Answer:
b. Stir the water
Explanation:
3 A partial desert food web is shown.
Coyote
Jackrabbit
€
Kangaroo
rat
Seeds
Shrubs
Which type of organism is missing from this food web?
A. Decomposer
B. Predator
C. Consumer
D. Producer
ОА
1. How would you describe a wave to someone
who has never seen one before?
Answer:
I would describe it as a amount of water that builds up and jumps up into the air and then splashes back down into the water like it was never there.
Explanation:
A container of 56mL is at STP, The pressure is increased to 3.6atm and the volume to 162 mL.
What is the new temperature?
Answer:
T2 = 2843.1 oK. This is a huge temperature. Check it for errors.
Explanation:
Remark
This is the same question as the other one I've answered. Only the numbers have been altered.
Givens
v1 = 56 mL
P1 = 1 atm
T1 = 273o K
v2 = 162
P2 = 3.6 atm
T2 = ?
Formula
Vi * P1 / T1 = V2 * P2/T2
Solution
Rearrange the formula so T2 is on the left
T2 = V2 P2 * T1 / (V1 * P1) Now just put the numbers in.
T2 = 162 * 3.6* 273 / (56 *1)
T2 = 159213.6/56
T2 = 2843.1
How does the length of a lunar month compare to the average length of a month in a standard 365-day calendar?
plsssss help !! what are the steps to convert from atoms, compounds, formula units, ect to moles
Answer:
Explained below.
Explanation:
From avogadro's number, we know that;
1 mole = 6.022 × 10^(23) atoms, molecules, protons e.t.c.
Now,to convert from atoms, compounds, formula units, etc to moles, what we will do is just to divide the amount of the particle value given in the specific units by avogadro's number.
For example, to convert 23 × 10^(20) atoms to moles, we will have;
Number of moles = (23 × 10^(20))/(6.022 × 10^(23)) moles = 0.00382 moles
How much carbon dioxide will be formed if 12.5 grams of oxygen reacts with 7.2 grams of propane (C3H8 )? Balanced equation: C3H8 + 5 O2→ 3 CO2 + 4H
Answer:
10.3125 grams of carbon dioxide will be formed.
Explanation:
The balanced reaction is:
C₃H₈ + 5 O₂→ 3 CO₂ + 4 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles participate in the reaction:
C₃H₈: 1 mole O₂: 5 molesCO₂: 3 moles H₂O: 4 molesBeing the molar mass of the compounds:
C₃H₈: 44 g/mole O₂: 32 g/moleCO₂: 44 g/moleH₂O: 18 g/molethen by stoichiometry of the reaction, the following amounts of mass participate in the reaction:
C₃H₈: 1 mole* 44 g/mole = 44 gO₂: 5 moles* 32 g/mole= 160 gCO₂: 3 moles* 44 g/mole= 132 gH₂O: 4 moles* 18 g/mole= 72 gThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
To determine the limiting reagent, it is possible to use a simple rule of three as follows: If by reaction stoichiometry 44 grams of propane react with 160 grams of oxygen, 7.2 grams of propane react with how much mass of oxygen?
[tex]mass of oxygen=\frac{7.2 grams of propane*160 grams of oxygen}{44 grams of propane}[/tex]
mass of oxygen= 26.18 grams
But 26.18 moles of O₂ are not available, 12.5 grams are available. Since you have less mass than you need to react with 7.2 grams of propane, oxygen O₂ will be the limiting reagent.
Then you can apply the following rule of three: if by stoichiometry of the reaction 160 grams of oxygen form 132 grams of carbon dioxide, 12.5 grams of oxygen will form how much mass of carbon dioxide?
[tex]mass of carbon dioxide=\frac{12.5 grams of oxygen*132 grams of carbon dioxide}{160 grams of oxygen}[/tex]
mass of carbon dioxide= 10.3125 grams
10.3125 grams of carbon dioxide will be formed.
Write a story about a family who uses a solar cooker and to stay healthy and safe.
