Why might a scientist repeat an experiment if she did not make a mistake in the first one?

1 answer:

3 0

The reason that a scientist might repeat her experiment, even if she did not make a (visible) mistake in the first one is to double check. Double checking can help you find out if the answer is constant and reliable, allowing you're information to be more trustworthy.

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A car traveled 1500 km from Dallas to Shreveport in 4 hours. What is its average speed?

Gennadij [26K]

Answer:

$\frac{1500 \: km}{4 \: hours} = 375 \: km \: per \: hour.$

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2 years ago

An ionic bond occurs between what particles

kakasveta [241]

<span>The correct answer is that an ionic bond forms between charged particles. To form this bond, the particles transfer valence electrons (those in the outermost orbit). Specifically, in ionic bonding, the metal atom loses its electrons (thus becoming positive) and the nonmetal atom gains electrons (thus becoming negative).</span>

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3 years ago

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What are three similarities between biotic and abiotic factors?

Viktor [21]

1. Both part of the ecosystem
2. There are biotic objects on abiotic objects ( caterpillars on trees ) and abiotic objects on biotic things ( pollen on bees )
3. Both are made of atoms

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3 years ago

A naoh (aq) stock solution was created by dissolving 3.88 g naoh in water to create a 100.00 ml solution. what is the concentrat

Bess [88]

0.0381g/mL will be concentration of this solution

The ratio of a solute—a substance that dissolves—to a solvent—a substance that does not dissolve—determines the concentration of a solution in chemistry. C = m/V, where C is the concentration, m is the mass of the solute dissolved, and V is the overall volume of the solution, is the accepted formula.

How to reach the solution?

First find for the density of NaOh which is 2.13 g/cm3

3.88 ÷ 2.13 = 1.82mL

100mL + 1.82mL = 101.82mL

3.88 ÷ 101.82mL = 0.0381g/mL

More about NaOh:

The extremely adaptable chemical sodium hydroxide (NaOH), sometimes referred to as caustic soda or lye, is employed in a range of manufacturing processes. A byproduct of the manufacturing of chlorine is sodium hydroxide. Numerous items that are used on a daily basis, including paper, metal, drain and oven cleansers for industry, soap, and detergents, are made with sodium hydroxide.

Learn more about Naoh here:

brainly.com/question/3366922

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5 0

2 years ago

I need the answers? Pls help!

Vesnalui [34]

Im pretty sure its h2o so like the 2nd one

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3 years ago