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3 years ago

Identify the nuclide produced when thorium-234 decays by beta emission:234 90Th→ 0−1e + ?

1 answer:

7 0

<h3>Answer: 234 90Th → 0 -1e + 234 91Pa Explanation: Given that : Thorium 234 decays by beta emission Beta emission = 0, - 1 e 234 90Th → 0 -1e + 234 91Pa Hence, when Thorium 234 90 undergoes a beta Decay ; mass number remains the same at 234 while atomic number increases by 1, becoming (90 + 1) = 91 to form a protactinium nuclide. </h3>

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What has more kinetic energy 10kg of bees flying at 10m/s or 10kg of birds flying at 10m/s? Why?

Sloan [31]

<h2>Answer:</h2>

Both of them will have same kinetic energy.

<h2>Explanation:</h2>

Kinetic energy is the energy of motion, every object in motion posses some kinetic energy.
Kinetic energy can be calculated by the given formula,

i.e, K.E = 1/2 mv² .

Where, K.E is kinetic energy,

m is mass of the object

v is the velocity of the object

On observing the formula we can state that K.E is directly proportional to mass(m) and velocity(v) of the object.
Obviously, birds have more mass than bees but in question it has given 10 Kg of bees and 10 Kg of birds which means mass is same and also both of them are travelling with same velocity i.e 10m/s and hence both of them will have same kinetic energy(as both of the variables i.e m and v are same).

Result: Both bees and birds have same kinetic energy.

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3 years ago

Density is the relation between the mass and volume of a body ? <br> True or false?

Nuetrik [128]

I think it is true..

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3 years ago

The following anions can be separated by precipitation as silver salts: Cl- , Br- , I- , CrO4 2-. If Ag is added to a solution c

dalvyx [7]

Answer:

AgI, AgBr, AgCl and Ag₂CrO₄

Explanation:

Ksp (product solubility constant) is defined as the equilibrium constant of the general reaction:

XₐYₙ(s) → aXⁿ⁺(aq) + nYᵃ⁻(aq)

<em>Where X is cation and Y is anion.</em>

Ksp = [aXⁿ⁺]ᵃ [nYᵃ⁻]ⁿ

The presence of XₐYₙ(s) produce ax moles of aXⁿ⁺ and nx moles of Yᵃ⁻. <em>Where X is the solubility of the compound.</em>

Replacing in Ksp:

Ksp = [ax]ᵃ [nx]ⁿ

Solving for x, Solubility (S) is defined as:

$S = \sqrt[n+a]{\frac{Ksp}{a^{a} n^n} }$

For AgCl, Ag₂CrO₄, AgBr and AgI solubilities are:

$S = \sqrt[2]{\frac{1.8x10^{-10}}{1} }$ = 1.34x10⁻⁵M

$S = \sqrt[3]{\frac{1.1x10^{-12}}{4} }$ = 6.50x10⁻⁵M

$S = \sqrt[2]{\frac{5.4x10^{-13}}{1} }$ = 7.35x10⁻⁷M

$S = \sqrt[2]{\frac{8.5^{-17}}{1} }$ = 9.22x10⁻⁹M

The lower solubility is the first compound in precipitate, thus, order of precipitation is:

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3 years ago

What is the advantage of having valves in the

fenix001 [56]

The valves stop the blood from flowing backwards

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3 years ago

N2+ 3 H2 -> 2 NH3 If 12.0 g of H2 reacts with excess N2. then what mass of NH3 will be produced?

Vinil7 [7]

Hey mate here is pratyush for your help from India
..

your answer is in the attachment ..

the answer is 68g of NH3 will be produced.

hope it helps you.

be brainly

7 0

3 years ago