If a solution is saturated and more salt that is added falls to the bottom of the container what is it called?
A: Supersaturated
B: Saturated
C: Unsaturated
Answer:
The answer is B
Explanation:
A solution that contains a relatively low concentration of solute is called dilute, and one with a relatively high concentration is called concentrated. If we add more salt to a saturated solution of salt, we see it fall to the bottom and no more seems to dissolve.
7. Which of the following compounds is the most soluble in water?
O propanoic acid
O l-bromopropane
O propanal
O propane
Answer:
propanoic acid
Explanation:
i hope this helps!
How many grams of aluminum is produced when 82.4 grams of aluminum chloride
decomposes into chlorine gas and aluminum metal?
2AICI: - 2 Al + 3C12
Answer:
16.6 g of Al are produced in the reaction of 82.4 g of AlCl₃
Explanation:
Let's see the decomposition reaction:
2AlCl₃ → 2Al + 3Cl₂
2 moles of aluminum chloride decompose to 2 moles of solid Al and 3 moles of chlorine gas.
We determine the moles of salt:
82.4 g . 1mol/ 133.34g = 0.618 moles
Ratio is 2:2. 2 moles of salt, can produce 2 moles of Al
Then, 0.618 moles of salt must produce 0.618 moles of Al.
Let's convert the moles to mass → 0.618 mol . 26.98g /mol = 16.6 g
What will most likely happen to the Sun in the future?
A. The Sun will burn away most of its fuel and become a red giant star.
B. The Sun will collapse and become a large planet like Jupiter.
C. The Sun will become a giant collection of gas and dust called a nebula
D. The Sun will cool to become a blue dwarf.
Answer:
b
Explanation:
because the sun it's already the biggest planet
The Second Law of Thermodynamics makes it difficult for scientists to explain how the original universe became ordered.
TrueFalse
Answer:
True :)
Explanation:
Is freezing point depression a colligative property?
Answer:
Yes it is a colligative Property
Explanation:
There is freezing point depression, boiling point elevation, Osmotic Pressure, Vapor Pressure Lowering
Explain the process of photosynthesis.
Answer:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
Explanation:
Brainliest please
What does the second quantum number (1) describe?
The second quantum number (l) describes which sublevel the electron is in
What was the name of the super continent that existed when all the
continents were connected? *
O Pangea
O Megacontinent
Ultra continent
O Karen
Answer:
Pangea
Explanation:
Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from earlier continental units approximately 335 million years ago, and began to break apart about 175 million years ago. Forming into what we have today :)
Which statement about planetary orbits is correct?
O A. The planets travel in perfect circles around the sun.
O B. The planets travel in perfect circles around Earth.
O C. The planets travel in ellipses around the sun.
OD. The planets travel in ellipses around the moon.
Answer: C planets dont travel in perfect circles and they do not orbit earth they orbit the sun and they ellipse around the sun. this is the correct answer do not lsiten to the other person
Explanation:
The statement which is correct about planetary orbits is the planets travel in ellipses around the sun.
What are orbits?Orbits is the path of the motion, in which planets do revolutionary motion in a particular sequence.
In the solar system, sun is present at the center and all the planets do revolution around the sun in their orbits which are ellipse in their shape. Elliptical shape of the orbits is due the large distance of planets from the sun which reduces the speed due to less gravitational force of sun on that object.
Hence, option (C) is correct i.e. The planets travel in ellipses around the sun.
To know more about orbits, visit the below link:
https://brainly.com/question/855117
In cellular respiration, living things use sugar to produce energy.
True or false
Cell theory states:
l.All living cells must have a cell wall.
ll.All living cells require glucose for survival
lll.A cell is the basic unit of life.
A. l only
B.ll only
C.lll only
D. l and lll
Answer:
C
Explanation:
cell theory states:
all living things are made of 1 or more cells
all cells come from pre-existing cells
the cell is the basic unit of structure
Write out the balanced chemical equation for the reaction for when phosphate calcium reacts with lead chloride
Answer:
Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water
(b) Zinc + Silver nitrate → Zinc nitrate + Silver
(c) Aluminium + Copper chloride → Aluminium chloride + Copper
(d) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chlorid
Explanation:
What is wind?
..........:..............
Answer:
um air-
Explanation:
something in the air u welcome
How many atoms of Ca are in 1.65 mol of Ca?
Answer:
40.078 atomic mass units
Explanation:
Why burning of fuel is a chemical change give 5 reasons to support your answer
Answer:
Explanation:
1. New substances such as carbondioxide and water is formed.
2. There is evolution of gas bubbles. Gases are released.
3. There is either the absorption of energy or release of energy in form of light and energy.
4. The reaction is irreversible i.e it cannot be reversed, it is permanent once the reaction take place.
5. There is a change in both odor and smell.
A chemical change is a change where new substances are formed due to changes in the properties.
What type of solution do you create if you put 50g of NH4Cl in 100g of water at 70 degrees C
Answer:
hi
Explanation:
What is matter with a composition that is always the same
Answer:
The answer is substances
Matter with a composition that is always the same is defined as a pure substance.
What is matter?Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.
Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.
The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.
Learn more about matter,here:
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PLZ HELPPPP TIMED TESTT!!!!!!?????
Answer:
my probably best answer is B
. Given the following pOH's, calculate the pH for the solution:
a) pOH = 4.18 b) pOH = 12.35
4. Given the following pH's, calculate the pOH for the solution:
a) pH = 6.2 b) pH = 9.55
Answer:
a) pH = 9.82 b) pH = 1.65
a) pOH = 7.8 b) pOH = 4.45
Explanation:
pOH + pH = 14 for all of these solutions.
pH is a quantitative measure of the acidity or basicity of aqueous or other liquid solutions.
3.a)Given;
pOH = 4.18
To Find;
pH = ?
We know that
pH + pOH = 14
pH = 14 – pOH
pH = 14 – 4.18
pH = 9.82
Thus, The pH of the solution is 9.82
b)Given;
pOH = 2.35
To Find;
pH = ?
We know that
pH + pOH = 14
pH = 14 – 2.35
pH = 14 – 2.35
pH = 11.65
Thus, The pH of the solution is 11.65
4. a)
Given;
pH = 6.2
To Find;
pOH = ?
We know that
pH + pOH = 14
pOH = 14 – pH
pOH = 14 – 6.2
pOH = 7.8
Thus, The pOH of the solution is 7.8
4. b)
Given;
pH = 9.55
To Find;
pOH = ?
We know that
pH + pOH = 14
pOH = 14 – pH
pOH = 14 – 9.55
pOH = 4.45
Thus, The pOH of the solution is 4.45
Learn more about pH here:
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Draw electron-dot structure of cyclohexane.*
Answer:
Draw the example below
Hope this helps
Hope it helps.
If you have any query, feel free to ask.
A levee is a human-made feature that is designed to reduce the damage done by a.lighting b.floods c.earthquakes d.landslides
Answer:
not sure but I think its b
Answer:
the answer is about your question isb.floods
What is used up in and stops a chemical reaction?
Answer:What is used up in and stops a chemical reaction? (a) percent yield (b) limiting reactant (c) theoretical yield (d) excess reactant
The correct option is (b)
Explanation:
A chemical reaction is a chemical combination,rearrangement or disintegration of chemical substance(s) (called reactants) to form new chemical substance(s) (called products).
A limiting reactant is the reactant that is totally used up during the course of a reaction. When this reactant is used up, it limits the amount of products formed and eventually stops the chemical reaction.
Explanation:
The limiting reagent is the reactant that is used up completely. This stops the reaction and no further products are made. ... This method is most useful when there are only two reactants. The limiting reagent can also be derived by comparing the amount of products that can be formed from each reactant.
hope this helps have a nice day❤️