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3 years ago

Someone answer these both for me

Chemistry

1 answer:

Julli [10]3 years ago

4 0

Answer:

a b

Explanation:

I think so take it with a grain of salt

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Help help help help please

Sav [38]

Explanation:

what is the end of the question???

4 0

3 years ago

Mechanical twinning occurs in metals having which type(s) of crystal structure(s)?

kari74 [83]

Mechanical twinning occurs in metals having body center cubic and hexagonal closed packed structures. Twinning is said to occur when a portion of a crystal takes up an orientation that is related to the orientation of the untwinned lattice in a definite symmetrical manner.

5 0

3 years ago

Part A Transmutation is the process of transforming one element into another through nuclear reactions. What will be the nuclide

S_A_V [24]

Answer: The isotope produced after the transmutation process of Cf-249 and C-12 is $_{104}^{257}\textrm{Rf}$

Explanation:

Transmutation is defined as the process where one chemical isotope gets converted to another chemical isotope. The number of protons or neutrons in the isotope gets changed.

The chemical equation for the reaction of Californium-249 nucleus with Carbon-12 nucleus follows:

$_{98}^{249}\textrm{Cf}+_6^{12}\textrm{C}\rightarrow _{Z}^{A}\textrm{X}+4_0^1\textrm{n}$

In a nuclear reaction, the total mass and total atomic number remains the same.

To calculate A:

Total mass on reactant side = total mass on product side

249 + 12 = A + 4

A = 257

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

98 + 6 = Z + 0

Z = 104

Hence, the isotope produced after the transmutation process of Cf-249 and C-12 is $_{104}^{257}\textrm{Rf}$

5 0

3 years ago

In the reaction 2H2O (l) + 2Cl– (aq) → H2 (g) + Cl2 (g) + 2OH– (aq), how many electrons are transferred?

lora16 [44]

C. 2

2H_2O + 2e^(-) → H_2 + 2OH^(-)

2Cl^(-) → Cl_2 + 2e^(-)

2H_2O +Cl^(-) + 2e^(-) → H_2 + Cl_2 + 2OH^(-) + 2e^(-)

2H_2O +2Cl^(-) → H_2 + Cl_2 + 2OH^(-)

This is a redox reaction in which two chloride ions transfer two electrons to two molecules of water.

7 0

3 years ago

What is the mass in grams of 1.5*10^-3 mol of sodium

Nutka1998 [239]

The Formula to find the number of moles is:
Number of Moles = Mass/ Molar Mass

Which means that Mass = Number of Moles * Molar Mass

We know that Number of Moles of Sodium Na = $1.5*10^_{-3}$ moles
If you check the Periodic Table, Molar Mass of Sodium Na = 23g/mol

So, Mass = $1.5*10^_{-3} * 23$ = $3.45 * 10^{-2}$

So, the mass in grams of $1.5*10^_{-3}$ mol of Sodium is $3.45 * 10^{-2}$

Hope this Helps :)

4 0

4 years ago

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