Answer:
The water is solvent and the salt is solute
A chemical reaction of exothermic kind releases energy in the form of heat and light.
We are given that reactant releases 27.4kJ/g for every gram of reactant consumed.
We are required to find number of grams of reactant that has been consumed
It is also given that 880J of energy is released
Hence, grams of reactants consumed is 880/27.4gm
Disclaimer:
It has been asked by the student to leave the question as mathematical expression.
For further reference:
brainly.com/question/15000187?referrer=searchResults
#SPJ9
<span>First, the child's weight must be converted from pounds to kilograms.
1 lb is equal to 0.453592 kg, so a 13 lb child weighs:
13 lb * 0.453592 kg/lb = 5.896696 kg
Next, use the child's converted weight to determine the mg dosage. The recommended dose is 15 mg per kg, so the recommended dose is:
15 mg/kg * 5.896696 kg = 88.45044 mg
Finally, determine how many mL are needed to provide the calculated mg dosage. One unit of the suspension is 80 mg/0.80 mL. In order to provide 88.45044 mg, you will need
88.45044 mg / 80 mg = 1.1056305 units of the suspension.
Multiplying this by the 0.80 mL portion of the unit of the suspension, you get the final mL dosage:
0.80 mL * 1.1056305 = 0.8845044 mL
A 13 lb child should receive 0.8845044 mL of the 80mg/.8mL suspension.</span>
Answer:
B. When it is obtained by rounding, as in 3.0
Explanation:
Answer:
Number of moles of nitrogen gas = 9.84 mol
Explanation:
Given data:
Number of moles of nitrogen gas = ?
Number of moles of dinitrogen monoxide = 9.84 mol
Solution:
Chemical equation:
2N₂O → 2N₂ + O₂
Now we will compare the moles of N₂O and N₂
N₂O : N₂
2 : 2
9.84 : 9.84
