Answer : The formic acid pressure is, 99 torr
Explanation :
The given chemical reaction is:
Initial pressure a 0 0
At time 't' (a-x) x x
According to the Dalton's law,
.........(1)
As we are given that:
Initial pressure = a = 220 torr
Now put the value of 'a' in equation 1, we get:
Thus, the formic acid pressure is, 99 torr
D.
A more accurate answer would be -50 m/s. 50 m/s is the change in speed.
Answer: solid.
Explanation:
Precipitate is the solid substance produced during a chemical reaction carried out in a solution.
The precipitate is formed when the reactants in a chemical reaction, which are in solution, form a compound that is insoluble, and so it cannot stand dissolved but precipiates, normally going to the bottom of the vessel, in solid form.
The phases in a chemical equation are indicated using letters inside parenthesis placed to the right of the chemical formula of each compound or element.
These are the common uses: s for solid, aq for aqueous solution, l for liquid, and g for gaseous.
This is an example:
2 NaOH (aq) + CuCl₂ (aq) → 2 NaCl (aq) + Cu (OH)₂ (s)
The phases are:
- Reactant side: NaOH and CuCl₂ are dissolved in water, which is indicated by the the word aq, meaning aqueous.
- Product side: NaCl is aqueous, and Cu(OH)₂ is in solid form, meaning that it is a precipitate.
It's one ratio per substance so say if you had N2 + 3H2 > 2NH3 (chemical equation for the synthesis of ammonia) just look at the number coefficients(for 3H2 the coefficient would be 3 and for 2NH3 the coefficient would be 2 and so on)So it would take 1mole of nitrogen to react with 3 moles of hydrogen In order to produce 2 moles of ammonia so there would be 6 ratios you could write comparing two substances at a time In a reaction involving 3 substances ^^; hope this helps somewhat ^^;
Answer - A substance is matter that has a uniform and definite composition. All samples of substances, sometimes called pure substances, have identical properties.
