The latent heat is correlated with energy as follows:
Q = mL
550 * 103 = 14 * 103 * L
L = 39.285 J /g
Thus, latent heat of the substance is 39.285 j /g
Answer:
0.375 moles of CaCO₃ are required
Explanation:
Given data:
Number of moles of sulfamic acid = 0.75 mol
Number of moles of calcium carbonate required = ?
Solution:
Chemical equation:
2H₃NSO₃ + CaCO₃ → Ca(SO₃NH₂)₂ + CO₂ + H₂O
Now we will compare the moles of H₃NSO₃ and CaCO₃ .
H₃NSO₃ : CaCO₃
2 : 1
0.75 : 1/2×0.75 = 0.375 mol
Thus, 0.375 moles of CaCO₃ are required.
Answer:
This question is incomplete
Explanation:
This question is incomplete as the volume of the base that was used during the titration was not provided. However, the completed question is in the attachment below.
The formula to be used here is CₐVₐ/CbVb = nₐ/nb
where Cₐ is the concentration of the acid = unknown
Vₐ is the volume of the acid used = 25 cm³ (as seen in the question)
Cb is the concentration of the base = 0.105 mol/dm³ (as seen in the question)
Vb is the volume of the base = 22.13 cm³ (22.1 + 22.15 + 22.15/3)
nₐ is the number of moles of acid = 1 (from the chemical equation)
nb is the number of moles of base = 2 (from the chemical equation)
Note that the Vb was based on the concordant results (values within the range of 0.1 cm³ of each other on the table) of the student
Cₐ x 25/0.105 x 22.13 = 1/2
Cₐ x 25 x 2 = 0.105 x 22.13 x 1
Cₐ x 50 = 0.105 x 22.13
Cₐ = 0.105 x 22.13/50
Cₐ = 0.047 mol/dm³
The concentration of the sulfuric acid is 0.047 mol/dm³
Answer: Electrochemical oxidation of metal in reaction with an oxidant such as oxygen or sulfates is the step of corroding iron...(sorry if it is wrong)
Tris (as a pure compound normally supplied) is a base and its aqueous solutions are alcaline. It is not a buffer sensu stricto. To accumulate a buffering ability it sould be in equilibrium with the corresponding acid which is the protonated structure of Tris.
<h3>Is Tris damaging to humans?</h3>
The following acute (short-term) fitness consequences can also occur straight away or rapidly after publicity to Tris (2,3- Dibromopropyl) Phosphate: * Contact can irritate the pores and skin and eyes. * Tris (2,3-Dibromopropyl) Phosphate is a PROBABLE CARCINOGEN in humans.
<h3>Is Tris base toxic?</h3>
tris(hydroxymethyl)aminomethane
Potential Adverse human fitness effects and signs : Practically non-toxic. Non-toxic if swallowed (LD50 oral, rat > 5000 mg/kg). Non-toxic in contact with skin (LD50 skin> 5000 mg/kg). Not irritant to skin.
Learn more about TRIS here:
<h3>
brainly.com/question/27390164</h3><h3 /><h3>#SPJ4</h3>
