Answer:
The Gulf Stream
Explanation:
hope dis helps <3
When you have a molecule that has one side with access to electrons, and one side that is deficient in electrons, a(n) ______ forms.
A. Bonds
B. Ion
C. Dipole
D. Charge
Only respond if you actually know the answer!!!
Answer:
C. Dipole
Explanation:
When a molecule is unevenly charged but overall neutral, for example, one atom has a negative charge, and one has a positive charge, they balance each other out when they bond and are known as a polar molecule. Dipole just means 2 poles (positive and negative).
Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many g of hydrogen gas are formed when 125.0 g of sodium are added to water?
2Na + 2H2O → 2NaOH + H2
Hey I'm Chloe can you Help me, Thank you :)
What pigment, only present in plants, makes photosynthesis possible?
Answer:
la photosintesis viene de la clorofila de la planta
15g of sugar and 10g of water are measured separately. The sugar is dissolved in the water. What will
the mass of the solution be?
Answer: a) No, both are different.
b) Ramesh- 9.9%
Sarika - 10%
Explanation:
According to the solution prepared by Ramesh,
Mass of sugar he took (Solute) = 10 g
Mass of water he took (Solvent) = 100 g
Thus Mass % of the solution =
According to the solution prepared by Sarika,
Mass of sugar she took (Solute) = 10 g
Mass of Solution she took = 100 g
Thus Mass % of the solution =
Explanation:
The gravitational force between two masses is proportional to
A.
the difference between the masses.
B.
the first mass divided by the second mass.
C.
the product of the masses.
D.
the sum of the masses.
Answer:
D.
the sum of the masses.
Explanation:
During the combustion of methane (CH4), one mole of methane gas combines with two moles of oxygen gas (O2) to produce one mole of carbon dioxide gas (CO2) and two moles of water vapor. Which of the following chemical equations correctly represents the combustion of methane described above
Answer:
CH4(g) +2O2____ CO2(g) +2H2O (l)
Facts about flooding
Answer:
No region is safe from flooding. All 50 states are subject to flash floods.[1]
Flash floods can bring walls of water from 10 to 20 feet high.[2]
A car can be taken away in as little as 2 feet of water.[3]
To stay safe during a flood, go to the highest ground of floor possible. If your skin comes in contact with flood water, make sure to wash it with soap and disinfected water because the contents are unknown.[4]
Flooding is caused by spring thawing (snow and frozen grounds melting in the spring), heavy rains, snow melt runoffs, flash floods, and mudflows.[5]
Floods are the most widespread natural disaster aside from wildfires. 90% of all U.S. natural disasters declared by the President involve some sort of flooding.[6]
In preparation for a flood, it is important to stock up on first aid items, non-perishable foods, 3 gallons of water per person for 3 days, battery operated radio for weather reports, extra batteries, personal hygiene necessities.[7]
Based on Floodsmart, a 2,000 square foot home undergoing 12” of water damage could cost more than $50,000.[8]
Since flood damage is almost never covered by homeowners insurance, flood insurance is important for people living in high-risk flood zones.[9]
To stay safe during a flood, go to the highest ground of floor possible. If your skin comes in contact with flood water, make sure to wash it with soap and disinfected water because the contents are unknown.[10]
Communities particularly at risk are those located in low-lying areas, near water, or downstream from a dam.[11]
A solution of 1.8274g of a polypeptide in 274mL of a aqueous solution has an osmotic pressure at 31.40 degrees C of 2.012 mmHg. The approximate molecular weight of this polymer is _____ g/mol.
Answer: Hence, the approximate molecular weight of the poymer is 64106 g/mol
Explanation:
[tex]\pi=CRT[/tex]
where,
[tex]\pi[/tex] = osmotic pressure of the solution = 2.012 mm Hg = 0.0026 atm
i = Van't hoff factor = 1 (for non-electrolytes)
Mass of solute (polypeptide) = 1.8274 g
Volume of solution = 274 mL
R = Gas constant = [tex]0.0821Latm/Kmol[/tex]
T = temperature of the solution = [tex]31.40^0C=(273+31.40)K=304.4K[/tex]
Putting values in above equation, we get:
[tex]0.0026=\frac{1.8274 g\times 1000}{M\times 274ml}\times 0.0821\times 304.4[/tex]
[tex]M=64106g/mol[/tex]
Hence, the approximate molecular weight of the poymer is 64106 g/mol
How many moles of water are there in 45 g of water?
