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wlad13 [49]
3 years ago
10

An astronaut is free-floating in space near a space station and it is not tethered to anything. He has some tools and a fire ext

inguisher. Which action would propel the astronaut back toward the space station? Select all that apply. A. he could throw a tool in the opposite direction of the space station. B. He could throw a tool at the space station C. He could roll toward the space station D. He could spray the fire extinguisher in the opposite direction of the space station select all that are correct there might be more than one answer
Chemistry
2 answers:
worty [1.4K]3 years ago
7 0

Hey there

the answers are

A.

and

D. He could spray the fire extinguisher in the opposite direction of the space station


hope this helps

kogti [31]3 years ago
7 0

the answer is D. He could spray the fire extinguisher in the opposite direction of the space station.  hope this helps you !

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const2013 [10]

Answer:

4.4 g

Explanation:

Step 1: Write the balanced equation

Cu + 4 HNO₃ ⇒ Cu(NO₃)₂ + 2 NO₂ + 2 H₂O

Step 2: Calculate the moles corresponding to 3.2 L of NO₂ at STP

At standard temperature and pressure, 1 mole of NO₂ occupies 22.4 L.

3.2 L × 1 mol/22.4 L = 0.14 mol

Step 3: Calculate the moles of Cu needed to produce 0.14 moles of NO₂

The molar ratio of Cu to NO₂ is 1:2. The moles of Cu needed are 1/2 × 0.14 mol = 0.070 mol.

Step 4: Calculate the mass corresponding to 0.070 moles of Cu

The molar mass of Cu is 63.55 g/mol.

0.070 mol × 63.55 g/mol = 4.4 g

5 0
3 years ago
the recommended adult dose of Elixophyllin ® , a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in mi
Paladinen [302]

Answer:

\boxed{\text{452 mg}}

Explanation:

(a) Convert pounds to kilograms.

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(b) Calculate the dose

\text{Dose} = \text{ 75.30 kg body mass} \times \dfrac{\text{6.00 mg Elixophyllin}}{\text{1 kg body mass}} = \textbf{452 mg Elixophyllin}\\\text{The dose of Elixophyllin for a 166 lb person is $\boxed{\textbf{452 mg}}$}

3 0
3 years ago
How many atoms are there in 10.2 moles of Phosphorous?​
nikdorinn [45]

There are 2.06 x 10²⁴ atoms

<h3>Further explanation </h3>

The mole is the number of particles (atoms, molecules, ions)contained in a substance

1 mol = 6.02.10²³  particles

Moles can also be determined from the amount of substance mass and its molar mass

  • number of atoms :

\tt 10.2\times 6.02\times 106{23}=2.06\times 10^{24}

5 0
3 years ago
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lord [1]

Answer:

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Explanation:

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Answer:

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