Answer:
I think it's metabolism
Hope this helps
When a mixture of iron powder and sulphur is heated it glows more brightly than that of iron filings and sulphur.Explain this observation
Answer:
I don't know
Explanation:
mixture of iron powder and sulphur heated it glows because sulphur and iron are more reactive metals that they shine and sulphur can react with water produce fire it's write
What is the connection between wildfires and sea ice?
PLEASE HELP ASAP A gardener plants a new kind of plant that will attract more helpful insects to his garden. Suddenly, the gardener notices a significant increase in the number of spider webs in the garden. Why has most likely occurred in this situation?
The carrying capacity of the environment has changed.
The limiting factor for spiders has increased in amount.
The carrying capacity of the environment has not changed.
The limiting factor for spiders has decreased in amount.
Answer:
The carrying capacity has changed
Explanation:
By adding in the help bugs, the gardener increased the amount of food available for the predators who eat the help bugs, these are the spiders.
The enviroment for spiders now has more food, and can carry more spiders in it.
What is the process of old crust sinking back into the mantle? *
a. earthquake
b. transform boundary
c. seafloor spreading
d. subduction
Answer:
dddddddddddddd
ddddddddddddddddd
pls help and show work!!!
Answer:
44.9g
Explanation:
You have to convert grams of CH4 to moles, use the mole-to-mole ratio of CH4 to water, and convert back to grams.
(20.0g CH4)(1 mol CH4/16.04g)(2 mol H2O/1 mol CH4)(18.01 g H2O/ 1 mol) = 44.9127 g
Hope this helps!
Which formula can be used to calculate the molar mass of ammonia (NH3)?
Molar mass of N + molar mass of H
3 × molar mass of N + molar mass of H
molar mass of N + 3 × molar mass of H
3 × molar mass of N + 3 × molar mass of H
Answer:
molar mass of N + 3 × molar mass of H
Explanation:
took the test and got it right
Molar mass is the proportion of the mass of the substance to the moles. The molar mass of ammonia is calculated as, the molar mass of N + 3 × molar mass of H. Thus, option c is accurate.
What is molar mass?The molar mass of any substance is the mass in grams divided by the mole of the substance. It is given in g/mol. It is calculated as:
Molar mass = Mass ÷ Moles
In Ammonia there are one nitrogen and three hydrogen atoms, and hence the molar mass is given as,
Molar mass of N + 3 × Molar mass of H
Therefore, option c. molar mass of N + 3 × molar mass of H is correct.
Learn more about molar mass here:
https://brainly.com/question/22532155
#SPJ2
Which statement is true about the particles of a liquid when the liquid changes into a solid?
They move closer to each other.
Their kinetic energy increases.
They stop vibrating.
The attractive force between them decreases.
Answer:
they move closer to each other
Answer:
They move closer to each other
Explanation:
Got it right on the test
Hope this helps :)
100 pts Horticulture (HURRY)
Which of the following facets of IPM control systems is most likely to focus on the diversion of pests from a commercial crop?
monitoring
avoidance
suppression
prevention
Answer:
Suppression
Explanation:
suppression is used to reduce pest populations below the economic threshold if prevention and avoidance tactics have failed--chemical, bio and cultural and other tactics are used which minimize environmental impacts
Answer:
i know im late again but its suppression
Explanation:
Which of the following represents an increase in kinetic energy?
A. Cooling steam from 165°C to 100°C
B. Melting 45g of ice
C. Condensing 60g of steam
D. Heating ice from -50°C to 0°C
Answer:
C
Explanation:
Create the Equation: How many grams of Aluminum Chloride would be made from 42.7 L of Chlorine gas at STP reacting with 50.0 g of Aluminum?
Answer: 169.3 g of [tex]AlCl_3[/tex] will be produced
Explanation:
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
moles of [tex]Al[/tex]
[tex]\text{Number of moles}=\frac{50.0g}{27g/mol}=1.85moles[/tex]
moles of [tex]Cl_2[/tex]
According to ideal gas equation:
[tex]PV=nRT[/tex]
P = pressure of gas = 1 atm (STP)
V = Volume of gas = 42.7 L
n = number of moles = ?