a) 1.0 moles
b) 1.5 moles
c) 2.0 moles
d) 2.5 moles
Answer:
d
Explanation:
can you help me with my question In the extended simile of the underlined passage from Paragraph 15 of "A Wagner Matinee," the narrator makes an observation about the soul that aring rokol been A. it is like a strange moss on a dusty shelf that, with excruciating suffering, can wither and die y for I the be B though after excruciating suffering it may seem to wither, the soul never dies, C. excruciating, interminable suffering that goes on for half a century can kill the soul.
the firm outer covering of a plant cell is a
A.cell body
B.cell membrane
C.cell wall
d.cell structure
Answer:
it is the cell wall :)
Explanation:
Answer: The answer is C
What is this what is this
Answer:Attemted Failed
Maybe try to search
In a different way like:
what is the ingredient of cake
Instead of
how to make Cake
if water is added to a 0.70 molar solution of CuSO4 what will change
A. molarity will increase
B. Molarity will decrease
C. the amount of CuSO4 will decrease
D. No change in molarity or amount of salute
Answer:
B. Molarity will decrease
Explanation:
Molarity is one of the measures of the molar concentration of a solution. It is calculated by dividing the number of moles of the solute by the volume of the solvent. This means that the higher the amount of solute in relation to the volume of solvent, the higher the molarity of that solution.
In essence, adding water to a solution dilutes it i.e it increases the solvent's volume in relation to the solute, causing the molarity to decrease. In a nutshell, diluting a solution (by adding water or more solvent) causes the molarity of such solution to decrease. For example, if water is added to a 0.70 molar solution of CuSO4, the molarity of the solution will DECREASE.
What is the definition of an Arrhenius acid?
Answer:
B. An Arrhenius acid increases [OH–] in the Solution
Answer:
An Arrhenius acid increases [H+] in the solution.
Explanation:
i just took the test and this was the answer-
What do the Beluga and the sea duck have in common in the food web?
Answer: they both eat fish
Explanation:
How many moles are in 75.46 g of sulfuric acid?
[H2SO4(aq)]?
Answer:
Answer:
3 3 4
2 4
2 5
4
3 3 4
2 4
2 5
4
(( ) )) 143 /
( ) 98 /
( ) 108 /
( ) 474.8 /
484.25 (( ) ) 3.39
143
75.46 ( ) 0,77
98
270 ( ) 2,5
108
546 ( ) 1,15
474,8
m
M
M NH PO g mol
M H SO g mol
M N O g mol
M SnF g mol
NH PO mol
H SO mol
N O mol
SnF mol
According to the mole concept, there are 0.77 moles in 75.46 g of sulfuric acid.
What is a mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.
Number of moles is calculated as, mass/molar mass=75.46/98=0.77 moles.
Thus, there are 0.77 moles in 75.46 g of sulfuric acid.
Learn more about moles,here:
https://brainly.com/question/26416088
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Which best explains what happens to the carbon atoms in carbon dioxide during photosynthesis?
A They are incorporated into molecules of sugar.
B They are transformed into oxygen atoms.They are transformed into oxygen atoms.
C They are broken down into subatomic particles.They are broken down into subatomic particles.
D They are destroyed to release energy.They are destroyed to release energy.
c i think
Explanation:
if it's not look it up
If 0.700 moles Ag is reacted with 10.0 g S, is sulfur or aluminum the limiting reactant?
Answer: [tex]S[/tex] is the limiting reagent
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} S=\frac{10.0g}{32g/mol}=0.3125moles[/tex]
[tex]\text{Moles of} Ag=0.700moles[/tex]
[tex]2Ag+S\rightarrow Ag_2S[/tex]
According to stoichiometry :
1 mole of [tex]S[/tex] require = 2 moles of [tex]Ag[/tex]
Thus 0.3125 moles of [tex]S[/tex] will require=[tex]\frac{2}{1}\times 0.3125=0.6250moles[/tex] of [tex]Ag[/tex]
Thus [tex]S[/tex] is the limiting reagent as it limits the formation of product and [tex]Ag[/tex] is the excess reagent.
Which is most often used to destroy bacteria?
HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP HELP
prove you understand the development of democracy in Athens and how it influenced the government of the United States.
For this assignment, you will write two paragraphs:
In paragraph one, you will explain at least three ways that democracy in Athens influenced the United States government.
In paragraph two, you will explain at least three differences between Athenian and American democracy.
