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3 years ago

A nonenteric film-coated tablet is meant to dissolve in

Chemistry

1 answer:

galina1969 [7]3 years ago

3 0

It is meant to dissolve in the stomach

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What is the mass percent of chlorine in magnesium chloride?

finlep [7]

The total mass of magnesium chloride is 95.21g/mol

The mass of chlorine is 35.45g/mol

To find the mass percent of chlorine, divide its molar mass by the total mass of the substance and multiply the result by 100:
(35.45/95.21)(100)= 37.2%

4 0

3 years ago

What depends on altitude and sunlight

horsena [70]

The answer to your question is climate.

6 0

3 years ago

3.364 g of hydrated barium chloride of BaCL2.xH2O was dissolved in water and made up to a total volume of 250.0 mL. 10.00 mL of

atroni [7]

Given:

Mass of hydrated barium chloride = 3.364 g

Total volume of barium chloride V(total)= 250 ml

Volume taken for titration V = 10 ml

Volume of AgNO3 consumed = 46.92 ml

Concentration of AgNO3 = 0.0253 M

To determine:

The value of x i.e. the water of hydration in BaCl2

Explanation:

The net ionic equation is-

Ag⁺(aq) + Cl⁻(aq) → AgCl(s)

Based on the reaction stoichiometry: Equal moles of Ag+ and Cl- combine to form AgCl

Moles of Ag+ consumed = moles of Cl- present

Moles of Ag+ = V(AgNO3) * M(AgNO3) = 0.04692 * 0.0253 = 0.00119moles

Moles of Cl- present = 0.00119 moles

Thus, 0.00119 moles of Cl- are present in 10 ml of the solution

Therefore, number of moles of Cl- in 250 ml would be-

= 0.00119 * 250 /10 = 0.02975 moles of cl-

Now:

2 moles of Cl- are present in 1 mole of BaCl2

Therefore, 0.02975 moles of Cl- correspond to- 0.02975 * 1/2 = 0.01488 moles of BaCl2

Molar mass of BaCl2 = 208.22 g/mol

Thus, mass of BaCl2 = 0.01488 moles * 208.22 g.mol-1 = 3.098 g

Mass of water of hydration = 3.364 - 3.098 = 0.266 g

# moles of water 'x' = .266/18 = 0.015 ≅ 1

Ans: Formula for hydrated barium chloride = BaCl2. 1H2O

7 0

4 years ago

Write the composition of aqua Regia

DiKsa [7]

Aqua regia is a mixture of hydrochloric acid (HCl) and nitric acid (HNO 3)

4 0

3 years ago

Which of the substances below would dissociate into ions when dissolved in water? Select all that apply.

dusya [7]

Answer:

B. NaBr

D. KOH

Explanation:

Below is the solubility rules given for you knowledge.

Salts of

Group 1 elements are soluble( $Li^+, Na^+, K^+,Cs^+, Rb^+$ )
Ammonium ion is soluble ( $NH4^+$ )
The nitrate are generally soluble( $NO3^-)$

of Cl- , Br- , and I- are soluble, except Ag+ , Pb+2, and (Hg2)+2
most sulfate are soluble, except Ba+2, Ca+2,Pb+2, Ag+, Sr+2.
most hydroxide salts are only slightly soluble, except NH+4, Li+, Na+, K+
Most carbonates are insoluble (CO3 2-) Except group 1 and NH+4
most phosphate are insoluble except group 1 and NH+4

so using the rules above

NaBr , KOH are soluble, Pb(OH)2 is slightly soluble and AgCl is not soluble.

7 0

3 years ago