Exodus 25:3

25:3 This is the offering you ¹  are to accept from them: gold, silver, bronze,

Exodus 38:29

38:29 The bronze of the wave offering was seventy talents and 2,400 shekels. ² 

[25:3]  ¹ tn The pronoun is plural.

[38:29]  ² sn The total shekels would have been 212,400 shekels, which would be about 108,749 oz. This would make about 2.5 to 3 tons.