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Daniel [21]
3 years ago
9

Which of these objects will most likely float? A. An object whose volume is greater than its mass B. A cruise ship that weighs 5

1,000 tons and would displace 50,000 tons of water if it were completely submerged C. A cruise ship that weighs 51,000 tons and would displace 70,000 tons of water if it were completely submerged D. A toy boat that weighs 2 pounds and displaces 1 pound of water if it is completely submerged
Chemistry
2 answers:
GenaCL600 [577]3 years ago
7 0

The answer is (C) : A cruise ship that weighs 51,000 tons and would displace 70,000 tons of water if it were completely submerged.

weeeeeb [17]3 years ago
6 0
I would say D. Because if you displace too much water it would would either go to fast or not move at all... that's just my thought
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padilas [110]

Answer:

0.143 g of KCl.

Explanation:

Equation of the reaction:

AgNO3(aq) + KCl(aq) --> AgCl(s) + KNO3(aq)

Molar concentration = mass/volume

= 0.16 * 0.012

= 0.00192 mol AgNO3.

By stoichiometry, 1 mole of AgNO3 reacts with 1 mole of KCl to form a precipitate.

Number of moles of KCl = 0.00192 mol.

Molar mass of KCl = 39 + 35.5

= 74.5 g/mol

Mass = molar mass * number of moles

= 74.5 * 0.00192

= 0.143 g of KCl.

4 0
3 years ago
Uranium-238 decays to lead-206 with a half-life of 4.5 x 109 yr. Determine how much uranium-238 decays in milligrams (to three s
Mamont248 [21]

Answer:

2.15 mg of uranium-238 decays

Explanation:

For decay of radioactive nuclide-

                        N=N_{0}.(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}}

where N is amount of radioactive nuclide after t time, N_{0} is initial amount of radioactive nuclide and t_{\frac{1}{2}} is half life of radioactive nuclide

Here N_{0}=4.60 mg, t=4.1\times 10^{9}yr and t_{\frac{1}{2}}=4.5\times 10^{9}yr

So,N=(4.60mg)\times (\frac{1}{2})^{\frac{4.1\times 10^{9}}{4.5\times 10^{9}}}

so, N = 2.446 mg

mass of uranium-238 decays = (4.60-2.446) mg = 2.15 mg

3 0
3 years ago
How many grams of n2f4 can be produced from 225g f2?
3241004551 [841]
The answer is 615.91 grams of <span>n2f4

Solution:
225g F2 x [(1molF2)/(38gramsF2)] x [</span>(1molF2)/(1molN2F4)] x [(104.02 grams N2F4)/(1molN2F4)]
=615.91 grams
8 0
3 years ago
When an atom undergoes beta decay, wich of the following is true?
tigry1 [53]
<span> The atomic number increases by one and the element becomes a different element. </span>
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3 years ago
A longitudinal wave passing through a medium causes areas of:
torisob [31]

Answer:

The answer is B. Compressions and rarefactions.

Explanation:

  • <u><em>Longitudinal sound waves are waves of alternating pressure deviations from the equilibrium pressure, causing local regions of compression and rarefaction.</em></u>
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2 years ago
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