R = gas constant =[tex]0.0821Latm/Kmol[/tex]
T =temperature =[tex]273K[/tex] (at STP)
[tex]n=\frac{PV}{RT}[/tex]
[tex]n=\frac{1atm\times 42.7L}{0.0820 L atm/K mol\times 273K}=1.90moles[/tex]
[tex]2Al+3Cl_2\rightarrow 2AlCl_3[/tex]
According to stoichiometry:
3 moles of [tex]Cl_2[/tex] reacts with = 2 moles of aluminium
Thus 1.90 moles of [tex]Cl_2[/tex]reacts with= [tex]\frac{2}{3}\times 1.90=1.27[/tex] moles of aluminium
Thus [tex]Cl_2[/tex] is the limiting reagent as it limits the formation of product.
As 3 moles of [tex]Cl_2[/tex] give = 2 moles of [tex]AlCl_3[/tex]
Thus 1.90 moles of [tex]Cl_2[/tex] give =[tex]\frac{2}{3}\times 1.90=1.27moles[/tex] of [tex]AlCl_3[/tex]
Mass of [tex]AlCl_3=moles\times {\text {Molar mass}}=1.27moles\times 133.34g/mol=169.3g[/tex]
Thus 169.3 g of [tex]AlCl_3[/tex] will be produced from the given masses of both reactants.
Why do North and South Pole have different winter times?
The two poles have different location.
North Pole is found in the Western Hemisphere.
The tilt of the Earth towards the Sun changes throughout the year.
North Pole is found in the Northern Hemisphere.
Answer:
Explanation:
Both the Arctic (North Pole) and the Antarctic (South Pole) are cold because they don't get any direct sunlight. The Sun is always low on the horizon, even in the middle of summer. In winter, the Sun is so far below the horizon that it doesn't come up at all for months at a time.
Answer:
The tilt of the Earth towards the Sun changes throughout the year.
Explanation
I NEED HELP ASAP alligator
turtle
raccoon +
According to the food web above,
which of the following would be an
example of a predator-prey
relationship?
bass
egret mountain lion
snail
sunfish
deer
algae
shrub
A snail and sunfish
Balligator and raccoon
Cinsect and deer
D mountain lion and alligator
insect
Write the unbalanced chemical equation for the following reaction:
nitrogen + hydrogen produces
ammonia (NH3)
Match the landform to its description.
People Who Answer First And Got This Right, Will Be Mark As Brainilist!
Answer:
Cinder cone-made of pieces of lava
caldera-bowl-shaped depression
volcanic soil-rich in nutrients
lava plateau-material fills in valleys
shield volcano-wide summit, gentle slope
Explanation:
Just did it
Answer: See image
Explanation: match the landform to its description
HELPP asap I’ll mark you as brainlister
Answer:
The solution is nopolar
Explanation:
Answer:
The solution does NOT conduct electricity.
Explanation:
Nonelectrolytes are usually held together by covalent bonds rather than ionic ones.
How do stars, like the sun, produce energy?
• Answers MUST include:
○ how the energy is produced AND the kinds of energy produced.
Answer:
The sun, like all stars, is able to create energy because it is essentially a massive fusion reaction. Technically known as nuclear fusion, this process releases an incredible amount of energy in the form of light and heat.
Types of energy produced: Stars produce energy from nuclear reactions, primarily the fusion of hydrogen to form helium.
Explanation:
hope this helped :D
During the formation of the sun, gravity pulled matter closer and closer
together until what event occurred?
A. Radioactive decay began.
B. Nuclear fusion reactions began.
C.Neutrons and protons formed.
D. A nebula exploded.
Answer:
c
Explanation:
cuz
When 2.0 g copper is heated with an excess of sulfur, copper (I) sulfide is the product. What is the mass of the copper (I) sulfide produced? (mass to mass)
Answer: Mass is 2.50 g
Explanation: reaction 2 Cu + S ⇒ Cu2S
Amount of Cu = m/M = 2.00 g /63.55 g/mol= 0.03147 mol
Amount of Cu2S = 0.5 n(Cu) = 0.01574 mol
M(Cu2S)= 159.17 g/mol, m = n·M
how many grams are in 2 moles of copper
Answer:
In 2 moles of copper, there are 319.2172 grams.
