Answer:
Noble gases
Explanation:The noble gas group is the group of elements that are the least reactive . The noble gases are the last column on the right side of the periodic table.
how many moles are in 566 grams of CO2? Molar mass of CO2 = 44.0 g/mol
Answer:
Co2 grams to moles
How many grams CO2 in 1 mol? The answer is 44.0095. We assume you are converting between grams CO2 and mole. You can view more details on each measurement unit: molecular weight of CO2 or mol This compound is also known as Carbon Dioxide.
Explanation:
Consider a star with a surface temperature of 12,000
K. According to the graph, the star's peak wavelength
is in the
A) ultraviolet range.
B) radio wave range.
C) visible light range.
D) infrared range.
Answer:
a
Explanation:
Answer:
A. ultraviolet range
Explanation:
If I use a plastic comb and run it "vigorously" through my hair, then hold it next to small torn pieces of tissue paper, what would happen?
If I use a plastic comb and run it "vigorously" through my hair, then hold it next to small torn pieces of tissue paper then paper will get attach to the comb.
What is static electricity?Static electricity is a kind of electricity which will observe when transfer of charged particles is observed from one object to another object.
If we use a plastic comb and run it vigorously through our hairs then static electricity is generated due to the transfer of electrons from the atoms present in the hairs towards the plastic comb as a result of which negative charge is bear by the comb and positive charge is bear by the hairs. Then when we hold this comb near a tissue paper then it produces induced charge and show attraction towards the tissue paper.
Hence, when we hold a combed plastic comb near tissue papers then paper will get attach to the comb.
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name the following compound Mol2
Answer:
you cant answer this
Explanation:
you left something out of the question
The table below shows the main components of Earth's atmosphere. What is the solvent in air? What are the solutes?
Answer:
The correct answer is - nitrogen is solvent and other gases present in the air are solutes.
Explanation:
As it is given and we know that the earth's atmosphere is made up of various gases including nitrogen, oxygen, carbon dioxide, argon, and water vapor, however, the major part of the atmosphere is made up of nitrogen.
Air is a homogenous mixture of gases and most of the part of the air is, 78.08 percent, nitrogen makes it solvent and other gases mixed with nitrogen are solutes including carbon dioxide and oxygen.
Q4) The changes that occur in an experiment that are directly caused by the experimenter (you) are called ___________.
Answer:
Independent Variables
Explanation:
These are changes that are made by the experimenter. They are factors that one is able to manipulate or control their values.
is Nb6+ a oxidizing agent?
Answer:
yes
Explanation:
because of high positive charge of Nb6+ delta G is more negative for Nb6+ as an oxidising agent♡
Answer:
So Sn2+ is a reducing agent (oxidises itself to Sn4+ hence becoming stable) while Pb2+ is already stable so it neither undergoes oxidation nor reduction.
Ocean water density varies more at the the poles throughout the year than at the equator.
Lesson 2.08
True
False
Answer:
true
Explanation:
i go to k12
Ocean water density varies more at the the poles throughout the year than at the equator. Therefore, the given statement is true.
What is density?Density is the mass of a specific material per unit volume. d = M/V, in which d is density, M is weight, and V is volume, is the formula for density. Grams per cubic centimeter are a typical unit of measurement for density. For instance, whereas Earth has a density of 5.51 grams, water has a density of 1 milligrams.
Particle density, which is typically represented as n, describes the number of particles per volume instead of the density of either a single particle. Ocean water density varies more at the the poles throughout the year than at the equator.
Therefore, the given statement is true.
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HELPPPP!!!! Which statement about plants is accurate?
A.
Plants derive energy to grow from nutrients in the soil.
B.
Plants use sunlight and carbon dioxide to create food.
C.
Plants use oxygen and water to create food.
D.
Plants derive energy to grow from water and nutrients.
Answer:
B. Plants use sunlight and carbon dioxide to create food.
Explanation:
This process is called photosynthesis
How many moles each element are in a mole of methane?
