2. Bells used in temples aren't made up of wood because wood isn't sonorous and hence can't produce ringing sound, and hence metals are used in making bells.

3. phosphorous is kept in water because it is highly reactive and reacts vigorously with air if left free in atmosphere .

a.) CuSO4 + Mg =》MgSO4 + Cu

this is a single displacement reaction, where Magnesium being more reactive than Copper, displaces copper from its compound (copper sulphate) to form magnesium sulphate.

b. H2SO4 + Zn =》ZnSO4 + H2

this is a single displacement reaction,

where Zinc being more reactive than

hydrogen, displaces hydrogen from its

compound (sulphuric acid) to form Zinc sulphate.

8 0

2 years ago

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Round to the nearest tenth if necessary.

kenny6666 [7]

Answer:

12.1

Step-by-step explanation:

=(−2−9)2+(7−12)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√

=(−11)2+(−5)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾√

=121+25‾√

=1√46

=12.083046

4 0

3 years ago

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