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aleksley [76]
3 years ago
7

How should an ethical scientist response if an experiment does not confirm a hypothesis? Question 2 options:Revise the hypothesi

s and develop a new experiment to test it.Alter the data so that they conform to what we already know.Publish the data without any conclusions.Perform the experiment again until it confirms the hypothesis.
Josh performs an experiment to see how different brands of fertilizer will affect the growth of tomato plants.  The amount of sun, amount of water, & type of soil is the same for every plant.  The only thing he changes is the type of fertilizer used on each plant.  The fertilizer is the ___________ variable.Question 12 options:independentdependentconstanthypothesis
Chemistry
1 answer:
miv72 [106K]3 years ago
7 0
For the first question, its revise the hypothesis and develop a new experiment to test it

For the second question, the fertilizer independent variable
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A sample of vinegar was found to have an acetic acid concentration of 0.8846 m. What is the acetic acid % by mass? Assume the de
jenyasd209 [6]

Answer:

5.3%

Explanation:

Let the volume be 1 L

volume , V = 1 L

use:

number of mol,

n = Molarity * Volume

= 0.8846*1

= 0.8846 mol

Molar mass of CH3COOH,

MM = 2*MM(C) + 4*MM(H) + 2*MM(O)

= 2*12.01 + 4*1.008 + 2*16.0

= 60.052 g/mol

use:

mass of CH3COOH,

m = number of mol * molar mass

= 0.8846 mol * 60.05 g/mol

= 53.12 g

volume of solution = 1 L = 1000 mL

density of solution = 1.00 g/mL

Use:

mass of solution = density * volume

= 1.00 g/mL * 1000 mL

= 1000 g

Now use:

mass % of acetic acid = mass of acetic acid * 100 / mass of solution

= 53.12 * 100 / 1000

= 5.312 %

≅ 5.3%

3 0
3 years ago
The atomic radius of a silver atom is 1.44 x 10-10. Give the
professor190 [17]

Answer:

0.144 nm

Explanation:

Silver's electronic configuration is (Kr)(4d)10(5s)1, and it has an atomic radius of 0.144 nm.

5 0
3 years ago
Where do genes come form?
postnew [5]

Answer:

im rly good with this stuff and i'm working on genetics and phenotypes and stuff.

Explanation:

information that determines your traits basically from your parents

4 0
3 years ago
Rosa was looking for patterns to help predict the products of chemical reactions. She recorded three similar decomposition react
Luda [366]

Answer:

Hi! I need to talk to u asap

Explanation:

8 0
3 years ago
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[03.04]When one atom of potassium (K) combines with one atom of fluorine (F), an ionic bond forms, resulting in potassium fluori
dybincka [34]
Heyo, I believe that the answer would be D. The valence electrons are given up by the K and gained by the F.
3 0
3 years ago
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