[tex] \large \mathcal{ANSWER}[/tex]
This means that the mass of one methane molecule is 12.011 u + (4 × 1.008u), or 16.043 u. This means that one mole of methane has a mass of 16.043 grams. A mole can be thought of as two bags of different sized balls. One bag contains 3 tennis balls and the other 3 footballs.
Samples of helium (He), nitrogen (N 2 ), and methane (CH 4 ) are at STP. Each contains 1 mole or 6.02 × 10 23 particles. However, the mass of each gas is different and corresponds to the molar mass of that gas: 4.00 g/mol for He, 28.0 g/mol for N 2 , and 16.0 g/mol for CH 4 .
Balance the equation c2h2(g)+o2(g)-->co2(g)+h2o(g)+heat
Answer: 2C2H2 (g) + 5O2 ----> 4CO2 (g) + 2H20 (g) + heat
Explanation:
Why is the melting of an ice cube an example of a physical change?
A. because a new substance forms
B. because the change is reversible
C. because the melting ice releases energy
D. because the water has different properties than the ice
Answer:
The answer is C because the melting ice releases energy
Explanation:
N
a You might have heard the phrase 'hot air rises'. Name the process of transferring
energy using moving gas or liquid.
(1 mark)
I think the word you're looking for is convection :)
An alloy of sodium and potassium is used as a coolant due to its
A.high thermal conductivity
B.physical state
C.high reactivity
D.all except c
Answer:
A
Explanation:
Because It's dense meaning that it doesn't burn
Explanation:
https://youtu.be/f_kgUUaMZlw
Make a diagram showing how communication satellites could be used to relay
information from a broadcasting station in new york to a receiving station in
london.
Answer:
Explanation:
Satellite acts as a relay station for earth sources. A transmission station sends the information to the satellite, which in turn retransmits to the receiving stations. The original signal being transmitted from the earth station to the satellite is called uplink of 6 GHz The retransmitted signal from the satellite to the receiving station is called downlink of 4 GH frequency. The transponder is the transmitter-receiver combination in a transponder.
Proxima Centauri is the nearest star to Earth, besides the sun. What can you predict about its brightness compared to other stars? A. Proxima Centauri would be one of the brightest stars in the night sky. B. Proxima Centauri would have the same brightness as other stars in the night sky. C. Proxima Centauri would be one of the dimmer stars in the night sky. D. There is not enough information to make this prediction.
Answer:
ITS D
Explanation:
Answer:
I did the test and the answer is A.
HURRYYY !!!! What radioactive isotope produces Aluminum-13 by beta decay
Answer:
I DONT KNOW SORRY
Explanation:
Answer:
Iodine-131 is more likely to undergo beta decay than positron decay.
CHEMISTRY
OXIDATION NUMBERS
please help me solve only 3 of those oxidation numbers
NO2
Cr2O72-
KCl
NH3
CaH2
SO42-
Na2O2
SiO2
CaCl2
Answer:
NO2=Nitrogen dioxide
KCL=potassium chloride
NH3=Ammonia
What’s the answer???
Answer:
Well I know that the first one is true.
Explanation:
Answer:
1. TRUE
2. FALSE
3. C
Explanation:
Which of the following shows the conservation of mass during cellular
respiration? *
O 6 H2O + C6H1206 – 6 02 + energy
O C6H1206 +6 02 - 6 CO2 + 6H20 + energy
O 6 CO2 + 6 H20 + energy - C6H1206 + 6 02
O 3 CO2 + 3 H20 + energy - 3 C6H1206 +3 02
Answer:
C6H12O6 + 6O2 - 6CO2 + 6H2O + ENERGY
Explanation:
Let me know if I'm right
Identify two sources of heat that melt rocks beneath Earth's surface.
Answer:
magma, melting
I need help with the questions in the picture. Please show workings.
Explanation:
you need to review these formulas
What is defined as a state of matter with a defined volume and shape?
