What go a heater curve show?

A heater curve graphically represents the phase transitions the a substance undergoes as warm is included to it. The plateaus ~ above the curve note the phase changes. The temperature remains constant during these phase transitions.

You are watching: Which of the following is true for a heating curve?


Is a heater curve exothermic or endothermic?

On any kind of heating curve, energy is included and because of this it is always endothermic. True or False: On any cooling curve, power is released and therefore that is constantly exothermic.

What is the difference in between a heater curve and also a cooling curve?

Heating curves present how the temperature changes as a problem is heated up. Cooling curves space the opposite. They display how the temperature changes as a substance is cooled down. Just like heating curves, cooling curves have actually horizontal flat parts where the state changes from gas to liquid, or from liquid to solid.

What is the difference between heating curve and also phase diagram?

While a heating curve offers information top top the phase changes at a single pressure, the step diagram depicts the phase transforms at all temperatures and also pressures. One of these phase transforms is vaporization, i m sorry is an endothermic procedure that transforms a liquid to a gas.


Which phase of water will have actually the shortest temperature adjust upon heating as soon as the exact same amount of heat is applied to each?

liquid phase

How execute you calculation heat energy needed?

To calculation the power required come raise the temperature of any type of given substance, here’s what friend require:

The massive of the material, m.The temperature adjust that occurs, ΔT.The certain heat capacity of the material, c (which you have the right to look up). Right here is a resource of worths of c for different substances:Q=m×c×ΔT.

How numerous BTUs perform I need to boil water?

You have actually all heard that the BTU that heat energy (British thermal Unit), it takes one BTU to raise one pound of water one degree Fahrenheit. So if the water in the pan ~ above the cooktop is put in in ~ 32°F, it will certainly then need 180 BTU’s to carry the water come boiling temperature, or 212°F.


How numerous BTUs go it take to heat a 1000 square foot house?

Calculating the number of BTUs necessary to warmth an area because that example, a 300 square foot room generally requires 7,000 BTUs to keep a comfortable temperature, if a 1,000 square foot room calls for 18,000 BTUs.

How numerous BTUs do I need to warm 4000 square feet?

Chart the Recommended heater BTU every Square Foot

Room/Area Size:Examples:Ave. Encourage BTU:
100-200 sq ftSmall den or office4,000-8,000 BTU
200-300 sq ftDen, office, little bedroom7,BTU
300-400 sq ftEfficiency apartment12,000-18,000 BTU
400-500 sq ftStudio/1-bedroom apartment, small house000 BTU

How lengthy is 1000 sqft?

The square clip of a square or rectangular space can be established by multiply the width of the room by the length of the space. For example, a room that is 50 feet long and also 20 feet wide could accounting 1,000 square feet.

What size furnace do you need for a 1200 sq ft house?

A 1,200-square-foot home will require between 35,000 and also 75,000 BTUs.

How numerous square feet go a 60000 BTU furnace heat?

A conventional that is supplied by heating and cooling devices companies is to provide at the very least 25 to 30 Btu of heat per square feet in the house for a moderate to warmth climate. A mid-sized house of 2,000 square feet would certainly need roughly 50,000 to 60,000 Btu to warm it properly.

How many square feet will a 75000 BTU heater heat?

A 75,000 BTU heater deserve to heat a room of between 1,900 and 3,700 square feet in a cold climate if there is tiny to no insulation. In much more temperate climates the heater fares better, heating an uninsulated room of any kind of size from 2,400 to 4,600 square feet.

How much does a 60000 BTU heating system cost?

Natural Gas heating system Prices by BTU

Furnace size (BTU)Typical Furnace expense with Installation*
60,000$2,500 – $4,200
75,000$2,700 – $4,600
80,000$3,000 – $4,900
100,000$3,400 – $5,400

What space the worst furnaces?

Furnace brands to Avoid due to Quality Ratings and also Owner Reviews

Arcoaire (2.2 mean rating)Buderus (1.7 average Rating)Burnham furnaces (1.8 average Rating)Ducane (2.3 median rating)Evcon (2.2 mean rating)Keepright (2.4 median rating)Tempstar (2.5 average rating)Weatherking (2.4 typical rating)

Is a 96 furnace worth the extra money?

But coming ago to that, a 96% AFUE gas furnace is one of the most effective furnaces top top the market. If your utility is supplying an performance rebate top top gas technology, a 96% AFUE gas heating system will virtually certainly qualify. For this reason always, constantly check v your utility agency before you buy.

What is the many reliable heating system brand?

Best heating system Brands

Daikin Furnaces.Goodman Gas Furnaces.Lennox furnace Units.Rheem Furnaces.Ruud furnace Units.Trane Gas Furnaces.York heating system Units.HEIL Gas Furnaces.

Should ns buy 80 or 95% efficiency furnace?

A standard performance furnace provides 80% annual fuel utilization performance (AFUE). In this form of furnace, 20% the the energy developed by organic gas is expelled together exhaust. High effectiveness furnaces sell 90% or an ext AFUE. For this reason a 95% heating system is much more efficient than an 80% furnace.

Is Daikin much better than Lennox?

Looking at the specs the Lennox appears better: a little bit quieter and higher quality construction. Yet the Daikin system has actually a better warranty and is around x$ cheaper.

See more: 25% Of 250,000 - What Is 25 Percent Of 250000

What is the best type of furnace to buy?

Best Furnaces

Rheem Prestige and also Ruud Ultra collection are the best. The series has two modulating furnaces (modulating gas valves) and also three 2-stage furnaces. Ruud Achiever Plus and Rheem standard Plus are big series of heaters with a range of power options. These are the most renowned Rheem and also Ruud models.