40 g glucose
Explanation:
I have to assume that you are asking about a 2% m/v solution ( Note that specifying 2% in isolation has no meaning )
2% m/v glucose solution is : 2 g glucose in 100 mL solution
Which is ( multiply by 10): 2% m/v = 20 g glucose in 1000 mL ( = 1.0 L) solution
And so 2%m/v = 40 g glucose in 2000 mL or 2.0 L solution
Answer: 40 g glucose.
We are given with the titration with <span> 0.100 M NaOH obtained at 15.00 mL. The moles equivalent of HCl here is equal to 0.1*15x10^-3 or 0.0015 moles. This is equivalent to 0.055 grams HCl. the percent purity then is equal to 0.055/0.5725 or 9.55%.</span>
Answer:
Chemical reactions takes place
Explanation:
Chemical energy stored in bonds of chemical compound are released when chemical reactions takes place.
Chemical energy is a form of potential energy that is found in chemical bonds.
- When chemical reactions occur, bonds are broken and formed again.
- The process of breaking and forming new bonds releases chemical energy.
- In this manner most chemical reactions are often accompanied by energy changes
- The energy changes is due to the formation of new bonds.
An ionic compound is a chemical compound dissociated into positive and negative ions, but globally neutral (it is a bond that usually involves a metal).
A covalent bond is a bond in which two valence electrons are shared between two non-metals (which is often the case in organic substances). In this type of bond, there must be an electronegativity difference of less than 1.7 on the Pauling scale.
Returning to the question, the first question to investigate is if the substance is simple or compound (all of them are compound).
The next question for the substances is if there's a metallic atom or a carbon atom in the substance.
The next investigation is a confirmation, by calculating the electronegativity difference between the atoms in the substances according to Pauli's scale. If it's under 1.7, it's a covalent bond, so a covalent compound. if not it's an ionic bond, so an ionic compound.
If temp increases/decreases, then chem weathering increases/decreases because temp is a catalyst