5.
Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species?
A Conifer trees and tall grasses with roots that loosen the soil
B. O Mosses and lichens that can grow on rocky surfaces
c. Grasses and weeds that arrive as seeds carried by the wind and then germinate in rich soil
D. O Vines and shrubs that help prevent the erosion of shallow soil
No
Answer:
C
Explanation:
Primary succession occurs when pioneer species move into an area that has no plants. This happens because of Mosses and lichens that can grow on rocky surfaces and the correct option is option B.
What is Primary Succession?Primary succession refers to the establishment of a community in an uninhabited area such as rocks.
It is a type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals first colonize a barren, lifeless habitat.
Species that arrive first in the newly created environment are called pioneer species, and through their interactions they build a simple initial biological community.
Therefore, Primary succession occurs when pioneer species move into an area that has no plants. This happens because of Mosses and lichens that can grow on rocky surfaces and the correct option is option B.
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PLEASE HELP THIS IS SCIENCE
ILL MARK U BRAINLIEST
Answer: f=ma
Explanation:
Which particles make up most of the mass of an atom?
i think Neuterons i am right
Answer:
I do not know srry
Explanation:
Concerning the structure of molecules, the biggest factor that affects solubility is
Your answer:
A. polarity
B. tarnish
C. mixiness
Answer:
A
Explanation:
Have a nice day
PLSS helppp
i know how to report btw
Answer:
first one
Explanation:
Karen has 21 green blocks. The ratio of green blocks to the yellow blocks she owns is 3:1. How many blocks does she own?
Answer:
28 blocks
Explanation:
Amount: 21 + y
Ratio: 3:1
Total Ratio: 4
1 = yellow blocks
say if 3 is to 1 then 21 is to how many?
21 ÷ 3
= y = 7
= 21 + 7
= 28 blocks
( or you can use the practical method using your fingers )
How many grams of NaCl is needed to make 750mL of a 2.4 M NaCl solution?
Answer:
Molarity of the solution = 3.000 M
Volume of the solution = 250.0 mL = 0.25 L
moles in 250.0 mL = molarity x volume of the solution
= 3.000 M x 0.25 L
= 0.75 mol
Hence, 0.75 mol of NaCl is needed to prepare 250.0 mL of 3.000 M NaCl solution.
Moles (mol) = mass (g) / molar mass (g/mol)
Moles of NaCl in 250.0 mL = 0.75 mol
Molar mass of NaCl = 58.44 g/mol
Mass of NaCl in 250.0 mL = Moles x Molar mass
= 0.75 mol x 58.44 g/mol
= 43.83 g
Hence, 43.83 g of NaCl is needed to prepare 250.0 mL of 3.000 M solution.
Explanation:
someone help with number 9 please.
both a and b
Answer:
A= Covalent compound
B= Covalent compound
Fluorine gas reacts with aqueous iron (II) iodine to produce iron (II) fluoride and iodine liquid What is the balanced chemical equation for this reaction?
Answer:
F₂ (g) + FeI₂ (aq) → FeF₂ (aq) + I₂ (l)
Explanation:
Our reactants are:
F₂ → Fluorine gas, a dyatomic molecule
FeI₂ → Iron (II) iodine
Our products are:
I₂ → Iodine
FeF₂ → Iron (II) fluoride
Then, the reaction is:
F₂ (g) + FeI₂ (aq) → FeF₂ (aq) + I₂ (l)
We see it is completely balanced.
The physical state of CaBr2 at room temperature? Predict the two other properties of CaBr2 Deduce the charge of ion Ca in the compound CaBr2
Answer:
CaBr2 is a colorless solid and the charge on Calcium is +2
Explanation:
CaBr2 is a colorless solid at room temperature.
Other properties include -
a) It is a crystalline solid
b) Melting point of 765°C.
c) It is deliquescent
d) Soluble in water and absolute alcohol.
The charge of Br is -1. Here two atoms of Br attaches with one atom of calcium. Hence the charge of calcium is +2
If I have 38g of MgCl2, how many moles do I have?
