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Alenkasestr [34]
4 years ago
13

Mendeleev was the first to arrange elements in a (n) _____ based on their properties

Chemistry
1 answer:
Elenna [48]4 years ago
3 0
Mendeleev was the first to arrange elements in a table based on their properties.

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Tina rides her bike for 4 miles.it takes her 2 hours.what is her speed in miles per hour
Ksju [112]

Answer

2mph

Explanation:

divide the miles by the hours it takes to get

3 0
3 years ago
Classify methanol (ch3oh) as a strong electrolyte, a weak electrolyte, or a nonelectrolyte.
MrRa [10]
Methanol(CH3OH) is a nonelectrolyte as it is not readily ionized when melted and dissolved, and a poor conductor of electricity when it is in solution.
Nanelectrolyte Contains covalent bonds and typically nonpolar molecules. Methanol doesn't dissolve in water, as the H of the alcohol functional group is not acidic enough so we can't easily separate it from the molecule.

8 0
4 years ago
Read 2 more answers
What are the functions of respiratory system​
VMariaS [17]

Answer:

Your lungs are part of the respiratory system.

Explanation:

A group of organs and tissues that work together to help you breathe.The respiratory system's main job is to move fresh air into your body while removing waste gases.

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6 0
3 years ago
A neutralization reaction was carried out in a calorimeter. The change in temperature (∆T) of the solution was 10.9 °C and the m
BabaBlast [244]

Answer:

The correct answer is 4,556.2 J

Explanation:

The amount of heat is calculated with the following equation:

Heat= m x Cs x ΔT

Given:

m= 100.0 g (mass)

Cs= 4.18 J/g.ºC (specific heat)

ΔT= 10.9ºC (change in temperature)

We introduce the data in the equation and calculate the heat:

Heat = 100.0 g x 4.18 J/ºC.g x 10.9ºC = 4,556.2 J

Therefore, the amount of heat absorbed by the water (gained by the solution) is 4,556.2 J

5 0
3 years ago
The percent by mass of water in the hydrate na2so4 * 10h20 is closest to
Arturiano [62]
Total mass of the crystal:
23 x 2 + 32 + 16 x 4 + 10 x 18
= 322

Mass of water:
10 x 18
= 180

Percentage of water = 180 / 322 x 100 = 55.9%
4 0
4 years ago
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