helium = 4 molar mass
4.002602 g/mol
The mass of a calcium atom is around 40 atomic mass units (u), while the mass of a helium atom is around 4 atomic mass units (u). Therefore, the mass of a calcium atom is 10 times greater than the mass of a helium atom.
To find the number of moles of helium in the balloon, you need to divide the mass of helium by its molar mass. The molar mass of helium is approximately 4 g/mol. Therefore, 0.46 g of helium is equal to 0.46 g / 4 g/mol = 0.115 mol of helium in the balloon.
Most helium has a mass number of 4. The rare 3He isotope has a mass number of 3. The mass number is the integer total of protons and neutrons for a given isotope. For example radioactive carbon-14 has a mass number of 14, while carbon-12 (the most common stable form) has a mass number of 12.
One common way to test for helium is to use a helium leak detector, which can detect very small amounts of helium gas. Helium can also be identified using a mass spectrometer, since it has a unique mass-to-charge ratio. Additionally, helium can be detected by its characteristic orange glow when placed in an electric field.
Yes, helium does have mass. Helium is a chemical element and all elements have mass.
It's just 4.002602 amu
Atomic mass = weight in gram / moles = 10 / 2.5 = 4 amu
Helium is a non metal element. Atomic mass of it is 4.00.
Helium with an atomic mass of 4.00260
Helium is a non metal element. Atomic mass of it is 2.
Helium has more mass than hydrogen. Helium is composed of two protons and two neutrons, while hydrogen is a single proton.
Approximately 4.01
Nitrogen is the heavier gas (mass of 28) compared to helium (mass of 4).
10g of helium has fewer atoms. This is because the atomic mass of helium is much higher than that of hydrogen, so the same mass of helium contains fewer atoms than the same mass of hydrogen.
The average atomic mass of helium is approximately 4.0026 atomic mass units (amu). This value is a weighted average of the isotopes of helium, primarily consisting of helium-4 with a small contribution from helium-3.
Helium. A low mass star does not have enough mass to generate the heat needed to fuse helium.