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zhuklara [117]
3 years ago
5

The following are units for mass except _____. A. kg B. Mg C. mL D. cg

Chemistry
1 answer:
yarga [219]3 years ago
5 0
Cg is not in units for mass
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Arrange the following bonds in order of increasing ionic character. assign number 1 as the highest and 6 as the lowest. a. carbo
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Answer: Potassium to fluorine, fluorine to nitrogen, bromine to hydrogen, carbon to hydrogen, lithium to chlorine, sodium to chlorine.
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Ionic bond is greater when the electronegativity difference existing between the two atoms are large causing the bonding to be more polar.
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Type the temperatures in Kelvin) in the left column
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Answer: the data appear to be ( linear )

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Salinity is a measure of which of the following in water?
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The answer is dissolved salts
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The naturally occurring radioactive decay series that begins with 23592U stops with formation of the stable 20782Pb nucleus. The
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Answer: There are 7 alpha-particle emissions and 4 beta-particle emissions involved in this series

Explanation:

Alpha Decay: In this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. The mass number is reduced by 4 units and atomic number is reduced by 2 units.

Beta Decay : It is a type of decay process, in which a proton gets converted to neutron and an electron. This is also known as -decay. In this the mass number remains same but the atomic number is increased by 1.

In radioactive decay the sum of atomic number or mass number of reactants must be equal to the sum of atomic number or mass number of products .

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Thus for mass number : 235 = 207+4X

4X= 28

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Thus for atomic number : 92 = 82+2X-Y

2X- Y = 10

2(7) - Y= 10

14-10 = Y

Y= 4

_{92}^{235}\textrm{U}\rightarrow _{82}^{207}\textrm{Pb}+7_2^4\alpha+4_{-1}^0e

Thus there are 7 alpha-particle emissions and 4 beta-particle emissions involved in this series

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In this assignment, you will write and balance a chemical equation. Then, you will use a table of enthalpy values to calculate t
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2 H2(g) + O2(g) → 2 H2O(ℓ) ΔH = −570 kJ

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