[Answered] Approximately how many elements occur naturally on Earth? A) 20 B) 60 C) 90 D) ...

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waynest

Hero Member
Posts: 553

on: Aug 27, 2018

Approximately how many elements occur naturally on Earth?

A) 20
B) 60
C) 90
D) 115

Question 2

What is the mass in grams of 1.000 mole of P2O5?

A) 239.03 g
B) 61.96 g
C) 142.0 g
D) 46.98 g

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Li Jun

Sr. Member
Posts: 335

Reply #1 on: Aug 27, 2018

Answer to Question 1

C

Answer to Question 2

C

waynest

Hero Member
Posts: 553

Reply #2 on: Aug 27, 2018

Li Jun

Sr. Member
Posts: 335

Reply #3 on: Aug 27, 2018

You're welcome

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Author Question: Approximately how many elements occur naturally on Earth? A) 20 B) 60 C) 90 D) ... (Read 148 times)

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