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Elza [17]
3 years ago
7

What is the correct answer in scientifie notation?9.84.3x104.6x10Select one:O a. 198 e 15.8O b. 198 e 16.8O C. 198 e 1.80d. 1980

e 15.8

Chemistry
1 answer:
Nata [24]3 years ago
6 0
To answer this problem, we multiply first the given figures above, 4.3x10^9.8  and 4.6 x10^7. the answer or the product of these figures is 19.8 x10^16.8. We add both exponents to get 16.8 and multiply both coefficents to get 19.8. The answer to this problem is A. 198x10^15.8
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The deepest trench in the world is 11,000 m in depth. Assuming sea water to have a constant density of 1050 kg/m, determine the
Vanyuwa [196]

Answer:

113406825 N/m²

Explanation:

The pressure at depth of 11,000 m can be calculated by:

Pressure = Atmospheric pressure + Pressure  due to height

Atmospheric pressure = 101325 N/m²

Also,  

P_{height}=\rho\times g\times h

Where,  

\rho is the density of water (\rho=1050\ kg/m^3)

g is the gravitational acceleration = 9.81 m/s²

h = 11,000 m

P_{height}=1050\ kg/m^3\times 9.81\ m/s^2\times 11000\ m

Pressure  due to height = 113305500 N/m²

<u>Pressure = Atmospheric pressure + Pressure  due to height = 101325 N/m² + 113305500 N/m² = 113406825 N/m²</u>

5 0
3 years ago
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The fuel used to power the booster rockets on space shuttles is a mixture of aluminum metal and ammonium perchlorate. the follow
Charra [1.4K]

The moles of water that are produced from 373 moles of ammonia present in any chemical reaction is 746 moles.

<h3>What is the stoichiometry?</h3>

Stoichiometry of the reaction gives idea about the amount of entities present in any chemical reaction before and after the reaction.

Given chemical reaction is:

3Al + 3NH₄ClO₄ → Al₂O₃ + AlCl₃ + 3NO + 6H₂O

From the stoichiometry of the reaction it is clear that:

3 moles of Al = produces 6 moles of H₂O

373 moles of Al = produces 6/3×373 = 746 moles of H₂O

Hence required moles of water is 746 moles.

To know more about stoichiometry, visit the below link:

brainly.com/question/21931988

                                                                                                                                                                                                                                                                                                                               

6 0
2 years ago
Which describes a chemical property of<br> copper
irga5000 [103]

Answer:

Atomic number 29

Atomic mass 63.546 g.mol -1

Electronegativity according to Pauling 1.9

Density 8.9 g.cm-3 at 20°C

Melting point 1083 °C

8 0
3 years ago
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Hi can u help me with this?
xxTIMURxx [149]

Answer:

evaporation

Explanation:

When water absorbs enough heat, it becomes a gas (water vapor). This process is called evaporation

4 0
3 years ago
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What is the molar mass of a substance?
Blizzard [7]
 The molar mass of a substance is 47.88 g/mol because in Titanium there is 47.88 g/mol <span> there is one mole, or 6.022 x 10</span>23<span>titanium atoms.</span>
7 0
4 years ago
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