Answer:
The answer is Conduction
Explanation:
Conduction is the process of heat being transferred between objects through direct contact, and it's the most common type of heat transfer.
Answer:
1 and 2
Explanation:
The postulates of Dalton's atomic theory are;
- Matter is made up of indivisible particles known as atoms.
- Atoms of same elements have same properties while atoms of different elements have different properties.
- Atoms of different elements combine in fixed ratios to form compounds.
- Atoms are neither created nor destroyed.
- The formation of new products (compounds) results from the rearrangement of existing atoms (reactants).
By comparing the postulates above and those in the questions, we find that only the following postulates are part of the daltons atomic theory;
1. Atoms combine in fixed ratios of whole numbers.
2. Atoms of each element have different properties.
The chemical formula for ammonium carbonate is (NH₄)₂CO₃ .
It shows that one mole of ammonium carboonate contains two mole of ammonium ion that is NH₄⁺ .
Number of moles of ammonium carbonate , n=
Given mass of the ammonium carbonate=0.557 g
Molar mass of the ammonium carbonate= 96.086 g/mol
Number of moles of ammonium carbonate,
=0.0057 mol (NH₄)₂CO₃
0.0057 mol (NH₄)₂CO₃=0.0057×2 of NH₄⁺
=0.0114 of NH₄⁺
Answer:The center will be quite smaller in magnesium than in gold thus the alpha particle will scatter to a lesser degree and the experiment may not yield a meaningful result.
Explanation:
Gold has seventy nine protons and magnesium has only twelve protons. Gold atoms are quite much more massive than magnesium atoms. This implies that if magnesium atoms were used in Rutherford's experiment, the number of protons will be too few to give a reasonable result since the atom is quite small. A larger atom, having a larger centre is required in order to have meaningful scattering of alpha particles.
Answer:
When you keep raisin in water and the raisin gets puffed.Movement of salt-water in animal cell across our cell membrane.Plants take water and mineral from roots with the help of Osmosis.If you are there in a bath tub or in water for long your finger gets pruned.
Explanation:
I hope it helps
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