Explanation:
Quick conversion chart of moles Copper(II) Sulfate to grams 1 moles Copper(II) Sulfate to grams = 159.6086 grams 2 moles Copper(II) Sulfate to grams = 319.2172 grams
Zinc nitrate can be produced by reacting an acid and a metal oxide.
Name the acid and the metal oxide used to produce zinc nitrate.
Acid....
Metal oxide.....
Answer:
Acid - dilute nitric acid
Metal oxide - zinc oxide, zinc hydroxide or zinc carbonate
Explanation:
Zinc Nitrate is produced by carrying out a reaction between the following metal oxides and acid
Acid - dilute nitric acid as concentrated nitric acid produces ammonium nitrate
Metal oxide - zinc oxide, zinc hydroxide or zinc carbonate
Hence the correct answer is
Acid - dilute nitric acid
Metal oxide - zinc oxide, zinc hydroxide or zinc carbonate
Can you balance an Egg on the Spring Equinox? R: Restate the Question * A: Answer the question * C: Cite your evidence E: Explain your answer *
Answer:
No you cannot balance an Egg on Spring Equinox without practice and the right egg
Explanation:
No you cannot balance an Egg on the spring Equinox and this is because it is just a Myth, according to Dr Harry E. Keller,
Balancing of an egg ( making an egg stand upright ) takes practice, Getting the right egg ( i.e. an egg with its yolk placed at the center of the egg ) and can be done anytime of the day and not just on spring equinox
What is the name for a star that has too low of a mass to start hydrogen fusion?
А.white dwarf
B.black dwarf
C.red dwarf
D. brown dwarf
Answer:
red dwarf
Explanation:
Answer:
D
Explanation:
The diagram represents a wave pattern in a certain medium. Answer the following questions based on the diagram.
Referring to Figure 23-2A, the wavelength in the diagram is represented by the distance from:
Answer:
c
Explanation:
i just took the test
dlaczego emaliowane garnki rdzewieją w miejscach uszkodzenia emalii
Answer:
Explanation: I don’t even know what you said
Answer:
so basically
Explanation:
bsuxnssu hhusnn ji
Tyrone mixes some chemicals together. He notices that the mixture gives off heat and is hot to touch. What type of reaction is this?
A. Physical
B. Chemical
C. Polar Bear
D. Solution
The ______________________________ of freshwater is greatest at 4 degrees Celsius.
A.) cohesion
B.) specific heat
C.) polarity
D.) density
dog water ;-; yes friend
The evidence of chemical changes with an example of each (include all 5)
Answer:
??????????
Explanation:
FIRST TO ANSWER GET BRAINLIEST
What is the mass in grams of 3.04 mol of ammonia vapor, NH3?
Answer:
3.04 mol NH3* (17.03 g NH3/ 1 mol NH3)= 51.8 g NH3~
The mass in grams of 3.04 mol of ammonia vapor is 51.68g
What is Mole?The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter.
A mole is defined as the amount of substance containing the same number of atoms, molecules, ions, etc. as the number of atoms in a sample of pure 12C weighing exactly 12 g.
Given,
Moles of ammonia = 3.04 moles
Molar mass of ammonia = 14 + 3 = 17
Moles = mass / molar mass
Mass = moles × molar mass
= 3.04 × 17
= 51.68 g
Therefore, mass in grams of 3.04 mol of ammonia vapor is 51.68g
Learn more about Moles, here:
https://brainly.com/question/20486415
#SPJ2
Assume that the variables x and y are directly related. If k = 8, what is the value for each of the following polnts? Be sure
and record your data to be used in the following problem.
Need help pleaseeeeeeeeee help me
Answer:
and I quenot se the question
Explanation:
ok firts you dirent take a god picture