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6 Answered Questions for the topic Atomic mass

Atomic Mass

09/19/18

Oxygen has three stable isotopes. What can you determine about the average atomic mass without calculating it?

Oxygen-16      0.99757 Oxygen-17      0.00038 Oxygen-18      0.00205
Atomic Mass Chemistry Mixtures

12/08/17

Can someone help me with these two chemistry problems?

I'm having trouble with them and idk what to do   2. A student has identified a material as a mixture. What is the minimum number of distinct substances that the student has detected in the... more
Atomic Mass Math Science

09/28/17

Chemistry Help ?

 Calculate the average atomic mass for imaginary element “W” given the following information. There are 2 isotopes of this element, having atomic masses of 76.14 amu and 78.52 amu. The abundance of... more
Atomic Mass Chemistry Average

10/22/16

Explain how average atomic mass is calculated?

Explain how average atomic mass is calculated?
Atomic Mass Chemistry Atomic Number

08/30/16

Why can the atomic number be used to identify an element but the neutron number cannot? Can the mass number be used to identify an element?

 Why can the atomic number be used to identify  an element but the neutron number cannot? Can the mass number be used to identify an element?
Atomic Mass Science Chemistry

10/14/15

I need help with my chemistry assignment

Hi. I do sit-ins at my mum's university because she wanted me to excel in chemistry but I'm only in 8th grade and the lectures my professor gives are in advanced levels. I'm forced to take exams... more

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