The red diamond tells how flammable the chemical compound is or how easily it catches fire.
The yellow diamond tells about reactivity how quickly the compound reacts with other materials.
Is N2F5 ionic or covalent
Answer:
it's a covalent compound
Explanation:
Two non metals are bonded to together
10 Look carefully at the picture. it shows an electron in the excited state on the left, and the
electron returning to its ground state on the right. When the electron return to the ground state it
emits
photon
excited state
ground state
a) blast of cold air
c) proton
b) electrostatic charge
d) photon (light)
According to the Heisenberg uncertainty principle, it is impossible to know both the __ and __ of an electron simultaneously.
a. mass and charge
b. position and velocity
c. mass and position
d. velocity and charge
Answer:
C
Explanation:
It's simple because there were so many quantitative analysis of error and they didn't had the kind of observations as we have now
Give an example of kinetic energy
Answer: A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass. The kinetic energy of an asteroid falling towards earth is very large. The kinetic energy of the aeroplane is more during the flight due to large mass and speedy velocity.
Explanation:
What should the range for "Light Intensity" be?
A.0-18-0-18%
B.24-51% 24-51%
C.79-90% 79-90%
D.100%
I’ll give brainliest, pls help with this mole concept. Due in 2hours
Answer:
20 g of copper (II) oxide, CuO
Explanation:
The balanced equation for the reaction is given below:
CuO + 2HCl —> CuCl₂ + H₂O
From the balanced equation above,
1 mole of CuO reacted to produce 1 mole of CuCl₂.
Next, we shall determine the number of mole of CuO needed to produce 0.25 mole of CuCl₂. This can be obtained as follow:
From the balanced equation above,
1 mole of CuO reacted to produce 1 mole of CuCl₂.
Therefore, 0.25 mole of CuO will also react to produce 0.25 mole of CuCl₂.
Finally, we shall determine the mass of 0.25 mole of CuO. This can be obtained as follow:
Mole of CuO = 0.25 mole
Molar mass of CuO = 64 + 16
= 80 g/mol
Mass of CuO =?
Mole = mass /Molar mass
0.25 = mass of CuO /80
Cross multiply
Mass of CuO = 0.25 × 80
Mass of CuO = 20 g
Therefore, 20 g of copper (II) oxide, CuO is needed for the reaction.
True/False: There are about 400 known elements
Answer: false
Explanation:
there are no more then 112 known elements.
Answer:
false
Explanation:
their are only 118 element
how many atoms are in 7.3 moles of arsenic atoms? 1 mol = 6.02 x 10^23 particles
Answer:
6,9
Explanation:
A bathtub is half full of warm water. How could the
thermal energy of the water be increased? Check
all that apply.
Answer: A. B and C
Explanation:
I'm pretty sure this is right....
Have a great day :)
Answer: It is A,B. and C.= Add hot water to the tub.
Heat the water in the tub without adding more water.
Add more water at the same temperature to the tub.
Explanation: I got it correct.
What unit is used to measure weight?
Answer:
The unit is: Newton.
Hope it helps:D
both of janies parents have dark hair. how likely is janie to have blonde hair?
Answer:
The probability of Janie to have blonde hair would be a slim 13% to a 34%.
Explanation:
Not 100% sure but best estimation I can come up with.
True or False: Potential and kinetic energy are fixed and do not convert between the two types. *
10 points
Answer:
false
Explanation:
According to the law of conservation of energy, energy can neither be created nor destroyed but can be converted from one form to another. Hence, the given statement is true.
What is law of conservation of energy?According to law of conservation of energy, it is evident that energy is neither created nor destroyed rather it is restored at the end of a chemical reaction .
Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of energy is widely used in field of chemistry, fluid dynamics.
Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Julius Robert Mayer in the year 1842.
Learn more about law of conservation of energy,here:
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How many atoms of helium are present in 0.366g He?
