Answer:
HgS
Explanation:
In a 0.350g-sample there are 0.302 g of Hg. Then, there is 0.350 g - 0.302 g = 0.048 g of S. To calculate the empirical formula, we have to follow a series of steps.
Step 1: Calculate the percent composition
Hg: (0.302 g / 0.350 g) × 100% = 86.3%
S: (0.048 g / 0.350 g) × 100% = 13.7%
Step 2: Divide each percentage by the atomic mass of the element
Hg: 86.3 / 200.59 = 0.430
S: 13.7 / 32.07 = 0.427
Step 3: Divide the numbers by the smallest one
Hg: 0.430/0.427 ≈ 1
S: 0.427/0.427 = 1
The empirical formula is HgS.
I think the answer is 25,200 J (or 25.2 kJ)
Could you put me as brainliest?
HCl Acid + Sodium Hydroxide ----> Sodium Chloride + water.
<u>Explanation</u>:
- The reaction between an acid and a base is known as a neutralization reaction. The reaction of an acid with a base to give salt, water and heat is called neutralization.
- When hydrochloric acid reacts with sodium hydroxide, sodium chloride and water are produced.
HCl + NaOH → NaCl + H2O + Heat
- The heat evolved in the neutralization reaction raises the temperature of the reaction mixture.
- An electro-electrodialysis process (EED) is utilized to create HCl and NaOH from exchange NaCl. NaOH and HCl arrangements with purity higher than 99.9% are acquired. The experimental estimations of the transitions for HCl and NaOH are contrasted and values determined from the incorporation of the Nernst–Planck electro dispersion conditions.
. What is electronegativity?
2. compare polar and non-polar molecules.
3. Explain and give examples of covalent bonds, polar covalent bonds, and ionic bonds.
4. Why do Non-Polar molecules not mix with water?
<span> 5. How does soap work?</span>
Get the molar mass of each element and since there are two S for each Br, make it 2x32.06 + 1x79.90 and then for S2, you would get 64.12/144.02 which is 44.52% S2 and then 55.48% Br