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Valentin [98]
3 years ago
14

What property of most stars can be determined by their color?

Biology
1 answer:
harkovskaia [24]3 years ago
8 0
The correct answer is the letter D
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As evidenced in the graph, the national average CO concentrations have decreased substantially over the years. All BUT ONE tacti
Gekata [30.6K]

Answer:

Explanation:

Carbon monoxide (CO) is a colourless, non-irritant, odourless and tasteless toxic gas. It is produced by the incomplete combustion of carbonaceous fuels such as wood, petrol, coal, natural gas and kerosene. Its molecular weight is 28.01 g/mol, melting point −205.1 °C, boiling point (at 760 mmHg) −191.5 °C (−312.7 °F), density 1.250 kg/m3 at 0 °C and 1 atm and 1.145 kg/m3 at 25 °C and 1 atm, and relative density (air = 1) 0.967 (1,2). Its solubility in water at 1 atm is 3.54 ml/100 ml at 0 °C, 2.14 ml/100 ml at 25 °C and 1.83 ml/100 ml at 37 °C.

The molecular weight of carbon monoxide is similar to that of air (28.01 vs approximately 29). It mixes freely with air in any proportion and moves with air via bulk transport. It is combustible, may serve as a fuel source and can form explosive mixtures with air. It reacts vigorously with oxygen, acetylene, chlorine, fluorine and nitrous oxide. Carbon monoxide is not detectable by humans either by sight, taste or smell. It is only slightly soluble in water, blood serum and plasma; in the human body, it reacts with haemoglobin to form carboxyhemoglobin (COHb).

The relationship of carbon monoxide exposure and the COHb concentration in blood can be modelled using the differential Coburn-Forster-Kane equation (3), which provides a good approximation to the COHb level at a steady level of inhaled exogenous carbon monoxide.

Conversion factors

At 760 mmHg and 20 °C, 1ppm = 1.165 mg/m3 and 1 mg/m3 = 0.858 ppm; at 25 °C, 1 ppm = 1.145 mg/m3 and 1 mg/m3 = 0.873 ppm.

8 0
3 years ago
Read 2 more answers
calculate the quantity of electrical energy used by an electrical bulb rated 60 Walt's used for 2hours​
ivanzaharov [21]

Answer:

0.12KWH

Explanation:

Time: 2hrs

Power: 60watt

60/1000

Formula: Energy=potential/time

0.06×2= 0.12KWH

6 0
2 years ago
What has the base Thymine?
goldfiish [28.3K]
Video: DNA: Adenine, Guanine, Cytosine, Thymine & Complementary Base Pairing. Learn the language of nucleotides as we look at the nitrogenous bases adenine, guanine, cytosine and thymine.

5 0
3 years ago
Which bone is most commonly used to determine the height of the deceased?
Over [174]
The bone that's most commonly used to determine the height of the deceased is the femur (although the humerus can also be used). <span>The femur is measured in cm and the calculations may very according to the gender of the deceased and can be accurate within 5 cm.
The femur is a long bone that is hard and, therefore, can keep its integrity longer. As well as it is a bone that generally is proportional to the body.</span>
4 0
3 years ago
In which of the following situations would exocytosis be the proper mechanism of membrane transport?
cluponka [151]

Answer:

Secretion of the neurotransmitter serotonin, which is a water-soluble amine molecule

Explanation:

Exocytosis is defined as the process where cell transports secretary products which are packaged in transport vesicles such as antibodies, peptide hormones, secretory proteins, and enzymes with the help of cytoplasm to the plasma membrane.

Some example of exocytosis are:

1) Neurotransmitters secrets from nerve cells.

2) Antigens which helps to stimulate the immune response.

3) Proteins of the plasma membrane.

8 0
2 years ago
Read 2 more answers
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