Answer:
Explanation:
mass of one atom of helium-4 is one-third the mass of one atom of carbon-12. You can find ... mass He. 1 mole He. 4.00 g He. -= 0.366 g He. 0.0914 mothé x 1 motte. Helium ... How many moles of oxygen atoms are present in 5.00 mol diphos-.
7 Describe How and why does temperature
change with altitude in the mesosphere?
Answer:
Temperatures in the mesosphere decrease with altitude. There are few gas molecules in the mesosphere to absorb the Sun's radiation, the heat source is the stratosphere below. The mesosphere is extremely cold.
Explanation:
Explanation:
քʀa ʋċ ʀɛsքօռɖɛʀ ɛ sօ ʟɛʀ ɛ ɛռtɛռɖɛʀ օ զʊɛ ʋċ զʊɛʀ ʋɛʀ ռa քɛʀɢʊռta aɨ ʋċ քɛsզʊɨsaʀ օ զʊɛ ʋօċɛ զʊɛʀ ʋɛʀ ɛ ʀɛsքօռɖɛ օxɛ
For each type of fuel shown in the table above (H2, CH4, O2), how much energy should
be added to the system in order to break the bond between the atoms forming the
molecule of the fuel?
Answer:
Explanation:
Chapter 4: Energy from Combustion The primary means of generating energy for human
endeavors is the combustion of fuels.
Coal - burned in power plants
Gasoline - burned in automobiles
Natural gas - heating
Heating oil – heating
.Propane, charcoal, wood, candles, …
Combustion (burning in air) releases the chemical energy,stored in the chemical bonds of the fuels.
BRAINLY PLZ
How many moles of CH3 are in 60 grams of CH3 ?
Answer: There are 3.99 .
Explanation:
Does the temperature of the solvent (water) affect the rate of dissolving?
Describe what causes the airbag to inflate on the particle level
Answer:
The chemical at the heart of the air bag reaction is called sodium azide, or NaN3. CRASHES trip sensors in cars that send an electric signal to an ignitor. The heat generated causes sodium azide to decompose into sodium metal and nitrogen gas, which inflates the car's air bags
Explanation:
You are working a crime scene and discover a weapon. How do you pick up the weapon so you do not disturb
any latent fingerprints?
Answer:
you pick it up with gloves and make minimal contact with it
This is the type of wave that travels in one direction but the energy travels in the opposite direction
Answer:
Transverse wave
Explanation:
A wave is defined as a disturbance along a medium which transfers energy from one point to another.
A wave may be classified as transverse or longitudinal based on the direction of energy transfer relative to the direction of wave motion.
In a transverse wave, energy is transferred in a direction perpendicular to the direction of wave travel. Hence, the direction in which the energy travels is opposite to the direction in which the wave travels.
Help please!!! How many grams are in 3.46 moles of Sulfur?
Answer:
The answer is: 78.04454 grams
Explanation:
Answer:
IHi the answer is 32.065 grams
Which of the following best describes the Earth's movement around the sun?
A)The Earth is closer to the sun in Summer than in Winter.
B)The Earth moves in a circular pattern around the Moon
C)The Earth's axis moves back and forth, resulting in different seasons
D)The Earth moves in an elliptical orbit around the sun
Answer:
D)The Earth moves in an elliptical orbit around the sun
The statement earth moves in an elliptical orbit around the sun best describes the movement of earth around the sun.
What is earth?Earth is the third planet of the solar system and the only astronomical object known to support life.
What is an elliptical orbit?When an object moves around another object in an oval shaped path, it is known to be revolving in an elliptical orbit.The orbit is elliptical because of Newton's law of gravity.The planets in the solar system orbit the sun in elliptical orbits. Many satellites orbit the Earth in elliptical orbits as does the moon.The movement of the earth around the sun in a fixed path or orbit is called Revolution. The axis of the earth which is an imaginary line, makes an angle of 66½° with its orbital plane.
