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3 years ago

Which of the following best describes the difference between a theory and a law

Chemistry

2 answers:

masya89 [10]3 years ago

8 0

A theory may not be right, but a law is. :)

Marina CMI [18]3 years ago

6 0

A scientific theory is not a wild guess. It must be consistent with known experimental results and it must have predictive power. As new knowledge is gained,theories are refined to better explain the data. A law is a mathematical relationship that is consistently found to be true.

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Ocean water contains 3.5 % NaCl by mass. What mass of ocean water in grams contains 46.8 g of NaCl?

Luda [366]

Answer:

1.3 kg

Explanation:

Mass of ocean water = mass of NaCl × (mass of ocean water/mass NaCl).

The % NaCl tells us there are 3.5 g NaCl/100 g ocean water or 100 g ocean water/3.5 g NaCl.

Mass of ocean water = 46.8 × (100/3.5)

Mass of ocean water = 46.8 × 28.6

Mass of ocean water = 1300 g = 1.3 kg

Note: The answer can have only two significant figures because that is all you gave for the percentage of NaCl.

5 0

4 years ago

What is Type of compound of ICI

valentina_108 [34]

Answer:

ICI 204448 hydrochloride | C23H27Cl3N2O4 | CID 129407 - structure, chemical names, physical and chemical properties, classification, patents, literature, etc...

hope this helps!! have an amazing day <3

8 0

3 years ago

Read 2 more answers

What is the structural formula of pent-3-en-1-yl? Thx

krek1111 [17]

Happy birthday girl i’m love you too bye mommy love you mommy bye bye merry christmas

3 0

3 years ago

How many km are in 5.6mm? 5.6x103 5.6x10-6 5.6x10-3 5.6x106

il63 [147K]

Hey there :)

Question: How many km are in 5.6mm?

=>5.6x10^3

=>5.6x10^-6

=>5.6x10^-3

=> 5.6x10^6

Answer:-

$5.6 \times 10^{ - 6}$

Explanation:-

By using the formula-

$1millimeter = \frac{1}{1000000}$

As 1 with 6 zeros, we convert it into exponential form.

$= > \frac{1}{10^{6} }$

As this above value is fraction type, we can do the reciprocal, thus, the exponent gets a negative value.

$= > 10^{ - 6}$

Now combine with given question.

$= > 5.6 \times 10^{ - 6}$

7 0

2 years ago

The chemical equation below shows the reaction of sodium (Na)and chlorine (CI)to form sodium chloride (NaCI)

SashulF [63]

In all chemical equations, regardless of the type of reaction that is occurring, the reagents that are on the left side of the arrow are the reactants and on the right your products.

B. Is the solution.

7 0

3 years ago