[ Na2CO3 (s) +
2_HCI (aq) - 2 _NaCl (aq) + H20 (1) + CO2 (g)
Name the substance produced as a gas.

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c

In a laboratory determination of the atomic weight of tin, a sample of tin is weighed in a crucible. nitric acid is added, and the reaction proceeds to give a hydrated tin(iv)oxide plus no2and h2o. the hydrated tin(iv)oxide is then heated strongly and reacts as follows: sno2.xh2o(s)sno2(s)+ xh2o(g)the sno2is finally cooled and weighed in the crucible. explain the effect on the calculated atomic weight of tin that would result from each of the following experimental errors: (a)considerable spattering occurs when the nitric acid is added to the tin.(b)the hydrated tin(iv)oxide is not heated sufficiently to change it completely to tin oxide.