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Why is heat sometimes positive or negative?
Because heat can either be hot which is positive, or cold which is negative. Hot and cold are relative terms which means it is a comparison to another temperature.
When what flows into a system it's value is positive when heat flows out of the system it's value is negative?
heat. apex.
When heat flows into a system its value is positive when heat flows blank of a system its value is negative?
When heat flows into a system, its value is positive, indicating an increase in the system's internal energy. Conversely, when heat flows out of a system, its value is negative, reflecting a decrease in the system's internal energy. This convention is used in thermodynamics to describe energy transfers.
Is endothermic positive or negative why?
Endothermic processes are characterized by a positive change in enthalpy, meaning they absorb heat from their surroundings. This absorption of energy results in a decrease in the temperature of the surroundings, which is why the enthalpy change (ΔH) is considered positive. In contrast, exothermic reactions release heat, resulting in a negative ΔH.
Positive and negative used in temperature?
In temperature measurement, "positive" and "negative" typically refer to the sign of the value on the Celsius or Fahrenheit scales. Positive temperatures indicate warmth above the freezing point of water (0°C or 32°F), while negative temperatures indicate cold below that point. In the context of thermodynamics, positive values can signify heat flow into a system, whereas negative values might indicate heat flow out of a system. This distinction is crucial in various scientific and engineering applications.
What is downward heat flow?
negative heat
When heat flows into a system its value is When heat flows out of a system its value is negative?
Heat is energy and cannot be negative, If you are talking about heat flow then if you define outflow to be negative then inflow is positive.
Is it possible for the specific heat of a substance to have a negative value?
No, it is not possible for the specific heat of a substance to have a negative value.
Can the amount of heat needed to change temperature be negative?
Mathematically, yes. Adding "negative heat" just means removing heat. Surely there's been a time in the past when you dropped a lump or two of negative heat into your drink. And sure enough ... once all that negative heat got into it, its temperature went down !
When heat flows into the system the sign of heat is negative?
No, when heat flows into a system, it is considered positive. Positive heat indicates heat is being added to the system, increasing its internal energy. Negative sign would indicate heat is being lost or leaving the system.
A sample of gas in a syringe releases heat go its surroundings while the plunger us pulled out what are the correct signs of heat and work in this change?
In this scenario, the gas is doing work on its surroundings, so the work is negative. Since heat is being released from the gas to its surroundings, the heat is also negative. The sign convention typically defines work done by the system as negative and heat released from the system as negative.
When heat flows into a system its value is positive. When heat flows of a system its value is negative.?
when heat flows Out of a system
When flows into a system its value is positive. When heat flows out of a system its value is negative.?
heat
What reaction are characteristic of negative heat flow?
Exothermic
Can heat be negative?
Sure, if one object loses heat, another will gain it.However, it might then be called heat gain.
Why is heat sometimes positive or negative?
Because heat can either be hot which is positive, or cold which is negative. Hot and cold are relative terms which means it is a comparison to another temperature.
What are some of the possible negative effects of drought and extreme heat?
some of the possible negative effects of drought and extreme heat is that it will lead do poor production in terms of agriculture.
