in the event of a submarine disaster the___ can be used to rescue people from the depth up to 3500 feet.

Chemistry

2 answers:

gulaghasi [49]2 years ago

6 0

DSVR because it only makes sense. Try it out and if it works give me a Brainly

Alex_Xolod [135]2 years ago

3 0

<h2>Answer:</h2>

<u>A </u><u>deep-submergence rescue vehicle (DSRV)</u><u> can be used to rescue people from the depth up to 3500 feet.</u>

<h2>Explanation:</h2>

A deep-submergence rescue vehicle (DSRV) is a type of deep-submergence vehicle used for rescue of downed submarines. While DSRV is the term most often used by the United States Navy, other nations have different designations for their vehicles too. During the trials, the DSRV also dived successfully up to 666 metres.

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4. A 0.51 kg solution contains 87 mg of potassium iodide. Calculate the W/W concentration

anzhelika [568]

Taking into account the definition of percentage composition, the percent composition of potassium iodide in this sample is 0.017%.

<h3>Definition of percent composition </h3>

The Percentage Composition is a measure of the amount of mass that an element occupies in a compound and indicates the percentage by mass of each element that is part of a compound.

To calculate the percentage of composition, it is necessary to know the mass of the element in a known mass of the compound.

<h3>Percentage Composition in this case</h3>

In this case, you know that a 0.51 kg (or 510000 mg, being 1 kg= 1000000 mg) solution contains 87 mg of potassium iodide.

Dividing the mass amount of potassium iodide present in the compound by the mass of the sample and multiplying it by 100 to obtain a percentage value, the percentage composition of potassium iodide is obtained:

$percentage composition of potassium iodide=\frac{87 mg}{510000 mg} x100$