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Answered by dadasalunke4747
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Answer:

7.0 mL of a 3.65 g/dL HCl was used to titrate 5.0 mL of Ca(OH)2. What is the mol/L concentration of the base?[a] 30.0 g of Ca is added to 30.0 g of water and allowed to react according to the

following equation:

Ca(s) + 2H2O(l) + Ca(OH)2(aq) + H2(g)

[i] Calculate the amount in mole of each reactant.

[ii] Which reactant is the limiting reagent?

[iii] What is the mass of the Ca(OH)2 formed?

[b] Calculate the energy and frequency of radiation emitted when an electron in

hydrogen atom returns from 5th energy level to 2nd energy level.1. Draw the electronic dot structure of following compound and identify the anions and cations

a. Mg and Cl

b. Na and F

c. Al and Cl

d. Ca and O

e. Ca and Cl

f. K and O

g. Mg and O

शब्दों की शुद्ध वर्तनी ( मानक रूप) लिखिए.

1. ऐनक। २. अध्ययन।

३. पशु।

५ उजार।

६ आगामी।

७ अनुकूल3. निम्नलिखित शब्दों को उनके अर्थ से मिलाइए:

अर्थ

(क) उकेरना

कड़वापना, कटुता

यहाँ लिखिए

(ख) नफ़ीस

• साम्राज्य

(ग) पुश्तैनी

• जाँच-पड़ताल

(घ) तल्खी

• नक्काशी करना

(ङ) मुआयना

• साहस

(च) जुर्रत

• कलाकार

(छ) बदहवासी

बढ़िया, सुंदर

(ज) फ़नकार

• सयाना, आदमी

(झ) सल्तनत

कई पीढ़ियों से चले आना

(ब) वयस्क

• घबराहट

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