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elena-14-01-66 [18.8K]
3 years ago
13

How many days are really in a year

Chemistry
2 answers:
Furkat [3]3 years ago
8 0
<span>Day of year is a number between 1 and 365 (January 1 is day 1).</span>
Dimas [21]3 years ago
7 0
Its actually 356 and 1/4 days. thats why we have leap year!
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An element consists of two isotopes. One with a mass of 79.95 amu and an abundance of 29.9%. The second isotope has a mass of 81
galina1969 [7]

 the molar  mass of the element  is  81.36 g/mol

<u><em>calculation</em></u>

step 1 : multiply  each %abundance  of the isotope  by   its mass  number

that is 79.95 x 29.9 =2391

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5 0
3 years ago
Which of the following might be an indicator of global warming?
kolbaska11 [484]

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6 0
3 years ago
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charle [14.2K]

Answer:

radiation and conduction

Explanation:

During a warm summer day, a car became extremely hot. When a student went to open the car door, he burned his fingers. What two forms of energy were responsible for the student burning his fingers?

Solution:

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3 years ago
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