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lara31 [8.8K]
3 years ago
12

Gamma rays are unlike alpha and beta particles because gamma rays:

Chemistry
2 answers:
photoshop1234 [79]3 years ago
5 0
I would say the last one because unlike beta and alpha rays they will have no effect on the mass or atomic number because they are just composed of high energy radiation
Bas_tet [7]3 years ago
5 0

Answer:

have no effect on atomic number or mass number of the atoms that emit them.

Explanation:

  • Unlike alpha and beta particles gamma rays are weightless packets of energy which have both mass and energy. Gamma rays are more like visible light but they have much higher energy. Based on this option D is true because gamma rays have no mass that is why they have no effect on atomic number of the atoms that emit them.
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What makes carbon monoxide
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Carbon monoxide is a colorless, odorless, tasteless gas produced by burning gasoline, wood, propane, charcoal or other fuel. Improperly ventilated appliances and engines, particularly in a tightly sealed or enclosed space, may allow carbon monoxide to accumulate to dangerous levels.
5 0
3 years ago
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How many electrons are in 0.990 oz of a pure gold coin?
sleet_krkn [62]

Atomic number of gold, Au = 79 means there are 79 electrons in per atom of gold.

Atomic mass of gold = 196.967 gm

0.990 oz of gold is given.

Now, converting oz to gm

1 oz = 28.3495 gm

So, 0.990 oz = 0.990\times 28.3495 gm = 28.066 gm

Now, for determining the number of moles, the formula for number of moles is:

number of moles = \frac{given mass}{Molar mass}

Substituting the values:

number of moles = \frac{28.066}{196.967} = 0.1425 mole

1 mole of Au = 6.022\times 10^{23} atoms of Au

So, for 0.1425 mole of Au = 6.022\times 10^{23}\times 0.1425 atoms of Au = 0.8581 \times 10^{23} atoms of Au

Since 1 atom of gold has 79 electrons so,

Number of electrons = 0.8581 \times 10^{23}\times 79 = 67.7899\times 10^{23} electrons

So, number of electrons in 0.990 oz of pure gold coin is 67.7899\times 10^{23}.

7 0
3 years ago
Which is the most chemically active of all the elements?
liberstina [14]
Answer
Fluorite
Explanation
Fluorine is a yellowish, poisonous, highly corrosive gas. It is the most chemically active nonmetallic element and is the most electronegative of all the elements. It is a member of Group 17 (the halogens ) of the periodic table .
7 0
3 years ago
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3. In which reaction is the volume of the products equal to the volume of the
taurus [48]

Answer:A

Explanation:

7 0
3 years ago
Methylhydrazine, CH6N2, is commonly used as a liquid rocket fuel. The heat of combustion of methylhydrazine is −1.30 × 103 kJ/mo
Step2247 [10]

Answer:

There is 5720 J of heat released.

Explanation:

Step 1: Data given

Molar mass of CH6N2 = 46.07 g/mol

The heat of combustion of methylhydrazine is −1.30 × 103 kJ/mol

Mass of methylhydrazine = 202.7 grams

Step 2: Calculate number of moles

Moles CH6N2 = mass of CH6N2 / Molar mass CH6N2

Moles CH6N2 = 202.7 grams / 46.07 g/mol

Moles CH6N2 = 4.4 moles

Step 3: Calculate heat released when 202.7 grams of CH6N2 is burned

q = 1300 J/mol * 4.4 moles

q = 5720 J

(Since there is heat released, ΔH = negative)

There is 5720 J released.

7 0
3 years ago
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