Answer:
The original U.S. voting system had some similarities with that of Athens. In Athens, every citizen could speak his mind and vote at a large assembly that met to create laws. Citizens were elected to special councils to serve as organizers, decision-makers, and judges. The Greek idea of democracy was different from present-day democracy because, in Athens, all adult citizens were required to take an active part in the government. ... This form of government is called direct democracy. The United States has a representative democracy.
Characteristics of a substance that describe its' ability to change into a different substance are called?
Why are most anions basic in H2O? Give formulas of four anions that are not basic.
Answer:
The anions that can act as bases (conjugate bases of weak acids) have the capability to hydrolyse water and produce OH− ions. Cl−, Br−NO−3, SO2−4 are all conjugate bases of strong acids that don't have the capability to hydrolyse water and so they aren't basic.
Explanation:
Help please for this problem.
SOMEONE HELP ME ASAP!!!
Answer:
A
Explanation:
Question number 12 I need help
Answer: Its B.
Explanation:
i cant quite explain
In words, how does the volume change when the temperature of an object changes?
Which statements correctly describe the human skeletal system?
O A. The skeletal system produces red blood cells.
B. Once made, bones become solid structures.
OC. Adult bones are made of non-living materials only.
D. There are many kinds of joints.
OE. Joints are bones that can bend.
Answer:
A
Explanation:
Well, the human skeletal system produce red blood cells into and for the body.
pls pls help i need this soo bad ill give brainliest
Answer:
Mycelial threads
Explanation:
Through the mycelium threads, a fungus or in this case a mushroom absorbs nutrients from its environment. It does this in a two-stage process. First, the hyphae secrete enzymes onto or into the food source, which break down biological polymers into smaller units such as monomers. Mycelium is an important food source for many soil invertebrates.
Answer:
wassssssssssssssssap
Explanation:
Los termómetros de mercurio no pueden medir temperaturas menores a -30oC debido a que a esa temperatura el Hg
se hace pastoso. ¿Podrías indicar a qué temperatura Fahrenheit y Kelvin corresponde?
Answer:
243.15 K y -22 F
Explanation:
Para convertir la temperatura desde grados Celsius (°C) a kelvin (K) se debe sumar 273.15 K:
K = °C + 273.15 = -30°C + 273.15 K = 243.15 K
Para convertir desde grados Celsius (°C) a Fahrenheit (F), se multiplica por 9/5 y se suma 32, como sigue:
F = (9/5 x °C) + 32 = (9/5 x (-30°C)) + 32= -22 F
Por lo tanto, una temperatura de -30°C corresponde a 243.15 Kelvin y -22 grados Fahrenheit.
Name the following ionic compounds:
1) Fe(NOsh
2 Cu3P
3)GaAs
4) Be(HCO3)2
5) Al(CN)
Can you please help?
Answer and Explanation: (MAKE ME BRAINLIEST PLEASE)
The name of Fe(NOsh is iron(III) nitrate.
The name of Cu3P is copper(I) phosphide.
The name of GaAs is gallium arsenide.
The name of Be(HCO3)2 is beryllium hydrogen carbonate.
The name of Al(CN) is aluminium cyanide.
Explanation :
Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.
Ionic compound are usually formed when a metal reacts with a non-metal.
The nomenclature of ionic compounds is given by:
1. Positive is written first.
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
3. In case of transition metals, the oxidation state are written in roman numerals in bracket in-front of positive ions.
It is an ionic compound because it is formed by the combination of one polyatomic anion (nitrate ion) and cation (iron ion). The charge on iron ion is (+3) and the the charge on nitrate ion is (-1).
Thus, the name of is iron(III) nitrate.
It is an ionic compound because it is formed by the combination of copper cation and phosphorous anion. The charge on copper is (+1) and the the charge on phosphorous ion is (-3).
Thus, the name of is copper(I) phosphide.
It is an ionic compound because it is formed by the combination of gallium cation and arsenic anion. The charge on gallium is (+3) and the the charge on arsenic ion is (-3).
Thus, the name of is gallium arsenide.
It is an ionic compound because it is formed by the combination of one polyatomic anion (hydrogen carbonate ion) and cation (beryllium ion). The charge on beryllium ion is (+2) and the the charge on hydrogen carbonate ion is (-1).
Thus, the name of is beryllium hydrogen carbonate.
It is an ionic compound because it is formed by the combination of one polyatomic anion (cyanide ion) and cation (aluminium ion). The charge on aluminium ion is (+3) and the the charge on cyanide ion is (-1).
Thus, the name of is aluminium cyanide.
if I can, I'll give branliest
How many valence electrons does this atom have?
Answer:
this atom has 7 valence electrons.
Explanation: