The Curies discovered radium
Answer:
1. Because the rules will keep you safe it prevents you from getting hurt.
2.i) don't taste chemical
ii) Always wear protective gears
iii) be careful with tool
iv) wear protective gloves
Explanation:
help everyone get out quickly
1. According to Rutherford and soddy's law of Beta emission:
3. According to Rutherford and soddy's law of Alpha emission:
4. The process in which two or more light nuclei are combined to form a single nucleus with the release of tremendous amount of energy is called a nuclear fusion. The inner core of Sun is at very high temperature and is suitable for fusion. In fact the source of energy of Sun and other stars is nuclear fusion reactions.
Converting the number of reactants affects the number of products produced in a chemical reaction. In a chemical reaction, the most effective atoms present in the reactants can come to be in the products. Mass is conserved in a chemical response.
If the floor area to volume ratio of a reacting stable is progressed: more reactant particles are uncovered on the ground. the frequency of collisions amongst reactant debris will increase. consequently, the rate of reaction will grow.
Catalysts always accelerate a chemical change. they're materials that participate in a chemical response by increasing the price of response however are unchanged via the reaction itself. Growing the eye of 1 or more reactants will frequently boom the charge of the response. This takes place due to the fact a higher interest in a reactant will motivate greater collisions of that reactant in a selected time period.
Learn more about chemical change here:-brainly.com/question/1222323
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The number of moles in a substance indicates the amount of the substance that contains the same number of particles as 12 g of the Carbon-12 isotope [or equivalent to 6.02 × 10²³ (which is used as a standard in the world of moles).
Now,
if 6.02 × 10²³ atoms are found in 1 mole of Mg
then let 6.98 × 10²⁴ atoms are found in x
⇒ x = (6.98 × 10²⁴) ÷ (6.02 × 10²³)
= 11.595 mol
Also,
Mass = Mole × Molar Mass
∴ Mass of Mg = 11.595 mol × 24 g / mol
= 278.27 g
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The mass of a sample of 6.98 × 10</span>²⁴ atoms of magnesium (Mg) would contains 278.27 g