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2 years ago

GIVING OUT BRAINLIEST ANSWERR HELP ME QUICK PLLSSSSS ITS ALMOST DUE HELPP !!!

Mathematics

1 answer:

ELEN [110]2 years ago

6 0

Answer:

90°

Step-by-step explanation:

Thales Theorem

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sammy [17]

Answer:

Step-by-step explanation:

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2 years ago

What is the mass (in grams) of 8.11×1026 CO2 molecules?

Kobotan [32]

Answer:

It is 59,275.74 grams

Step-by-step explanation:

• Molecular mass of carbon dioxide

$= (12 \times 1) + (16 \times 2) \\ = 12 + 32 \\ = 44 \: g$

[ molar masses: C = 12 g, O = 16 g ]

• From avogadro's number, it says 1 mole contains 6.02 × 10^23 molecules or atoms.

But 1 mole is equivalent to its molar mass in terms of weight, therefore;

${ \sf{6.02 \times {10}^{23} \: molecules = 44 \: g }}\\ { \sf{8.11 \times {10}^{26} \: molecules =( \frac{8.11 \times {10}^{26} }{6.02 \times {10}^{23} } \times 44) \: g}} \\ \\ = { \boxed{ \boxed{ \bf{59275.7 \: \: g}}}}$

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3 years ago

Which expressions are equivalent to 7x – 14? Check all that apply.

makvit [3.9K]

Answer:

Answer is 3x – 14 + 4x

3x – 14 + 4x = 7x - 14

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

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2 years ago

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