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2 years ago

Most radiation is released as particles. Identify the type radiation that is not a particle.

Chemistry

1 answer:

Blizzard [7]2 years ago

6 0

Gamma rays

Explanation:

Gamma rays is a form of electromagnetic radiation. It has zero mass and no charge.

Most radiations are particles but gamma rays are not particles they are mere rays.

They have an energy range between 10KeV and 3Mev
The range of gamma rays is not definite but it is very long.
The intensity of gamma rays for any medium decreases exponentially from the source.
Gamma rays are ionizing radiations

learn more:

Irradiation brainly.com/question/10726711

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6 Select the correct answer. A substance is followed by the symbol (l) in a chemical equation. What does the symbol represent?

allsm [11]

Answer:

B. The substance is in the liquid state.

Explanation:

The symbol (l) in a chemical equation represents that the substance is in liquid state which is one of the physical states of a chemical substance.

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3 years ago

HELP DUE IN 5MIN WILL MARK BRAILIEST

Stells [14]

Explanation:

The problem deals with a phase transition from solid to liquid. To the left we have ice and to the right we have liquid water.

For such change to take place, the process of melting must occur. During melting, a solid changes state from solid to liquid by taking energy from the environment.

In solid state, the molecules of the water are in a fixed state about their fixed lattice.
As the solid ice gains energy from the environment, it begins to melt.
Energy increase causes the molecules of the water to start flowing to form a liquid.

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3 years ago

The thin layer that separates a cells contents from the outside environment is the A.cell membrane b.nucleus c.cytoplasm D.endop

Vikentia [17]

The answer is A) Cell Membrane

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3 years ago

Using the mmoles of (35)-2,2,-dibromo-3,4-dimethylpentane calculated earlier and the molecular weight of the product (962 g/mol)

Sedbober [7]

Answer:

The yield of the product in gram is $\mathsf{{w_P}=0.26 \ gram}$

Explanation:

Given that:

the molecular mass weight of the product = 96.2 g/mol

the molecular mass of the reagent (3S)-2,2,-dibromo-3,4-dimethylpentane is 257.997 g

given that the millimoles of the reagent = 2,7 millimoles = $2.7 \times 10^{-3} \ moles$

We know that:

Number of moles = mass/molar mass

Then:

$2.7 \times 10^{-3} = \dfrac{ mass}{257.997}$

$mass = 2.7 \times 10^{-3} \times 257.997$

mass = 0.697

Theoretical yield = (number of moles of the product/ number of moles of reactant) × 100

i.e

Theoretical yield = $\dfrac{n_P}{n_R}\times 100\%$

where;

$n_P = \dfrac{w_P}{m_P}$ and $n_R = \dfrac{w_R}{m_R}$

Theoretical yield = $\dfrac{(\dfrac{w_P}{m_P})}{(\dfrac{w_R}{m_R})} \times 100\%$

Given that the theoretical yield = 100%

Then:

$100\% =\dfrac{(\dfrac{w_P}{m_P})}{(\dfrac{w_R}{m_R})} \times 100\%$

$\dfrac{w_P}{m_P}=\dfrac{w_R}{m_R}$

${w_P}=\dfrac{w_R \times m_P}{m_R}$

where,

$w_P$ = derived weight of the product

$m_P =$ the molecular mass of the derived product

$m_R =$ the molecular mass of the reagent

$w_R$ = weight in a gram of the reagent

${w_P}=\dfrac{w_R \times m_P}{m_R}$

${w_P}=\dfrac{0.697 \times 96.2}{257.997}$

$\mathsf{{w_P}=0.26 \ gram}$

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2 years ago

I’m having hard time to understand can someone answer it and explain it

tekilochka [14]

Number #2 is joule

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Number #3 is Endothermic

Why? I can't explain. I Just left class where they were just explaining that.

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2 years ago