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Pachacha
11 days ago
10

The atomic weight of iodine is less than the atomic weight of tellurium. However, Mendeleev listed iodine after tellurium in his

original periodic table because he suspected the atomic weights for these elements were inaccurate. What was Mendeleev's reason for this suspicion?
Chemistry
1 answer:
eduard [2.5K]11 days ago
5 0

Answer:

The basis for the doubt stemmed from the way iodine chemically reacted and its other properties, suggesting that it should be grouped with chlorine and bromine, while the much denser tellurium ought to be classified in the preceding group

This doubt was confirmed when subsequent researchers discovered that tellurium's atomic number is 52 and iodine's is 53

Explanation:

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An infant acetaminophen suspension contains 80 mg/0.80 mL suspension. The recommended dose is 15 mg/kg body weight.
KiRa [2770]

Response:

0.8853 mL

Clarification:

Initially, we convert 13 lb to kg, remembering that 1 lb = 0.454 kg:

  • 13 lb * \frac{0.454kg}{1lb} = 5.902 kg

Next, we determine the required mg of acetaminophen to administer, applying the recommended dosage and infant's weight:

  • 15 mg/kg * 5.902 kg = 88.53 mg

Finally, we compute the necessary mL of suspension, utilizing its concentration:

  • 88.53 mg ÷ (80 mg/0.80 mL) = 0.8853 mL
8 0
1 month ago
Every single-celled organism is able to survive because it carries out *
castortr0y [2808]

Every unicellular organism prospers by executing metabolic activities.

Metabolic activities encompass the set of chemical reactions essential for sustaining life.

Explanation:

Different metabolic pathways maintain an organism's viability. Various metabolic activities occur in all living organisms.

These include processes like cellular respiration, reproduction, excretion, and digestion. Each living cell engages in these activities to survive.

Organisms acquire the energy necessary for these activities through food consumption.

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6 0
1 month ago
An atom has an average atomic mass of about 24.3 amu. What is the chemical
VMariaS [2753]
To start, consult the periodic table to pinpoint the element with an average atomic mass of 24.3. The amu is simply the number listed under the element, leading us to conclude that Mg is the answer.
3 0
17 days ago
Read 2 more answers
Why would it be better to be an r-selected species if the water resources in an area were to become more limited over a short pe
lions [2696]
An r-selected species has a significantly faster reproductive rate compared to K-selected species.

The focus of r-selected species is on quick maturation and reproduction. They are likely to breed during short periods when water supply is available, thus enhancing their survival chances.

Conversely, K-selected species prioritize nurturing their young and tend to reproduce later. Due to the longer maturation time before breeding, by the time K-selected species are ready, the water supply may be depleted, leading to lower survival odds.

Hope this clarifies!
If you have more questions, don’t hesitate to ask! Have a fantastic day!:)

~Collinjun0827, Junior Moderator
6 0
18 days ago
Read 2 more answers
How many micrograms of iron were in the 8.0 mL sample of Greg's blood?
castortr0y [2808]
The result is: 3.36 micrograms of iron in<span> Greg's blood sample.
</span>m(Fe) = 42 mcg(micrograms).
V(Fe) = 1 dL = 1 dL · 100 mL/1dL.
V(Fe) = 100 mL.
Using proportions: m(Fe): 8 mL = 42 mcg: 100 mL.
Thus, 100 mL · m(Fe) = 8 mL · 42 mcg.
m(Fe) = 336 mL·mcg ÷ 100 mL.
m(Fe) = 3.36 mcg.
4 0
28 days ago
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