it

i need some help and answers... research... suggestions for this Q: how have the enviromental issues changed over time? please answer. i need help for a report. ive got more but first i gotta find this 1.

To 90.0mL of a solution that contains 0.100M Cr(NO3)2 and 0.490M HNO3 is added 30.0mL of 0.170M K2Cr2O7. The dichromate and chromium(II) ions react to give chromium(III) ions. Write a balanced net ionic equation for the reaction.

What is the molar mass of an acid if 0.422 g of the acid are neutralized by 17.5 mL of 0.268 M NaOH? NAOH: 0.268*1000/17.5=15.3 Acid:0.422/0.268=1.57 mr I think

false

its b ,d ,1,4,7

thx conexus user

The ratio of net force to acceleration is constant across all objects

what up my dudes!

1. B. Impulse = Force × Time 2. A. The momentum of each ball changes, and the total momentum stays the same 3. -55 kg·m/s 4. B. 3.5 kg 5. C. 6.3 m/s

^Well someone had to say it