Answer:
molerat
Explanation:
Answer:
3.28 mol
Explanation:
2 mol FeCl3 forms from 2mol of FeCl2
therefore 3.28 mol of FeCl3 forms from=2/2×3.28 mol=3.28 mol
2. This chart describes several characteristics of human civilizations.
(6.04)
Characteristics of Human Civilizations
Stable Food Supply
?
Developed Systems of Writing
Which phrase best completes this list?
A. Created militaries
B. Complex social structures
C. Use of fire for protection
D. Declining population
Identify at least four limiting factors in the local ecosystem and their impact on native populations.
4 limiting factors could be water, space, pollution, and access to mates, could all be factors in limiting the native population. Water, could be affected by pollution, and this would remove water, which means that no living things would be able to survive, or at the best be hindered in its growth. Space could be removed by deforestation, or simple water rising, and this could kill off the population, thus removing mates for the population. (hope this helped, if it did, please consider marking brainiest)
The availability of food, water, shelter and diseases are the four limiting factors in the local ecosystem and their impact on native populations.
What are the limiting factors?The limiting factors such as availability of food, water, shelter and diseases can change animal and plant populations because these factors has a direct impact on the organisms and the organisms is depend on these factors for their survival.
So we can conclude that availability of food, water, shelter and diseases are the four limiting factors in the local ecosystem and their impact on native populations.
Learn more about population here: https://brainly.com/question/25630111
Using the figure, angels p and w are example of
Answer :)
Answer:
D
Explanation:
we just did this in class last week haha i know my math :)
help please don’t understand
hello sister the answer is very easy it is 2 miles of oxygen
This equation is balanced.
C + S8 -4CS2
True
False
False.....................
C9H20+14O2→9CO2+10H2O a. How many molecules of nonane will burn in a tank that has 770 mL of oxygen at STP? b. If the container were heated to 78O C before the combustion, what would the pressure be?
Explanation:
C9H2O + 14O2 → 9CO2 + 10H2O
a. How many molecules of nonane will burn in a tank that has 770 mL of oxygen at STP?
From the reaction;
1 mol of nonane reacts with 14 mol of Oxygen
At STP, 1 mol = 22.4 L
Converting 770 ml (0.77 L) to mol;
1 = 22.4
x = 0.77
x = 0.77 / 22.4 = 0.034375 mol
Back to the equation;
1 mol = 14 mol
x mol = 0.034375 mol
Solving for x;
x = 0.034375 * 1 / 14
x = 0.00245535714 mol
1 mol = 6.022 * 10^23 molecules
0.00245535714 mol = x
Solving for x;
x = 0.00245535714 * 6.022 * 10^23
x = 1.4786 * 10^21 molecules
b. If the container were heated to 78O C before the combustion, what would the pressure be?
Initial Pressure P1 = ?
Initial Temperature T1 = 780 +273 = 1053 K
Final Temperature (STP) T2 = 273 K
Final Pressure (STP) P2 = 1 atm
Using gay lusaac's law;
P1 / T1 = P2 / T2
Inserting the values;
P1 = T1 * P2 / T2
P1 = 1053 * 1 / 273
P1 = 3.857 atm
Which states of matter change shape when moved? Which states of matter change shape when moved?
Answer:
Gas and Liquids
Explanation:
Question is on the image
Answer:
It has direction and size.
Explanation:
The way I learned it was that vectors have direction and Magnitude. Magnitude is just the length of the vector. So you are right.
(-15)+(-12)+14
how do u simplify
Answer:
-15-12-14=-13
Explanation:
we simplify by opening the bracket
1 point
1. A balloon has 1.55 L of air in it exerting a pressure of 105.2 kPa. At
constant temperature, if the pressure increases to 122.0 kPa, what is the
volume?
Answer:
[tex]V_2=1.34L[/tex]
Explanation:
Hello there!
In this case, since this problem is describing how pressure changes as a function of volume and vice versa, it is possible recall the Boyle's law as shown below:
[tex]P_1V_1=P_2V_2[/tex]
Whereas we are asked to compute the volume when the change is pressure is performed (V₂); thus, we proceed as follows:
[tex]V_2=\frac{P_1V_1}{P_2}\\\\V_2=\frac{1.55L*105.2kPa}{122.0kPa}\\\\V_2=1.34L[/tex]
Best regards!
Find the net force on a rope which is being pulled by 2 groups of
students. The blue team is pulling with a force of 1500 N to the west and
the orange team is pulling with a force of 1300 N to the east.
