Answer:
all of above
<h3>please please mark me as a brainliest</h3>
RMM of CaH2=20+(1x2)=22
Number of moles or formula units
=mass/RMM
=8.294/22
=0.377
Answer:
d. 10
Explanation:
The 24 means the atomic mass and twelve means the number of electrons. You subtract the number of electrons from the atomic mass. 24-12=12
Then, since there's +2, you subtract 2 from 12 which equals 10 which means there are 10 electrons now.
The confusing thing is that + means subtract and - means add here.
Hope this helps.
Answer:
I.A thiol containing reagent and Heating(gentle)
II. Disulfide bond Breaker for Keratin
III. curling the hair physically
IV.A good oxidizing agent application
V. Disulfide bonds reformer for keratin to hold the shape
Explanation:
The hair is mostly made of Keratin which is a structural proteins with about 15% cysteine
In order to change the hair appearance on the outside a reducing agent is required containing a thiol as to reduce the formation of the sulfide and disulfide bridges formation in the hair so the that any changes can be applied without the body naturally turning it back, i-e allowing easier manipulation after this hairs are to be curled physically in order to keep this a oxidizing agent is applied and then finally a keratin reformer is added to hold the shape
An electron will excite when it gets extra energy.
Explanation:
- Matters are made up of atoms and inside the atom, there is a nucleus and electrons. Nucleus has a positive charge and electron has a negative charge. The nucleus is situating at the centre of the atom and the electrons are present on the shells. These electrons having different energy levels but all the electrons are orbit the nucleus in the atom.
- Whenever an electron occupying an energy state which is larger than its ground state, then it is an excited state. Electrons will get excited when they gain some extra energy. The electron will get extra energy when they collide with the nearby particle or atoms, absorbing protons and absorbing packets of light.