Hence, option D is the correct answer.
To learn more about elliptical orbit here
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HELPPP
i’ll give brainly :)))
Answer:
12. 2.9 g= 0.0029 13. 14.7 L = 14700 ml
14. The chemical formula of magnesium hydroxide is Mg(OH)2, and its molar mass is 58.32 g/mol.
Explanation:
Help asap.
How many moles are 5.55x10^25 atoms of Mg
Answer:
[tex]\boxed {\boxed {\sf About \ 92.2 \ moles \ of \ Magnesium}}[/tex]
Explanation:
To convert from atoms to moles, we must Avogadro's number:
6.022*10²³This number tells us the amount of particles (atoms, molecules, etc.) in 1 mole of a substance. In this case, it is atoms of magnesium in 1 mole.
6.022 *10²³ atoms Mg / 1 mol mgNow, let's set up an expression using:
[tex]\frac {6.022 * 10^ {23} \ atoms \ Mg}{ 1 \ mol \ Mg}[/tex]
Multiply this by the given number of atoms.
[tex]5.55*10^{25} \ atoms \ Mg *\frac {6.022 * 10^ {23} \ atoms \ Mg}{ 1 \ mol \ Mg}[/tex]
Flip the fraction so the atoms of magnesium can cancel.
[tex]5.55*10^{25} \ atoms \ Mg *\frac { 1 \ mol \ Mg }{6.022 * 10^ {23} \ atoms \ Mg}[/tex]
[tex]5.55*10^{25} *\frac { 1 \ mol \ Mg }{6.022 * 10^ {23}}[/tex]
Multiply and condense this into 1 fraction.
[tex]\frac { 5.55*10^{25} \ mol \ Mg }{6.022 * 10^ {23}}[/tex]
[tex]92.1620724 \ mol \ Mg[/tex]
The original measurement had 3 significant figures, so our answer must have that many as well. For the number we calculated, that is the tenth place. The 6 in the hundredth place tells us to round the 1 to a 2.
[tex]92.2 \ mol \ Mg[/tex]
It is about 92.2 moles of magnesium.
The equation below shows a reaction that is second order in A and first order in B.
2A(9) +B(g) → C(g)
What is the rate law for the reaction?
kind of protists can live in groups with different individuals performing different jobs (site 1)
Answer:
The plasmodial slime molds are the kind of protist that can live in groups in which different individuals perform different jobs. Some kinds of bacterial cell walls also have other functions.
How many streams form?
Answer:
DE Q SECUENCIAS DE Q
Explanation:
What are the cons of using a cup made of steel?
Answer:
1. Sometimes there’s a metallic taste to the water
2. The water becomes hot if left in your car or outdoors in hot weather
3. Bottle can dent if dropped
4. Paint sometimes peels off exterior of metal bottles
5. Metal water bottles lined with a resin lining also leach BPA. Do not get a bottle with what appears to be a “colored” lining of any kind.
Explanation:
Answer:
Steel feels cold, can dent, and is heavy. Sometimes it has a strange taste. Steel can also stain with use.
Explanation:
Hope this helps! :)
Si en un laboratorio hay 300 moles de plomo y 300 moles de plata en cual de los dos casos la masa en mayor?
Answer:
Esto significa que la masa en las moles de plomo es mayor que en las de plata.
Explanation:
Las moles de los átomos representan la cantidad de átomos presentes. Para saber la masa de los átomos debemos convertir las moles a gramos usando el peso molecular de cada uno de los átomos (207.2g/mol para el plomo y 107.82g/mol para la plata).
La masa de plomo en 300 moles es:
300 moles * (207.2g / mol) = 62160g de plomo
Y la masa de plata es:
300 moles * (107.82g / mol) = 32346g de plata
Esto significa que la masa en las moles de plomo es mayor que en las de plataDoes the following compound contain a polyatomic ion? Na2SO4
Yes
No
