Answer:
B
Explanation:
Kinetic and electrical energy are generated when a light bulb is turned on
What is the difference between gases and nonmetal?
Answer:
1) some of the gas maybe metal but non metal directly refers it self to not begin metal
2) gases are present in only air . non metals are available in solid form too
A solution has a pH of 10.
What is the concentration of hydrogen ions?
What is the mass in grams of 4.63 mol of C8H18?
Answer: 114.22852 grams
HOPE THIS HELPS
How many grams of sodium do I need to react with chlorine to make 20g of sodium chloride
Explanation:
Na=23
cl2=35.5×2=71
NaCl=23+35.5=58.5
2Na + Cl2== 2NaCl
2. : 1
20/23=2(x)/71
(71×20)/(23×2)=x
x=30.87g
Use the image below to help you answer this question: Your friend has a red laser pointer. What would happen to the light coming from the laser pointer if it's wavelength were to increase (decrease its frequency).Single choice. (1 Point)
a The light would shift towards the color blue
b The light would no longer be visible to the human eye
c The light would be brighter
d The light would be less bright
Answer:
the light would be less bright
Explanation:
How many moles of CH2 must react in order to produce 50 moles
outline the synthesis of c6h5ch2ch2cooh starting from benzaldehyde and bromoacetate
Answer:
i gotchu
Explanation:
its the 3rd raikages will eassyyy
A balloon with a volume of 2.0 L is filled with gas at 3 atm. If the pressure is reduced to 1.5 atm without a change in temperature, what would be the new volume of the balloon?
What do all atoms of the same element have in common?
А. atomic mass
B. mass number
C. number of neutrons
D. atomic number
What is the change in temperature when 75 grams of water releases -2657 J of energy? The specific heat of water is 4.18 J/g°C
Perform an atom inventory on (NH4)3P
Answer:
(NH 4) 3P Ionic fu ammonium phosphide 3) Ca 3N 2 Ionic fu calcium nitride 4) Al( NO B) ... If there is a multi-valent metal present, write both the stock and classical name. ... 66 * 10^(23)"atoms of H" The first thing to do here is write the chemical ...
Explanation:
just follow the instructions below.
hope it helps.
#CARRYONLEARNING
How many molecules are in 4.67 mols of H2O
Answer:
2.81 × 10²⁴ moleculesExplanation:
The number of molecules can be found by using the formula
N = n × L
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
We have
N = 4.67 × 6.02 × 10²³
We have the final answer as
2.81 × 10²⁴ moleculesHope this helps you
WILL GIVE BRAINLIEST TO BEST ANSWER!
What are some ways to decrease the environmental impact of your fashion?
Answer:
UK stop spending a lot on clothes if u don't wear half of them
Thallium-208 has a half-life of 3 minutes. How long will it take 60.0 g of thallium-208 to decay so that
15.0 g of the thallium-208 remains?
O3 min
O 6 min
O 9 min
O 11min Please explain how you got the answer?
Answer:
The decay takes 6min
Explanation:
The decay of an isotope as Thallium-208 follows the equation:
ln[A] = -kt + ln[A]₀
Where [A] is amount of isotope after time t
k is decay constant = ln 2 / t(1/2)
[A]₀ is initial amount of the isotope
Replacing:
[A] = 15.0g
k = ln 2 / t(1/2) = ln 2 / 3min = 0.23105 min⁻¹
t = ?
[A]₀ = 60.0g
ln[A] = -kt + ln[A]₀
ln[15.0g] = -0.23105 min⁻¹*t + ln[60.0g]
-1.38629 = -0.23105 min⁻¹*t
6min = t
The decay takes 6min
please helpp!! i appreciate anythinggg
I know number 1 is 58.04 g/mol
Calculate the temperature needed to increase 268mL of nitrogen gas at
25°C to 824mL.*
Answer:
96.92 K
Explanation:
Applying,
V/T = V'/T'..................... Equation 1
Where V = Initial Volume, T = Initial Temperature, V' = Final Volume, T' = Final Temperature.
Make T the subject of the equation
T = VT'/V'................. Equation 2
From the question,
Given: V = 268 mL, V' = 824 mL, T' = 25°C = (25+273) = 298 K
Substitute these values into equation 2
T = (268×298)/824
T = 96.92 K
Hence the Initial temperature of Nitrogen gas is 96.92 K
Pls just help me out the vid is 6 Chemical Reactions That Changed History; need help on no.6. I DON’T EVEN KNOW HOW TO SOLVE IT
Explanation:
HCL you can do it yourself .try again
how many moles are in 150 grams of MgO?
