Why do rivers have deltas?
Answer:
A delta is formed when the river deposits its material faster than the sea can remove it. ... Cuspate - the land around the mouth of the river juts out arrow-like into the sea. The Ebro Delta. Bird's foot - the river splits on the way to the sea, each part of the river juts out into the sea, rather like a bird's foot.
I hope it's helpful!
An avocado contains 234 Calories, with 21 grams of fat. Calculate the percent of Calories from fat.
How many formula units in 7.25 moles of Al2O3.
Answer:
If you're asking for the mass (grams)
then 739.21 g
Explanation:
No. of mols = mass/molar mass
Mass= Molar mass x No. of mols
Mass= 101.96 g/mol x 7.25 mols
Mass= 739.21 g
When 0.0801 mol of an unknown hydrocarbon is burned in a bomb calorimeter, the calorimeter increases in temperature by 2.19°C. If the heat capacity of the bomb calorimeter is 1.229 kJ/°C, what is the heat of combustion for the unknown hydrocarbon, in kJ/mol?
Answer:
S A T. NV
Explanation:
What is the chemical formula for nitrogen hetasulfide
Answer:
N203
Explanation:
Answer:
n203
Explanation:
State the atomic number and mass number of the element.
Answer:
Please give me the Elements and I will help in the comments!
Explanation:
Hope I can help you!
:)
ANSWER:
What they said
Explanation:
A balloon is left in the sun and heats up from 29.4°C to 33.7%. If the balloon
was originally at 0.68L, what is the new volume of the balloon?
Answer:
0.78L
Explanation:
According to Charles law, the equation below can be used to calculate the the new volume of the balloon
V1/T1 = V2/T2 .........eqn(1)
Where T1= initial temperature= 29.4°C
T,2= final temperature= 33.7°C
V2= final volume= ?
V1= initial volume= 0.68L
Making V2 the subject of formula from eqn(1)
V2=( T2 × V1)/T1
= (33.7 × 0.68)/29.4
=0.78L
Hence, the new volume of the balloon is 0.78L
(PLZ ANSWER SOON)
What is the total number of joules of heat that must be absorbed to change the temperature of 100 grams of H20 from 25.0°C to 30.0°C
Answer:
10.5 k.J.
Explanation:
Work, which is required to move a body from a resting position,
is called
A: kinetic energy
B: Potential Energy
C: Rotational Energy
D: Vibrational Energy
Hi, what's your worse break up story?
why copper ions move to the negative electrode in figure 1
Answer:
negative attraction
Explanation:
because a copper ion looses electrons, meaning it's negatively charged, and positives and negatives attract.
True or False:Elephants, zebras, and giraffes are all apart of the same community
Answer:
false in this animals so much difference will there
Which of the following particle diagrams represents a mixture?
Answer:
???
Explanation:
i would help answer but your post has no diagrams or at least there not showing up
For the following word equations, write it as a chemical equation, then balance it.
a) potassium + oxygen gas ------ potassium oxide
4K+O2-----------2K2O
Almost all of the energy that supports life on Earth comes from _______________________.
Answer:
THE SUN!
Explanation:
What does an increase of 1 pH number represent?
A. An increase in hydrogen ion concentration by a factor of 10 O B. A decrease in hydrogen ion concentration by a factor of 10 C. An increase of 1 mole per liter of hydrogen ions D. A decrease of 1 mole per liter of hydrogen ions
Answer:
B
Explanation:
An increase of 1 pH number represents A decrease in hydrogen ion concentration by a factor of 10 and the correct option is option B.
What is pH?pH is defined as the negative logarithm of H⁺ ion concentration.
pH is a measure of how acidic or basic a substance is. In our everyday routine, we encounter and drink many liquids with different pH. Water is a neutral substance. Soda and coffee are often acidic.
The pH is an important property, since it affects how substances interact with one another and with our bodies. In our lakes and oceans, pH determines what creatures are able to survive in the water.
Therefore, An increase of 1 pH number represents a decrease in hydrogen ion concentration by a factor of 10 and the correct option is option B.
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TIMED 30 pts
The table below shows the freezing points of four substances.
