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SashulF [63]
3 years ago
13

As a clinical chemist in charge of the testing of blood samples. You are required to mix a solution of sodium chloride with wate

r in the ratio of 2:5. =2:5 2/7 of whole solution chloride 5/7 of whole solution is water 780ml = 2/7 1/7 = 390 ml 5/7 = 1950 Total solution =2730ml 780ml = sodium chloride 1950ml = water 780:1950ml.
How do I put that in standard form and to an appropriate number of significant figures?
Physics
1 answer:
Natalka [10]3 years ago
6 0
<span>7.8x102 x 1.95x10<span>3 this is the answer mate
</span></span>
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Viefleur [7K]

Answer:

96 Joules

Explanation:

The formula for work is Fnet times displacement (F x d = w) which, in this case, 48N is the Fnet and 2m as the displacement. Then all we need to do is multiply these two and we get 96 Joules.

3 0
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A circuit contains a 1.5 volt battery and a bulb with a resistance of 3 ohms. Calculate the current
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The formula that links voltage (V), resistance (R) and current intensity (I) is

V=RI

Solve this formula for I to get

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Plug your values for V and R and you'll get the current.

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You might say that this experiment was an attempt to build a scale, and then calibrate it against a scale that we trust (the ele
Allushta [10]

No.

Since repeated measurements are taken and the average and 95% confidence interval are calculated, the possibility of the lack of agreement being a random error has been minimized or even eliminated.

<h3>What is a random error?</h3>

Random error is defined as the deviation of the total error from its mean value due to chance.

Random errors can result from the instrument not being precise or from mistakes by the researcher.

Random errors can be minimized by taking multiple readings and averaging the results.

Since repeated measurements are taken and the average and 95% confidence interval are calculated, the possibility of the lack of agreement being a ransom error has been minimized.

Learn more about random errors at: brainly.com/question/22041172

3 0
3 years ago
Read 2 more answers
How does water get to the tops of the tallest trees against the force of gravity
alexira [117]
Water gets to the leaves in the tops of the tallest trees by something called the cohesion-tension theory. Water has two very unique properties called adhesion and cohesion. Cohesion is the tendency of water molecules to stick together with one another. The water sticks together, leaving no room for air, strengthening the "force" of the water going up the tree. The water also sticks to the sides of the xylem inside the tree. In addition to these properties, there are also the factors of negative and positive water potential. For more information, look up more details of the cohesion-tension theory. 
4 0
3 years ago
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If the 50-kg crate starts from rest and achieves a velocity of v = 4 m/s
Kay [80]

Answer:

P = 227 N

Explanation:

Assuming the crate is on horizontal ground and subject to a horizontal force.

F = ma

P - μmg = ma

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P = 227 N

6 0
3 years ago
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