Answer:
40.3044 grams.
Explanation:
Please mark brainliest
What is the mass in grams of 2.00 10 5 atoms of naturally occurring neon
Answer:
2.00X10^5 x 20gNe/6.02x10^23=6.46x10^-18 but books answer is 797.
Explanation:
The mass is grams 2.00 x 10⁵ atoms of naturally occurring neon is 6.70 x 10⁻¹⁸g.
What is neon?Neon is a chemical element in the periodic table. Its atomic number is 10, and it is a Nobel gas. It is a colorless, monatomic, and odorless gas.
Mass is the quantity of matter in a physical body. It can be calculated by the volume and density of the element. The mass can be calculated by the number of atoms.
Given the number of atoms of Ne is 2.00 x 10⁵
The molar mass Ne = 20.18 g/mol
6.022 x 10²³ Ne atoms have a mass of 20.18 g.
The number of atoms is divided by the Avogadro number and the mass of the element.
2.00 x 10⁵ atoms Ne has mass = (2.00*10⁵) / (6.022*10²³) x 20.18 g =
6.70 x 10⁻¹⁸g.
Thus, the mass is grams 2.00 x 10⁵ atoms is 6.70 x 10⁻¹⁸g.
To learn more about neon, refer to the link:
https://brainly.com/question/5605139
#SPJ2
In the graphic,
X represents which element?
40
20
Answer:Ca
Explanation:
Please solve I will give brainliest to correct answer
Answer:
-846 kJ
Explanation:
Using Henderson Hasselbach's law,
2Al + 3/2 O2 -> Al2O3 H = -1670 kJ
-(2Fe + 3/2 O2 -> Fe2O3) = Fe2O3 -> 2Fe + 3/2 O2 H = 824 kJ
-1670 kJ + 824kJ = -846 kJ
why finger print is the cheapest and easiest method of personal identification?
What happens in a chemical reaction?
А
Substances change in appearance but not in chemical composition.
B
Substances change from solid to liquid or gas.
с
Substances interact to form one or more new substances.
D
New atoms are created or destroyed.
Answer:
c seems like the best answer
does anyone know how many grams of of fe2o3 react to produce 450 grams of fe
Answer:
14.4g
Explanation:
please help
How many grams of barium sulfate are present in 250 of 2.0 M BaS04 solution?
Answer: There are 0.5 grams of barium sulfate are present in 250 of 2.0 M [tex]BaSO_{4}[/tex] solution.
Explanation:
Given: Molarity of solution = 2.0 M
Volume of solution = 250 mL
Convert mL int L as follows.
[tex]1 mL = 0.001 L\\250 mL = 250 mL \times \frac{0.001 L}{1 mL}\\= 0.25 L[/tex]
Molarity is the number of moles of solute present in liter of solution. Hence, molarity of the given [tex]BaSO_{4}[/tex] solution is as follows.
[tex]Molarity = \frac{mass}{Volume (in L)}\\2.0 M = \frac{mass}{0.25 L}\\mass = 0.5 g[/tex]
Thus, we can conclude that there are 0.5 grams of barium sulfate are present in 250 of 2.0 M [tex]BaSO_{4}[/tex] solution.
WOULD YOU BE ABLE TO FORM RUST WITHOUT OXYGEN? Explain.
Answer:
No
Explanation:
Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture.
Energy is generally released when fuel is burn with oxygen. Predict the disadvantages of burning fuels especially hydrocarbons like petrol, diesel, to the environment.
help me please:(
Answer:
It adds waste and also removes valuable recources that can't be naturally renewed. It also releases toxins and gas...
Explanation:
I don't reallly have an explenation so...
Consider the substances in the reaction: Uranium-235, Krypton-93, and Barium-140. The values of “235”, “93”, and “140” all represent what characteristic of the elements?
Answer:
Relative atomic mass
Explanation:
The subatomic particle which has the ability to transfer from one object to another, creating an
electric current, is ...
O neutron
O proton
O electron
O quark
What volume, in milliliters,
Answer:
25.4
Explanation:
PLZ mark me brainlist