Which spacecraft exploded during flight killing all astronauts?

2 answers:

7 0

In January 1986, five astronauts and 2 other passengers were killed when the spacecraft shuttle Challenger exploded shortly after its launch. It delayed more space exploration for about 32 months, I think.

Natasha_Volkova [10]3 years ago

4 0

On January 28, 1986, the NASA shuttle orbiter mission STS-51-L and the tenth flight of Space Shuttle Challenger (OV-99) broke apart 73 seconds into its flight, killing all seven crew members, which consisted of five NASA astronauts and two payload specialists.

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A scientist is trying to determine whether a certain substance is radioactive. Which question would be most helpful to ask?

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mars1129 [50]

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Consider the reaction between reactants s and o2: 2s(s)+3o2(g)→2so3(g)if a reaction vessel initially contains 7 mols and 9 mol o

nadya68 [22]

Answer: -

1 mol

Explanation: -

Number of moles of Sulphur S = 7

Number of moles of O2 = 9

The balanced chemical equation for the reaction is

2S (s)+3 O2 (g)→2SO3(g)

From the above reaction we can see that

3 mol of O2 react with 2 mol of S

9 mol of O2 will react with $\frac{2 mol S x 9 mol O2}{3 mol O2}$

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If a reaction vessel initially contains 7 mol S and 9 mol O2

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