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3 years ago

Which type of radioactive emission has a positive charge and weak penetrating power?

Chemistry

1 answer:

vladimir2022 [97]3 years ago

3 0

1. The Alpha particle is a helium nucleus, is positively charged & would barely penetrate a piece of paper.<span />

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Someone pls help rn!!

krok68 [10]

Answer:

280

Explanation:

total pressure=partial pressure (He)+partial pressure (N2)+partial pressure (H2)

5 0

2 years ago

Read 2 more answers

You start with an equimolar mixture of the gases SO₂ and O₂ in a container. The SO₂ and O₂ react to completion to form SO₃. If t

Charra [1.4K]

Explanation:

The given reaction is as follows.

$SO_{2} + O_{2} \rightarrow SO_{3}$

Now, balancing the given equation by putting appropriate coefficients.

$2SO_{2} + O_{2} \rightarrow 2SO_{3}$

It is given that equimolar $SO_{2}$ and $O_{2}$ . Hence,

Therefore, during completion of the reaction,

$SO_{2} + O_{2} \rightarrow SO_{3} + \frac{1}{2}O_{2}$

Temperature (T) = $25^{o}C$ = (25 + 273) K = 298 K

Pressure (P) = 1.75 atm

R (gas constant) = 0.0820 L atm/mol K

As on completion of reaction there is $O_{2}$ and $SO_{3}$ remains in the mixture. Therefore, molar mass of the mixture is equal to the sum of molar mass of

Total molar mass = $O_{2} + SO_{3}$

= (32 + 80) g/mol

= 112 g/mol

Hence, according to the formula we will calculate the density as follows.

Density = $\frac{P \times \text{molar mass}}{R \times T}$

= $\frac{1.25 atm \times 112 g/mol}{0.0820 Latm/mol K \times 298 K}$

= 5.73 g/L

Thus, we can conclude that density of the product gas mixture is 5.73 g/L.

7 0

3 years ago

The dimerization of butadiene 2C4H61 g2h C8H121 g2 was studied at 500. K, and the following data were obtained: Time (s) [C4H6]

ivanzaharov [21]

Answer:

Rate law: $k[C_4H_6]^2$

Integrated Rate Law: $\frac{1}{[C_4H_6]}=\frac{1}{[C_4H_6]_0}+kt$

$k = 1.4 \times 10^{-2}$

Explanation:

We can see that the graph of time is linear compared to $\frac{1}{[C_4H_6]}$ and the reaction is second order hence we get the rate law from $k[A]^n$ .

The integrated rate law for second order is $\frac{1}{[A]}=\frac{1}{[A]_0} +kt$ where A is $C_4H_6$ .

The slope of the graph $\frac{1}{[C_4H_6]}$ w.r.t time is equal to k. The slope of the graph from the table is 0.014 which is equal to k.

8 0

3 years ago

Select the correct answer.

MatroZZZ [7]

Answer:

Which phrase best describes wave motion? Movement of energy through space or a medium.

Explanation:

Answer option A.

8 0

3 years ago

What is true about a pseudoscientific idea

DENIUS [597]

Something that claims to or appear to be scientific, but is not. For example astronomy is science but astrology is at times pseudoscientific.

6 0

2 years ago