Is 4si2h3 + 11o2=8sio2+6h2o balanced

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]