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3 years ago

The molar mass of SO3 is grams. in significant figures

Chemistry

2 answers:

Vikentia [17]3 years ago

6 0

Answer:

80.066 g/mol

Explanation:

I looked it up

Elanso [62]3 years ago

4 0

Answer:

80.06

Explanation:

The molar mass of SO3 is the sum of the molar masses of the elements S and O:

32.06 g/mol + (15.999 g/mol × 3) = 80.06 g/mol.

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Answer:

Explanation:

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3 years ago

Consider the nuclear equation below. Superscript 235 subscript 92 upper U right arrow superscript 4 subscript 2 upper H e. What

coldgirl [10]

Answer:

$\rm_{90}^{231}\text{Th}$

Explanation:

The unbalanced nuclear equation is

$\rm _{92}^{235}\text{U} \longrightarrow \, _{2}^{4}\text{He} + X$

Let's write X as a nuclear symbol.

$\rm _{92}^{235}\text{U} \longrightarrow \, _{2}^{4}\text{He} + _{Z}^{A}\text{X}$

The main point to remember in balancing nuclear equations is that the sums of the superscripts and of the subscripts must be the same on each side of the reaction arrow.

Then

235 = 4 + A , so A = 235 - 4 = 231, and

92 = 2 + Z , so Z = 92 - 2 = 90

And your nuclear equation becomes

$\rm _{92}^{235}\text{U} \longrightarrow \, _{2}^{4}\text{He} +\, _{90}^{231}\text{X}$

Element 90 is thorium, so

$\rm X = _{90}^{231}\text{Th}$

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3 years ago

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NNADVOKAT [17]

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It has been proposed that North America is moving west at about 2 cm per year. How many kilometers would it move in 5,000 years?

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