The law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. ... Because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products.

7 0

2 years ago

The table shows the mass and boiling point of some substances.

Westkost [7]

N is the unit of force. It stands for Newton.

M is the unit of length.

It stands for Meter.

It is the basic difference between the two units N and M.

Answer: N - Newton; M - Meter

Shoutout to: @Sidyandex

why; live

5 0

3 years ago

Calculate the pH of the 4M NaOH

krek1111 [17]

$\text{NaOH}(aq) \longrightarrow \text{Na}^{+} (aq)+ \text{OH}^{-}(aq)\\\\k_w = [\text{H}_3 \text{O}^{+}][\text{OH}^{-}]\\\\\implies 10^{-14} = [\text{H}_3 \text{O}^{+}] \cdot 4\\\\\implies [\text{H}_3 \text{O}^{+}] = \dfrac{10^{-14}}4 = 2.5 \times 10^{-15}~ M\\\\\text{pH} = -\log[\text{H}_3 \text{O}^{+}] = -log(2.5 \times 10^{-15})=14.603$

3 0

2 years ago

Read 2 more answers