Download the Guru IA app
Android and iOS
Josevaldo
Qual é o número atômico (Z) e o número de massa (A) de átomo...
Ask a question and receive an answer instantly
Send your questions through the App
Scan the QR Code and download for free
Do you prefer an expert tutor to solve your activity?
- Receive your completed work by the deadline
- Chat with the tutor.
- 7-day error guarantee