Answer:
I can be your boy bsf : )
Explanation:
im also 15 , chill, takes jokes rlly well(even if it is sarcastic),bit shy sometimes, and I’ll support you all the way
Amphetamine was developed initially as a substitute for a closely-related chemical derived from the Chinese herb ma huang. That chemical is Ephedrine.
<h3>
What is Ephedrine?</h3>
Ephedrine is a stimulant medication that can be considered an amine chemical compound and substituted amphetamine.
Ephedrine is used in sports to stimulate the central nervous system (C_NS) and as energy supplier.
Ep_hedrine use is prohibited and chronic usage of this substance may have problems the health.
Learn more about Ephedrine here:
brainly.com/question/1122074
Answer:
A safety pin
Explanation:
Rubber, plastic and food are all non-metals, meaning they are poor conductors of heat and electricity. However, safety pins are made up of steel - a metal - making them good conductors.
<u> There are more total ions in 2.2 moles of </u>![MgCl_2](https://tex.z-dn.net/?f=MgCl_2)
<h3>What are ions?</h3>
Ion, any atom or group of atoms that bears one or more positive or negative electrical charges. Positively charged ions are called cations; negatively charged ions, anions.
Ions are formed by the addition of electrons to, or the removal of electrons from, neutral atoms or molecules or other ions; by combination of ions with other particles; or by rupture of a covalent bond between two atoms in such a way that both of the electrons of the bond are left in association with one of the formerly bonded atoms.
Examples of these processes include the reaction of a sodium atom with a chlorine atom to form a sodium cation and a chloride anion; the addition of a hydrogen cation to an ammonia molecule to form an ammonium cation; and the dissociation of a water molecule to form a hydrogen cation and a hydroxide anion.
Learn more about ions
brainly.com/question/13692734
#SPJ4
Answer:
18.0 Ampere is the size of electric current that must flow.
Explanation:
Moles of electron , n = 550 mmol = 0.550 mol
1 mmol = 0.001 mol
Number of electrons = N
![N=N_A\times n](https://tex.z-dn.net/?f=N%3DN_A%5Ctimes%20n)
Charge on N electrons : Q
![Q = N\times 1.602\times 10^{-19} C](https://tex.z-dn.net/?f=Q%20%3D%20N%5Ctimes%201.602%5Ctimes%2010%5E%7B-19%7D%20C)
Duration of time charge allowed to pass = T = 49.0 min = 49.0 × 60 seconds
1 min = 60 seconds
Size of current : I
![I=\frac{Q}{T}=\frac{N\times 1.602\times 10^{-19} C}{49.0\times 60 seconds}](https://tex.z-dn.net/?f=I%3D%5Cfrac%7BQ%7D%7BT%7D%3D%5Cfrac%7BN%5Ctimes%201.602%5Ctimes%2010%5E%7B-19%7D%20C%7D%7B49.0%5Ctimes%2060%20seconds%7D)
![=\frac{n\times N_A\times 1.602\times 10^{-19} C}{49.0\times 60 seconds}](https://tex.z-dn.net/?f=%3D%5Cfrac%7Bn%5Ctimes%20N_A%5Ctimes%201.602%5Ctimes%2010%5E%7B-19%7D%20C%7D%7B49.0%5Ctimes%2060%20seconds%7D)
![I=\frac{0.550 mol\times 6.022\times 10^{23} mol^{-1}\times 1.602\times 10^{-19} C}{49.0\times 60 seconds}=18.047 A\approx 18.0 A](https://tex.z-dn.net/?f=I%3D%5Cfrac%7B0.550%20mol%5Ctimes%206.022%5Ctimes%2010%5E%7B23%7D%20mol%5E%7B-1%7D%5Ctimes%201.602%5Ctimes%2010%5E%7B-19%7D%20C%7D%7B49.0%5Ctimes%2060%20seconds%7D%3D18.047%20A%5Capprox%2018.0%20A)
18.0 Ampere is the size of electric current that must flow.