Substance Freezing point (°C)
Benzene
5.5
Water
0
Butane
–138
Nitrogen
–210
The substances are placed in separate containers at room temperature, and each container is gradually cooled. Which of these substances will solidify before the temperature reaches 0°C?
A benzene
B water
C butane
D nitrogen
Among the given substances, the substance which will solidify before the temperature reaches 0°C is benzene.
What is freezing point?Freezing point of any liquid is that point at which the liquid will convert into solid state at the normal atmospheric pressure.
Among the given substances butane and nitrogen has freezing point less than 0°C, water has 0°C and benzene has more than 0°C. When we cool down the temperature of the container before the 0 degree celsiuc than the beaker in which benzene is present cools gradually.
Hence benzene will solidify before the temperature reaches 0°C.
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Is it better for an element to be more abundant or less abundant?
I believe it's better for it to be more abundant because it's better to have more then less. Take water as an example. Water is an important factor to our survival and if we didn't have enough of that we would be in trouble. Or if we needed food but there wasn't enough more people would be dying from starvation. It's better to have a little more than a little less.
A sample of oxygen gas has a volume of 130.0 ml when its pressure is 0.952 atm. What will the volume of the gas be
at a pressure of 0.974 atm if the temperature remains constant?
Answer:
the volume of the gas when pressure 0.974atm is equal to 127.06ml
why hydrogen and oxygen atoms are more stable when they form bonds in a water molecule?
The outer shell of electrons is full, so there is no need to gain or lose electrons.
The hydrogen and oxygen atoms are more stable in water molecules as they get a complete valence shell when they bonded with other atoms.
What is the reaction to the formation of water?In a chemical reaction, two or more reactants react with each other under the chemical condition to form two or more products. The Chemical reaction is defined as a reaction two or more reactant components react with each other to form two or more products.
The water is formed by reacting hydrogen and oxygen. The chemical reaction of water formation is shown below.
[tex]H_2(g)+O_2(g)\longrightarrow H_2O(l)[/tex]
The balanced chemical equation can be defined as a reaction where the number of moles of reactants is equal to the number of moles of products.
[tex]H_2(g)+ \frac{1}{2}O_2(g)\longrightarrow H_2O(l)[/tex]
The hydrogen atoms have one electron and the oxygen has two electrons less than the complete valence shell. But in the water molecule, every atom has a complete valence shell so atoms become more stable.
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Mg3(PO4)2+ 3K2SO4= 3MgSO4+ 2K3PO4. How many moles of potassium phosphate (K3PO4) will be produced from 5.62 moles of magnesium phosphate (Mg3(PO4)2)?
Answer: 11.24 moles of [tex]K_3PO_4[/tex] will be produced from 5.62 moles of magnesium phosphate [tex](Mg_3(PO_4)_2)[/tex]
Explanation:
The balanced chemical equation for double displacement reaction is:
[tex]Mg_3(PO_4)_2+3K_2SO_4\rightarrow 3MgSO_4+2K_3PO_4[/tex]
According to stoichiometry :
1 mole of [tex]Mg_3(PO_4)_2[/tex] produce = 2 mole of [tex]K_3PO_4[/tex]
Thus 5.62 moles of [tex]Mg_3(PO_4)_2[/tex] will produce=[tex]\frac{2}{1}\times 5.62=11.24moles[/tex] of [tex]K_3PO_4[/tex]
Thus 11.24 moles of [tex]K_3PO_4[/tex] will be produced from 5.62 moles of magnesium phosphate [tex](Mg_3(PO_4)_2)[/tex]
The number of moles of potassium phosphate that will be produced will be 11.24 moles
Calculating the moles based on stochiometryGiven the balanced equation expressed as:
[tex]Mg_3(PO_4)_2+ 3K_2SO_4\rightarrow 3MgSO_4+ 2K_3PO_4.[/tex]
Based on stochiometry, 1 mole of magnesium phosphate produces 2 moles of potassium phosphate
Given that there are 5.62 moles of magnesium phosphate (Mg3(PO4)2), the number of moles of potassium phosphate that will be produced will be2(5.62) = 11.24 moles
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Which best describes a single atom of an element?
