Are the following equations balanced or unbalanced? 1. SnO2 + 2H2 → Sn + 2 H2O

2. 4NH3 + 5O2 → 4NO + 6H2O

3. 2B2Br6 + 5HNO3 2 B(NO3)3 + HBr

4. 2KNO3 + 1H2CO3 → 1K2CO3 + 2HNO3

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

have a great day because if you dont you and i will be sad

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer