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Deffense [45]
3 years ago
7

7. What is the difference between a measured value and an accepted value? How are these values used to determine the precision o

f your answer?
Chemistry
1 answer:
vekshin13 years ago
6 0
The measured value is the value you get when you do the experiment, it is also called an experimental value. the accepted value is the value that is accepted by scientists (it usually comes up when you Google the value of something).

These value are used to calculate percent error.

% error = | Accepted value - Measured Value | / Accepted value × 100
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When sudden changes occurs in the body. lack of blood flow in the brain
6 0
3 years ago
You are asked to weigh approximately 0. 4g of acetylsalicylic acid to the nearest mg. When you enter the data in grams in your l
krok68 [10]

Number of significant figures will be 1

Given:

weight of acetylsalicylic acid = 0. 4g

To Find:

significant figures

Solution: Significant figures are the digits of value which carry meaning towards the resolution of the measurement. They are also called significant figures in chemistry. All the experimental measurements have some kind of uncertainty associated with them.

When we convert 0.4g acetylsalicylic acid to mg we get value 400mg

when we convert 400mg to gram we get value of 0.4 gram

Since 0 before a decimal is not significant so there is only one significant figure that is 4

Learn more about Significant figure here:

brainly.com/question/24491627

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5 0
2 years ago
The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21 x 10-8 cm. What is this distance in inche
Sergio [31]

Answer:

d=4.75\times 10^{-9}\ \text{inches}

Explanation:

Given that,

The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21\times 10^{-8}\ cm.

We need to convert this distance in inches.

We know that,

1 cm = 0.393 inches

We can solve it as follows :

1.21\times 10^{-8}\ cm=0.393\times 1.21\times 10^{-8}\\\\=4.75\times 10^{-9}\ \text{inches}

So, the distance between the centers of the two oxygen atoms is 4.75\times 10^{-9}\ \text{inches}.

5 0
2 years ago
What are two ways in which you can increase the potential energy of a marble on ramp
zlopas [31]

Answer:

You can make the ramp really steep and hold the marble at the top of it

Explanation:

6 0
2 years ago
How is temperature related to the physical change of a substance ?
tekilochka [14]
Determining on the temperature, ice could melt, water could freeze or evaporate. Just an example.
4 0
3 years ago
Read 2 more answers
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