A. It is the simplest form of matter.
o
B. It can be changed into a compound.
C. It is composed of more than one type of atom.
D. It can be broken down into simpler mixtures.
Answer:
I believe the answer is A: *It is the simplest form of matter" not 100% sure but I think that's correct
Explanation:
What volume of a 3.00M KL stock solution would you use to make 0.300 L of a 1.25M Kl solution?
Answer:
0.125L or 125 mL
Explanation:
See the image for steps!0.125L of 3.00M KI stock solution is required to make 0.300 L of a 1.25M KI solution.
What is solution?A solution is a homogeneous mixture of one or more solutes dissolved in a solvent.
What is stock solution?A stock solution is a concentrated solution that will be diluted to a solution of lower concentration.
stock solution = diluted solution
What do you mean by dilution?Dilution is the process of decreasing the concentration of a stock solution by adding more solvent to the solution. The solvent added is the water. The more the solvent you add, the more dilute the solution is.The equation for dilution is M1V1=M2V2Where, M1 = concentration in molarity (moles/Litres) of the concentrated solution
V2 = volume of the concentrated solution,
M2 = concentration in molarity of the dilute solution
V2 = volume of the dilute solution.
The volume of 3.00M KI solution can be calculated using the dilution equation:
Given:
M1 = 3.00M, M2 = 1.25M, V1 = x, V2 = 0.300L
M1V1 = M2V2
3.00M(x) = 1.25M(0.300L)
x = 0.125L
Hence, 0.125L of 3.00M KI stock solution is required to make 0.300 L of a 1.25M KI solution.
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How does electronegativity affect
bonding? (Think about ionic vs
covalent).
Which lists the substances from least to most acidic?
a. ammonia, blood, milk, orange juice
b. orange juice, milk, blood, ammonia
c. ammonia, milk, blood, orange juice
d. orange juice, blood, milk, ammonia
A compound is analyzed and found to be 50% sulfur and 50% oxygen. If the total amount of the sulfur oxide is 12.5 g, how many grams of sulfur are there? Show work.
Answer:
25.0g is the mass of sulfur
Explanation:
The sulfur and the oxygen are 50:50. That means there is 1 mole of S per mole of O.
To solve this question we need to convert the mass of O to moles, as moles of O = Moles of S, we can find the moles of S and its mass:
Moles O = Moles S:
12.5g O * (1mol / 16g) = 0.781 moles
Mass S:
0.781 moles * (32g / mol) =
25.0g is the mass of sulfurWhat is the oxidation number of s in na2s4o6?
Answer:
+2.5
Explanation:
So the oxidation number of S in Na2S4O6is +2.5.
Answer:
Explanation:
Oxidation number of Na = 1+ There are two of them, so it is 2*1 = 2
Oxidation number of O = 2- There are 6 of them so 6 * 2- = -12
There are 4 S's so the oxidation number is 4*S
Now set up a small equation
2 + 4s - 12 = 0
And solve.
2 - 12 + 4s =0
-10 + 4s = 0
4s = 10
4s/4 =10/4
s = 2.5
On a recent day the difference between the lowest temperature at the highest temperature of the day was 9*C. By how many degrees fahrenheit did the temperature change
Answer:
48.2 Fahrenheit
Explanation:
Temperature change = 9*C
By how many degrees Fahrenheit did the temperature change?
The relationship between Fahrenheit and degree Celsius is given as;
F = (9 / 5) C + 32
Inserting the value of C;
F = (9 / 5) * 9 + 32
F = 48.2 Fahrenheit
After the phase change in the diagram below, the molecules will move...
?
Energy transferred in
Molecules moving
around each other
A faster, and the substance will be a solid
B faster, and the substance will be a gas
C slower, and the substance will be a liquid
D slower, and the substance will be a gas
Answer:
C is the correct answer
I hope this helps you:)
Explanation:
C slower, and the substance will be a liquid
Which type of plate boundary is associated with seafloor spreading at the source of the spread: convergent, divergent, or transform?
HURRY!