6 ACTIVATE Write present simple and present continuous questions using the words in the
box and your own ideas. Then ask and answer
the questions with a partner.
are does what dinner your sister
you the washing-up why talk to
who your parents how often do
the shopping when make where
your brother study
How often does your sister make dinner?

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bilayenot

Химия

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1)2hcl+cu=cucl2+h2 cucl2+ba(oh)2=cu(oh)2+bacl2 bacl2+na2so4=2nacl+baso4 nacl+agno3=agcl+nano3 2)(nh4)2co3+2hcl=2nh4cl+co2+h2o nh4cl=nh3+hcl 2nh3+h2so4=(nh4)2so4 (nh4)2so4+ba(no3)2=2nh4no3+baso4 3)2so2+o2=2so3 so3+mgo=mgso4 mgso4+k2co3=mgco3+k2so4 k2so4+pb(no3)2=2kno3+pbso4