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solong [7]
2 years ago
6

About how many centimeters will make an inch? A)5 B)2+ C) 200 D)10

Chemistry
2 answers:
Rasek [7]2 years ago
6 0

Answer: B) 2+

Explanation:

   There are exactly 2.54 centimeters in an inch, the closest option is:

B) 2+

tangare [24]2 years ago
3 0

Answer:

2.54 centimetres

Explanation:

Ur options are wrong

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Hat is the definition for a scientific theory? A. an informed explanation that can be tested but is not widely accepted B. an ex
frosja888 [35]

Answer:

D. a scientific explanation that is agreed on by all scientists and is no longer adjusted as new evidence is found

Explanation:

Scientific theory is an explanation that has been repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results

3 0
3 years ago
Read 2 more answers
(a) The absorbance of mixture at 400 nm was 0.40.
laiz [17]

Answer:

0.1 g/dl

Explanation:

The standard curve is a graph that relates the absorbance at 400 nm with the concentration of haemoglobin in mg/dl. To obtain the concentration from the absorbance value, we enter in the x-axis (absorbance at 400 nm) with the value 0.40 (the line between 0.2 and 0.6), we extrapolate the line to the curve and read the correspondent value on y-axis (concentration in mg/dl): 100 mg/dl.

So, we convert the concentration from mg/dl to g/dl by dividing into 1000:

100 mg/dl x 1 g/1000 mg = 0.1 g/dl

Therefore, the concentration of haemoglobin of the patient is 0.1 g/dl.

6 0
3 years ago
Which quantity is used to generate the error bars on a graph?
RoseWind [281]
<span>range I believe, you take the difference between the heights of your theoretical and actual outcomes</span>
5 0
3 years ago
The air in a living room has a mass of 60 Kg and a specific heat of 1,020 J/kg°C. What is the change in thermal energy of the ai
arlik [135]

Answer:

Q = 306 kJ

Explanation:

Given that,

Mass, m = 60 kg

Specific heat, c = 1020 J/kg°C

The temperature changes from 20°C to 25°C.

Let Q be the change in thermal energy. The formula for the heat released is given by :

Q=mc\Delta T

Put all the values,

Q=60\times 1020\times (25-20)\\\\Q=306000\ J\\\\or\\\\Q=306\ kJ

So, 306 kJ is the change in thermal energy.

4 0
3 years ago
A piece of string is found to be 35.9 meters long. How long is the string in inches?
Nady [450]

Answer: 1413.39 inches

Explanation:

<u>Formula for converting meters to inches</u>

Meters x 39.37 (roughly) = Value in inches

<u>Applying formula</u>

35.9 meters x 39.37 = 1413.39 inches (roughly)

3 0
2 years ago
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