[/tex] will require=[tex]\frac{3}{2}\times 0.240=0.360moles[/tex] of [tex]Cl_2[/tex]
Thus 0.360 moles of chlorine needed to react to produce 38.9 of iron (III) chloride.
The reaction between sodium and chlorine that forms table salt is shown
_Na(s) + Cl2 (g) → _NaCl (3)
What coefficient should be added to the blanks to balance the equation?
А.
2
В.
1
2.
2
Answers
Answer: 2 Na (s) + Cl(g) -> 2 NaCl (s)
Explanation:
How many moles of aluminum oxide are produced by reacting 54 g of aluminum with oxygen gas?
4Al(s) + 30 2(g) → 24/203(s)
A) 1.0 mol
B) 3.0 mol
C) 4.0 mol
D) 2.0 mol
Answers
The sample of oxygen which represents the greatest mass is
A.) mole
B.) gram
C.) molecule
D.) liter
Answers
Answer:
A
Explanation:
A sorry if not correct
The overall electrical charge on a stable element is_____
Answers
Answer: the answer is 0
Explanation:A stable atom has a net charge of 0. In other words, it has an equal number of protons and electrons. The positive protons cancel out the negative electrons.
Which of your recipes was the best?
Trial 1
Trial 2
Trial 3
Why is this your best recipe? What criteria did you meet?
Answers
Answer:
trial 1
Explanation:
trust
In which ways are evaporation and condensation similar?
Both cause decrease in air temperature
Both cause increase in air temperature
Both are caused by the warming of the atmosphere
Both are caused by changes in heat energy
Answers
Answer:
Both are caused by changes in heat energy
Explanation:
When air gets hotter water will evaporate, when air gets cooler water will condensate.
Phenotype is the organism's physical appearance while
is the organism's genetic make-up for any given
trait,
Genotype
Gender
OOOO
Genome
Genetic file
Answers
1. Which of the following elements have atoms with a full shell of
valence electrons (1 point)
a. Lithium
b. Oxygen
c. Hydrogen
d. Neon
Answers
Answer:
The answer is neon.
Explanation:
Hope this helped Mark BRAINLEST!!!
If you can solve both
Will mark brainly
ASAP
Answers
Answer:
The main function sis the 2nd one and the substance provides the first 1.
Explanation:
Hope you finish the rest on your own, have fun!
Consider the equation for the formation of a kidney stone.
2Na3 PO4 (aq) + 3CaCl2 (aq) =
Ca3(PO4)2 (s) + 6NaCl (aq)
Is each reactant bonded ionically or covalently?
How do you know?
Answers
Answer:
Ionically, because they are ionic compounds
How much force is required to accelerate a 22 kg mass at 6 m/s2?s
Answers
Answer:
F=132k.gm/s^2Explanation:
F=m×af=22k.g×6m/s^2f=132k.gm/s^2