Answer:
0.3991
Explanation:
no. of moles = mass/molar mass.so lets get the molar mass of MgCl2
(Mg=24.305 and Cl=35.453) so the molar mass of MgCl2= 24.305+(2*35.453)
molar mass of MgCl2= 95.211
now lets get the no of moles:no of moles=38g/95.211=0.3991
How many joules of heat are needed to increase the temperature of 19.3 g
of lead from 22°C to 41°C? (Specific heat of lead = 0.128 J/g•°C ROUND
YOUR ANSWER TO A WHOLE NUMBER DO NOT FORGET UNITS q = MCT
Answer:
c i think
Explanation:
The heat is needed to increase the temperature of 19.3 g lead from 22°C to 41° C is 46.9 J or 46.9 MCT.
What is heat?Heat is defined as a form of energy related to the motion of an atom or molecules. It can also be defined as transfer of kinetic energy from one medium or object to another medium or object
Heat energy can be calculated as
q = mcΔT
ΔT = 41°C - 22°C = 19°C
So q = 19.3g x 0.128J/g °C x 19°C
= 46.9 J or 46.9 MCT
Thus, the heat is needed to increase the temperature of 19.3 g lead from 22°C to 41° C is 46.9 J or 46.9 MCT.
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I really need help!!! I will give more points to people that actually help!
Name the molars in the unbalanced equation: C_8H_18+O_2=CO_2+H_2O
Then Name the molars in the balanced equation: 2C_8H_18+25O_2=16CO_2+18H_2O
Next list the order of the elements that you balanced the equation with
Answer:
C8H18 2 114.22852
O2 25 31.9988
CO2 16 44.0095
H2O 18 18.01528
Explanation:
How might the structure of an atom be modeled
Answer:
you can explore the structure of atoms as you add protons, neutrons, or electrons to a model and the name of the element you have created
Explanation:
Which are examples of science rather than pseudoscience? Check all that apply. People can get rid of hiccups by holding their breath. The US surgeon general's 1964 report declared that smoking cigarettes was linked to cancer. Going outside with wet hair will cause a person to catch a cold. The average global temperature of the Earth has increased by almost two degrees in the last century. People should not swim right after eating because they could develop severe muscle cramps and drown.
Answer:
2.The US surgeon general’s 1964 report declared that smoking cigarettes was linked to cancer.4.The average global temperature of the Earth has increased by almost two degrees in the last century.
Explanation:
on edge
Answer:
2 and 4
Explanation:
I just did it....
Question 7 of 10
The Sun has a diameter of about 865,000 miles.
Suppose you were making a scale model of the
solar system with a scale of 1 inch:1,000 miles.
How wide would the Sun be in your model?
A. 865,000 inches
B. 865 inches
C. 86.5 inches
O D. 8.65 inches
Answer:
you have to decide 865,000 with 1000 and the answer is 865
2.
You take a gas at 3 atm and increase the temperature from 120 K to 240 K. What is the final pressure?
A
6 atm
B
Not enough information
C
3 atm
D
1.5 atm
Answer:
A. 6atm
Explanation:
Using pressure law equation:
P1/T1 = P2/T2
Where;
P1 = initial pressure (atm)
T1 = initial temperature (K)
P2 = final pressure (atm)
T2 = final temperature (K)
According to this question;
P1 = 3 atm
P2 = ?
T1 = 120K
T2 = 240K
Using P1/T1 = P2/T2
3/120 = P2/240
Cross multiply
240 × 3 = P2 × 120
720 = 120P2
P2 = 720/120
P2 = 6atm
Which of the following describe the medium of a wave?
Group of answer choices
Measuring the distance between the levels of a wave at rest and its crest.
Measuring the distance between the crests of two waves
Water is the material an ocean wave moves through
Energy is what forms all waves
Answer: Water is the material an ocean wave moves through.
Explanation: An ocean wave and a sound wave are very similar because the water acts as the medium. The waves travel through the water just like a sound wave would travel through the medium.
