Using the formula q = mcΔT, and substituting the values for mass, specific heat capacity of iron, and temperature change, it is calculated that it takes approximately 3.058 KJ to warm 125 g of iron from 23.5 °C to 78.0 °C.
To calculate the amount of heatneeded to warm 125 g of iron from 23.5 °C to 78.0 °C, we use the formula q = mcΔT, where 'm' is the mass in kilograms, 'c' is the specific heat capacity, and 'ΔT' is the temperature change. In this case, the mass 'm' is 0.125 kg (since 1 g = 10^-3 kg), the specific heat capacity 'c' of iron is 0.449 J/g°C (or 449 J/kg°C), and 'ΔT' is 78.0 °C - 23.5 °C = 54.5 °C.
Substituting these values into the formula, we get q = (0.125 kg) * (449 J/kg°C) * (54.5 °C), which gives a result of approximately 3.058 KJ.
Therefore, it would take approximately 3,058 KJ to warm 125 g of iron from 23.5 °C to 78.0 °C.
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To warm 125 g of iron from 23.5 °C to 78.0 °C, it requires approximately 3.93 kilojoules of energy.
To calculate the number of kilojoules required to warm 125 g of iron from 23.5 °C to 78.0 °C, we can use the formula:
q = m * c * ΔT
Where:
Using the given values:
Substituting the values into the formula:
q = 125 g * 0.450 J/g°C * (78.0 °C - 23.5 °C)
Simplifying the equation:
q = 125 * 0.450 * (78.0 - 23.5)
q ≈ 3933.75 J ≈ 3.93 kJ
Therefore, it requires approximately 3.93 kilojoules of energy to warm 125 grams of iron from 23.5 °C to 78.0 °C.
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b. carbon
c. sodium
d. iodine
The answer to your question is
d. idoine
The Upper Peninsula of Michigan was widely known for iron mining. This region saw significant iron ore extraction, primarily in the Marquette Range, dating back to the 1800s. The mining and extraction process relied on iron smelting and made use of iron's magnetic properties.
The element that was extensively mined in the Upper Peninsula of Michigan is iron. This area, primarily in the Marquette Range, was a significant producer of iron ore, a key ingredient in the manufacturing of steel. The mining of iron in Michigan's upper peninsula started in the 1800s and, during its peak periods of the late 19th and early 20th centuries, the industry was critical to Michigan's economy.
Historically, iron ore was obtained through iron smelting, a process that involved heating and melting iron ore to extract pure iron. The iron was then used in various industries, primarily for the manufacturing of steel.
In extracting iron, magnetic properties of individual atoms were often considered due to iron's magnetic nature. Since iron ore is magnetically responsive, this property helped in the location and extraction of the ore. Furthermore, the delivery of the iron ore from the mines was influenced by the location of the mine, the concentration of the iron in the ore, and the difficulties associated with reducing the iron to its free metal form.
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(1) N2 (3) Na
(2) NH4+ (4) NaHCO3
The species that significantly represents a chemical compound is known as NaHCO3. This is also known as Sodium bicarbonate or sodium hydrogen carbonate. Thus, the correct option for this question is D.
A chemical compound may be defined as a type of chemical substance that is mainly composed of many similar molecules that contain atoms of more than one chemical element. These atoms are typically held together by chemical bonds.
According to the context of this question, Na is sodium and N2 is dinitrogen or simply nitrogen gas. Both these chemical constituents are classified as the type of chemical element. While NH4+ is a polyatomic ion which is known as an ammonium ion.
So, NaHCO3 is classified into the category of a chemical compound. This is because it mainly consists of sodium, hydrogen, carbon, and oxygen.
Therefore, the species that significantly represents a chemical compound is known as NaHCO3. This is also known as Sodium bicarbonate or sodium hydrogen carbonate. Thus, the correct option for this question is D.
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Answer:
4.) NaHCO3
Explanation:
In a compound, two or more elements are chemically combined. NaHCO3 is a compound containing the elements sodium (Na), hydrogen (H), carbon (C), and oxygen (O). N2 and Na are elements. NH4+ is the polyatomic ion ammonium.Zoom
B. released from
C. kept stable in
Answer: can confirm that A: Released into. Is the correct answer