Answer:
200 N to the west b/c we have 1500 to west and
1300 N to east . the forces have a opposite direction.
thus we add the force. and we gain 200N force.
is K2CO3 a reactant or product ?
Answer:
Product
Explanation:
Honestly I’m just guessing based on the fact it’s simplified and doesn’t have a really long chemical equation.
3Ba(C2H3O2)2 + 2K3PO4 ⟶ Ba3(PO4)2 + 6KC2H3O2
If 4.36 mol of potassium phosphate react, how many grams of barium phosphate are produced?
Hello Mistyann!
First you need to know amount of barium phosphate is
Half of potassium phosphate, also 2.18 mol.
Molar mass of Barium phosphate is 3·137.2 + 2·(30.97+4·16) g/mol
You can calculate it yourself dear.
Now mass is amount of substance · molar mass.
It has been an honour to teach you, dear,
God bless!
Exothermic or Endothermic ~N2(g) + 2 O2(g) → 2 NO2(g) ΔH= +67.6 kJ
Explain why?
Answer:
endothermic
Explanation:
Because the value of the heat of reaction is positive .
Explain the differences between bronze and brass, and steel and cast iron. Which is best used for cooking wares?
Answer:
Steel and cast iron
Explanation:
They are all metal but assuming that you are finding the best material for your pan i suggest going for steel or cast iron
Which of the following are parts of the Nervous System?
Choose all the apply
Nerves
Brain
Heart
Skin
Spinal Cord
Lungs
Answer: Nerves, Brain and spinal cord
Explanation:the other choices are either part of the cardiovascular system or the respiratory system
in which way are sugars usually transported throut a pine tree
how is salt obtained or manufactrured
Answer:
There are three methods used to produce salt: solar, evaporation and rock mining.
Explanation:
How many grams are found from 2 moles of glucose C6H1206?
Answer:
360g
Explanation:
Hope it helps you!
Organisms that get energy by eating dead organisms are called *
scavengers
omnivores
herbivores
decomposers
Answer:
The Answer is A. Scavengers
What would happen if you mixed Zinc and Sulfur thoroughly,and you put a hot metal rod to it?
Answer:
A violent reaction will occur and zinc sulphide is formed as a product
what are things than can circulate
How do mountains affect the climate of a region?
(Giving brainlist for a summary and correct answer)
Answer:
Mountains can have a significant effect on rainfall. When air reaches the mountains, it is forced to rise over this barrier. As the air moves up the windward side of a mountain, it cools, and the volume decreases. As a result, humidity increases and orographic clouds and precipitation can develop
Answer:
Mountains effect them with contact
Explanation:
They are always pushing eachother and crash
How many grams of Li are present in 3.4x1026 atoms of Li?
Answer:
1.0534×10²⁷ grams
Explanation:
multiplying the number of atoms with Avogadro's constant.
Which sentence in paragraph 1 explains what Americans are doing to help the environment?
O a. Today, 60 percent of us believe that climate change is a serious threat.
O b.In 1980, coal, oil and gas made up 89 percent of the energy we used.
0
c. 90 percent of us have recycled in the last year.
O d. Sometimes you can even find low belief in climate change.
15. _____ is the breakdown of rocks into smaller particles by natural processes.
A. Deposition
B. Weathering
C. Erosion
Answer:
B
Explanation:
Weathering is the physical and chemical breakdown of rock at the earth's surface. ... The physical breakdown of rock involves breaking rock down into smaller pieces through mechanical weathering processes. These processes include abrasion, frost wedging, pressure release (unloading), and organic activity.
A student draws the model shown below. Which of these best compares the conditions at Location X and Location Y?
Answer:
Explanation:
You have to use formula b to your answer
Renewable energy resources include *
O all of the above
O moving water
O biomass
O wind
Shauna is looking over her family history for heart disease and thought about the easiest way to represent what she discovered. What model is used to show the pattern of traits that are passed from one generation to the next in a family?
dichotomous key
pedigree chart
line graph
punnett square
Why is there a hole in the ozone layer? What do you think the consequences of that hole are?
Answer:
There is a ozone layer because of the special atomphere and chemical conditions that takes place there. I think the consequences of that home area is the very low winter temperatures.
Answer:
There is a hole in the ozone layer because of the pollution on earth. Because of that the UV rays are easily entering the earth through that portion. The consequences of this can be cancers, global warming and disastrous storms.
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