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HF [note correct capitalization] is not an element but a compound, since it contains two kinds of atoms. It is a gas at standard temperature and pressure.

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Explain the different between Hf and HF?

Hf refers to the chemical element hafnium, a transition metal with atomic number 72. HF refers to hydrofluoric acid, a colorless and highly corrosive acid. Hafnium is a solid metal used in nuclear reactors and electronics, while HF is a liquid acid used in various industrial processes.


What physical state is HF at room temp?

HF is a very corrosive gas at room temperature. It can even etch glass!


Where liquid Hf used?

where liquid Hf is used


Why is HF a liquid when H2 is a gas?

The principal reason is the hydrogen bonding between HF molecules. The second reason is that London dispersion forces will be higher in HF because it has more electrons than H2


What is the name of the element hf?

Hafnium


Is HF an element or a compound?

Capitalization matters in chemistry. Hf (uppercase H, lowercase f) is the element known as hafnium. HF (both letters uppercase) is the compound known as hydrogen fluoride.


What is the total number of joules released when 5.00 gram sample of water changes from liquid to solid at 0 Celsius?

a change from liquid to solid or solid to liquid will require the use of the formula of Heat of Fusion , q=mHf where m is the mass and Hf = 334J/g, this is standard so you wont have to look for how it came about.In this case the m=5.00g so: q = m Hf q=(5.00g)(334 J/g) , you notice the grams will cancel out. q = 1670 J.


Is hafnium and element or compound?

Hafnium (Hf) is a natural chemical element.


Is Hf a hydrofluoric acid?

No. Hf is hafnium. HF is hydrofluoric acid. Capitalization matters when writing chemical formulas.


How is the H fusion used to calculate the energy released when a mass of liquid freezes?

The heat of fusion is the amount of energy needed to change a substance from a liquid to a solid. To calculate the energy released when a mass of liquid freezes, you would use the equation Q = m * Hf, where Q is the energy released, m is the mass of the substance, and Hf is the heat of fusion.


What is most likely to be a solid at room temperature na2s hf nh3 n2 h2o?

NH3 (ammonia) is most likely to be a gas at room temperature, while N2 (nitrogen) and H2O (water) are most likely to be liquids. Na2S (sodium sulfide) and HF (hydrogen fluoride) are solid at room temperature.


What element is Xe5d2?

Well, this should be Xe6s24f145d2 which is element number 72 hafnium (Hf).