Answer:
When it comes to ice cream, there are two big advantages to using liquid nitrogen over an electric machine or an old-timey hand-cranked job. First, it’s faster. Second, because it’s faster, there’s less likelihood that your cold confection will develop those pesky ice crystals that form when the ice cream freezes too slowly. To recap: better dessert, in your mouth sooner. What’s not to love?
Make mine the brainliest
Explanation:
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10.0g
22.1g
32.9g
5.6g
Answer:
22.1 g
Explanation:
The balanced reaction equation which serves as a guide in solving the problem is given as;
CaO(s) + 2NaCl(aq) ------> Na2O(s) + CaCl2(aq)
The question clearly specifies that sodium chloride is the reactant in excess. This means that calcium oxide should be used to calculate the theoretical yield of sodium oxide.
Number of moles of calcium oxide reacted = mass of calcium oxide / molar mass of calcium oxide
Molar mass of calcium oxide = 56.0774 g/mol
Mass of calcium oxide = 20.0g
Number of moles of calcium oxide = 20.0 g/ 56.0774 g/mol = 0.3566 moles
From the balanced reaction equation;
1 mole of calcium oxide produces 1 mole of sodium oxide
Therefore, 0.3566 moles of calcium oxide will produce 0.3566 moles of sodium oxide.
Mass of sodium oxide produced = number of moles × molar mass
Molar mass of sodium oxide= 61.9789 g/mol
Mass of sodium oxide = 0.3566 moles × 61.9789 g/mol
Mass of sodium oxide= 22.1 g
Answer:
22.1g
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
CaO + 2NaCl —> Na2O + CaCl2
Next, we shall determine the mass of CaO that reacted and the mass of Na2O produced from the balanced equation.
This is illustrated below:
Molar mass of CaO = 40 + 16 = 56g/mol
Mass of CaO from the balanced equation = 1 x 56 = 56g
Molar mass of Na2O = (23x2) + 16 = 62g/mol
Mass of Na2O from the balanced equation = 1 x 62 = 62g
From the balanced equation above,
56g of CaO reacted to produce 62g of Na2O.
Finally, we can determine the theoretical yield of Na2O as follow:
From the balanced equation above,
56g of CaO reacted to produce 62g of Na2O.
Therefore, 20g of CaO will react to produce = (20 x 62)/56 = 22.1g of Na2O.
Therefore, the theoretical yield of Na2O is 22.1g
Answer: it is easily magnetized
Explanation:
Answer:
Improving the habitats of herring thereby increasing their population.
Explanation:
First, two consumers (Steller sea lion and Pollock) are both competing for common prey (herring). Since the question only asked what could be done to increase the decreasing Steller sea lion population of Alaska, the focus would be made only on the Steller sea lion.
The Steller sea lion population would increase if:
1. The herring population should be increased by improving the food available for them to feed on, and improving their reproduction capacities to enable them to reproduce efficiently.
2. Since there are 2 predators. If the population of the prey is fixed, then Pollock should be more hunted by farmers or other biological means to eliminate competition.
The balanced chemical reaction is:
2Al2O3 = 4Al +3 O2
We are given the amount of the reactant. This will be the starting point of our calculations.
26.5 mol Al2O3 ( 3 mol O2 / 2 mol Al2O3 ) = 39.75 mol O2 needed
Thus, 0.014 mol of I2 is needed to form the given amount of NI3.
the balanced chemical equation for the decomposition of Al₂O₃ is as follows
2Al₂O₃ --> 4Al + 3O₂
stoichiometry of Al₂O₃ to O₂ is 2:3
when 2 mol of Al₂O₃ decomposes - 3 mol of O₂ are formed
therefore when 26.5 mol of Al₂O₃ decomposes - 3/2 x 26.5 mol = 39.75 mol
the number of moles of O₂ formed are 39.75 mol
Answer:
Explanation:If you can't get a reading on a fish fossil, there are other methods you can try to determine its approximate age. Here's a step-by-step process to estimate the fossil age:
1. Relative Dating: Start by using the principles of relative dating. This method involves comparing the age of the fossil to the ages of other nearby fossils or rock layers. By studying the position of the fossil in the rock layers and the types of fossils found around it, you can make an estimate of its relative age.
2. Index Fossils: Look for index fossils, which are species that existed for a relatively short period of time but were widespread. By identifying an index fossil within the rock layers that contain the fish fossil, you can narrow down the possible time range during which the fish lived.
3. Radiometric Dating: If relative dating and index fossils don't provide a precise age estimate, you can turn to radiometric dating. This method involves measuring the decay of radioactive isotopes in the rock or fossil to determine its age. For example, you could analyze the ratio of parent isotopes to daughter isotopes in the fossil. By knowing the half-life of the radioactive isotope and the current ratio, you can calculate the approximate age.
4. Carbon-14 Dating: If the fish fossil is relatively recent (less than 50,000 years old), carbon-14 dating can be used. This method relies on the decay of carbon-14, a radioactive isotope found in living organisms. By measuring the amount of carbon-14 remaining in the fossil, you can estimate its age.
5. Other Methods: If all else fails, there are other techniques that paleontologists may use to estimate fossil age, such as studying the fossil's morphology, comparing it to known fossil records, or analyzing the chemical composition of the surrounding rocks.
Remember that estimating the age of a fossil is not always a straightforward process, and different methods can provide different ranges of accuracy. It's important to consider multiple lines of evidence and consult with experts in the field to obtain the most accurate estimate possible.