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3 years ago

A new concept that is tested in a scientific investigation is known as

2 answers:

4 0

Answer : Hypothesis - When a new concept that is tested in a scientific investigation is used it is called as hypothesis.

Explanation : Hypothesis is defined as supposition or proposed explanation made on the basis of limited evidence, which acts as a starting point for any further investigation on a particular topic.

When a scientific investigation is conducted there is a quest to find the best possible answer to a question, using a scientific method.

In turn, the scientific method is defined as a systematic process in which it involves using measurable observations to formulate, test or modify a hypothesis.

kow [346]3 years ago

3 0

Hypothesis is the answer, because it is a possible explanation to a problem or question that you can test by using an experiment.

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Which of the following reactions is an example of a single replacement reaction?

qwelly [4]

Answer:

Explanation:

This is the only reaction where a element is displaced out of a solution and turn a soild, due to it been less reactive than the other causing its displacement The electrochemical series can be used as reference.

4 0

3 years ago

4.07 x 10-17<br> (5.6 x 10") (5.8 x 105)

Andrej [43]

4.07 x 10-17 = 23.7
(5.6 x 10”) (5.8 x 105)= log(100)
log(7)
Hope this helped

3 0

2 years ago

What is a climograph

Otrada [13]

A climograph is a dual-purpose graph, showing two different kinds of information. A bar graph shows how much precipitation a given place receives during a period of time. A line graph shows the temperature conditions for the same place during the same period of time.

8 0

3 years ago

1. How many ATOMS of boron are present in 2.20 moles of boron trifluoride ? atoms of boron.

maks197457 [2]

Answer:

1. How many ATOMS of boron are present in 2.20 moles of boron trifluoride? atoms of boron.

2. How many MOLES of fluorine are present in of boron trifluoride? moles of fluorine.

Explanation:

The molecular formula of boron trifluoride is $BF_3$ .

So, one mole of boron trifluoride has one mole of boron atoms.

1. The number of boron atoms in 2.20 moles of boron trifluoride is 2.20 moles.

The number of atoms in 2.20 moles of boron is:

One mole of boron has ---- $6.023x10^2^3$ atoms.

Then, 2.20 moles of boron has

- $=2.20 mol. x 6.023 x 10^2^3 atoms /1 mol\\=13.25x10^2^3 atoms$

2. Calculate the number of moles of BF3 in 5.35*1022 molecules.

$(5.35x10^2^2 molecules/6.023x10^2^3)x 1mol\\=0.0888mol$

One mole of boron trifluoride has three moles of fluorine atoms.

Hence, 0.0888moles of BF3 has 3x0.0888mol of fluorine atoms.

=0.266mol of fluorine atoms.

5 0

2 years ago

How many bromine atoms are present in 39.4 g of CH2Br2

strojnjashka [21]

37.8 g CH2Br2 X (1 mol CH2Br2 / 173.83 g) = 4.60X10^-3 mol CH2Br2

<span>4.60X10^-3 mol CH2Br2 X (2 mol Br / 1 mol CH2Br2) X 6.02X10^23 atoms/mol = 5.54X10^21 bromine atoms</span>

7 0

3 years ago