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Vikki [24]
3 years ago
10

Which one of these is not a pathogen?

Chemistry
1 answer:
TiliK225 [7]3 years ago
5 0
B, plant

A pathogen is a bacterium, virus, or other microorganisms that can cause disease. A plant does cause a disease
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The picture shows two containers filled with a gas.
aniked [119]

Answer: The average kinetic energy of the gas particles is greater in container B because it has a higher temperature.

3 0
1 year ago
Calculate the mass of a 0.297-mL sample of a liquid with a density of 0.930 g/mL.
tekilochka [14]

Answer: 0.27621 g

Explanation:

0.297 ml *0.930 g/ml=0.27621 g

8 0
1 year ago
2) Calculate the mass(g) of the following substances:<br> b) 0.119 mole MgCl2
VARVARA [1.3K]

Answer:

MgCl2 = 24 + 2(35.5)

= 95

mass of substance = mol × molar mass

= 0.119 × 95

= 11.305 g

4 0
3 years ago
How many moles of nitroge are there in 50.0 g of nitrogen?
chubhunter [2.5K]

1.785714286 moles

The number of moles (n) for nitrogen is: [ n=50.0÷28.0 ] = 1.785714286 moles.

8 0
3 years ago
A pure white crystalline compound was found to melt at 112.5-113.0oC when taken on a melting point apparatus, and on further hea
Sergeeva-Olga [200]

According to the question, the determined melting point of the compound is 112.5-113.0oC. When the solidified compound was retried, the melting point was found to be 133.6-154.5oC. This greater range higher than  112°C is caused by reusing samples leads to errors.

A pure sample is known by its sharp melting point. A pure sample does not melt over a large range. We can see this in the predetermined melting points of the pure sample(112.5-113.0oC).

However, reusing a sample introduces errors because the pure sample may become contaminated leading to a larger and higher range of melting point (133.6-154.5oC) which is far above  112°C.

Learn more: brainly.com/question/5325004

8 0
2 years ago
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