Brainliest and 40 points for !

question- what type of reaction is this?

h2o + cacl2 + nahco3 → caco3 + nacl + h2o + co2

a- single replacement
b- double replacement
c- combustion
d- sythesis
e- decomposition

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.