A. Gas
B. Liquid
C. Plasma
D. Solid
Answer:
gas is the state of matter with a defined volume and shape
Determine the empirical and molecular formula for a compound containing 26.1
% carbon, 4.3% hydrogen, and 69.6% oxygen. Molar Mass = 138 g/mol.
determing that the compoumd formed is in 100%
therefore, 26.1 +4.3+69.6 = 100%
hence no need of adding O molecule
finding the numbr of moles of each element
no. of moles of C= given mass÷molar mass
=26.1÷12
=2.1 mol
no. of moles of H = given mass÷molar mass
=4.3÷1
=4.3 mol
no of moles of O =given mass÷molar mass
=69.6÷16
=4.3
the simplest whole nber of the element in the unknown compoumd is 1:2:2 of C:H:O
HENCE, the empirical formula is CH2O2
empirical formula mass of CH2O2 IS
=(12)+(2×1)+(16×2)
12+2+32
46 G/MOL
N= molar mass of the compoumd ÷ emporical mass of the compoumd
N= 138÷46
N=3
molecular formula =N×empirical formula
=3 ×CH2O2
C3H6O6 is the molecular formula
(tartonic acid)
hope it helped u!
2Fe2O3+3C_4Fe+3 CO2 how many moles of Carbon are needed to produce 1.9 moles of iron (Fe)?
Gametes combine in sexual reproduction that creates a fertilized egg that will turn into a ____________.
Group of answer choices
seed
sporophyte
gametophyte
spores
Answer:
i assume that it would be a gametophyte.
Explanation:
Write the balanced equation for calcium and aluminum chloride reacting in a single replacement reaction.
Answer:
Ca + AlCl3 = CaCl2 + Al - chemical equation balancer.
Explanation:
Shown above is information about the dissolution of AgCl(s) in water at 298K. In a chemistry lab a student wants to determine the value of s, the molar solubility of AgCl, by measuring [Ag+] in a saturated solution prepared by mixing excess AgCl and distilled water. How would the results of the experiment be altered if the student mixed excess AgCl with tap water (in which [Cl−]=0.010M) instead of distilled water and the student did not account for the Cl− in the tap water?
Answer:
Value for K would be too small. Less AgCl would dissolve due to the common ion effect due to the presence of Cl- in the water.
Explanation:
Think of this through the lenses of a shifting problem. Cl- ions are a product in this situation and increasing its concentration would shift the reaction back to the solid AgCl. In this specific case, due to Cl- ions, AgCl would dissolve less to maintain equilibrium and as a result, the concentrations of Ag+ and Cl- ions would be lower than normal making a smaller K value.
In the solution of AgCl in tap water, the dissociation constant K has been decreased.
The dissolution of silver chloride in water results in the formation of silver ions and chloride ions.
The dissociation constant has been the amount of compound that has been dissociated into the constituent ions at equilibrium.
Dissociation constant for AgClThe dissociation constant has been dependent on the number of ions in the solution that has been present.
The common ion effect has been defined as the change in the dissociation constant for the compound with the presence of common ions in the solution.
The dissociation of AgCl in tap water has been resulted with presence of Cl ions in the solution. There has been early reach to the equilibrium in tap water.
Thus, with the solution of AgCl in tap water, the dissociation constant K has been decreased.
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how do we know that all the continents were all together at one point in time. writing prompt and it has to be at least 7 sentences
Answer:
We can tell by how the continents look. Scientists who propose the pangea theory have said this. You can see for yourself because all the continents look like puzzle pieces you could put together. Scientists can also tell from the species. For example, let's say a scientist found a bone of a creature at the edge of a continent, the edge of another would have the same species. They have also calculated that the continents in itself are still splitting apart, but very slowly. The reason they split up was because tectonic plate movements.
What kind of energy is produced from moving water?
Answer:
When flowing water is captured and turned into electricity, it is called hydroelectric power or hydropower. There are several types of hydroelectric facilities; they are all powered by the kinetic energy of flowing water as it moves downstream.
Explanation:
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