2. Reproduce the following sentences as indicated in brackets: a. Let's have tea,? (Supply the correct tag)
b. My mother doesn't watch movie. (Into affirmative)
c. Rita goes to the cinema once a week. (Into 'how often' question)
d. She generally (sing) Nepali songs. But today she is
singing an
English song. (Put the verb in bracket in correct tense)
e. I asked him, "What are you doing?" (Into indirect speech)
f. I have been given this book by my sister. (Into active voice)
3. Complete the sentences below choosing suitable alternatives
from the brackets: (Rewriting is not compulsory)

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz

c)as speed changes, wavelength and frequency change.

everything changes!

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

i think they are all correct

explanation:

they seem good