What’s an example of phase change you’ve seen in real life?
Answer:
Melting and boiling will be seen in this example. Condensation might be seen as well. In the Phases of Water Gizmo™, you can heat up or cool down a container of water.
Explanation:
molar volume problems
Pedro colocó en invierno una puerta de madera en la entrada principal de su casa. En abril, temporada donde las temperaturas ambientes son muy altas, notó que la puerta rosaba e incluso dañaba parte del piso de su entrada, considerando el factor de la temperatura, ¿Qué fenómeno físico podría ser la causa de lo sucedido?
Answer:
imbibición
Explanation:
La propiedad responsable del fenómeno observado es la imbibición de la puerta de madera maciza.
La imbibición se refiere a una situación en la que las partículas sólidas de una sustancia absorben agua sin formar una solución.
A medida que la puerta de madera absorbe agua, se hincha. Esto es responsable del levantamiento de la puerta. Esta absorción de agua ocurre cuando la temperatura y la humedad relativa son altas. Esto es así porque el aire más cálido retiene más humedad.
Which of the following are held together by nonpolar covalent bonds?
Question 2 (2 points) Which of the following is true about finding the molar mass of potassium sulfate, K2SO4?
The molar mass is found by adding the molar mass of K, to the molar mass of sulfate.
The molar mass is found by taking 2 x the molar mass of K, plus 1 x the molar mass of sulfur, plus 4 x the molar mass of oxygen
The molar mass is found by using Avogadro's number divided by 22.4.
The molar mass of potassium sulfate is a number between 1 and 10.
Answer:
the answer is the 2 nd one ok
Answer:
Did you find the answer for this?
Explanation:
I am doing the test right now
Is farting an example of an exothermic reaction?
*for real though I have never heard of a cold fart
Answer:
i would assume i mean who has cold farts
Explanation:
Yes, farting is an example of an exothermic reaction.
What is an exothermic reaction?A reaction that is chemical in nature and is characterized by the release of energy in the form of heat or light is called an exothermic reaction.
Farting is a normal part of digestion that reflects the activity of the bacteria in your gut.
Yes, farting is an example of an exothermic reaction.
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How many liters of CH4 gas are there in 1.20 moles of CH4 when the gas is held under standard conditions?
Please answer quickly!
Answer:
26.88 L
Explanation:
When any gas is held under standard conditions, one mol will occupy 22.4 liters.
With the above information in mind, we can calculate how many liters would 1.20 moles of CH₄ gas occupy under standard conditions:
1.20 mol * 22.4 L/mol = 26.88 L
So 1.20 moles of CH₄ would occupy 26.88 liters.
¿Cuántos gramos de dicloruro de manganeso se obtienen cuando reaccionan 7,5 g de ácido clorhídrico? MnO2 + 4 HCl = Mn Cl2 + Cl2 + 2 H2O *
Answer:
6.6 g
Explanation:
La ecuación de la reacción es;
MnO2 + 4 HCl -------> MnCl2 + Cl2 + 2H2O
Número de moles de HCl que reaccionan = 7.5g / 36.5 g / mol = 0.21 moles
Dado que;
4 moles de HCl producen 1 mol de MnCl2
0,21 moles de HCl producen 0,21 * 1/4 = 0,0525 moles de MnCl2.
Masa de MnCl2 = 125,844 g / mol * 0,0525 moles = 6.6 g
What are the procedures for performing an acid property test
Answer:
In the context of transaction processing, the acronym ACID refers to the four key properties of a transaction: atomicity, consistency, isolation, and durability. Atomicity. All changes to data are performed as if they are a single operation
What is an ion with a positive charge called
Answer:
An ion with a positive charge is called cations because if there's a group of atoms, a positive or negative charges :3
Explanation:
:3
How many moles are in 3.0g of A1203?
Answer:
0.065 moles
Explanation:
DONT SKIP OR ELSE what solids, liquids, and gases does the human body produce
farting pooping peeing :3