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3 years ago

The minimum amount of energy that has to be added to start a reaction is the

1 answer:

7 0

The minimum amount of energy that has to be added to start a reaction is the activation energy, which starts the reaction. It activates it.

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Cuales son los símbolos para representar que una reacción se produce en presencia de;

ycow [4]

Answer:

Explanation:

3 0

3 years ago

Cart A has a mass of 14 kg and is being pulled with a force of 25 N. Cart B has a mass of

oksian1 [2.3K]

Answer:

the awnser is Cart A.

cart A has a mass of 14 kg but is pushed with 25newtons of force and 25 is 11 more than 14 and it just kind of makes sense.

and cart B has a mass of 12kg and is pulled with 19newtons and 19 is 7 more than 12.

Hope this helps!

7 0

3 years ago

Which isotope will spontaneously decay and emit particles with a charge of +2?

VikaD [51]

Answer: The correct option is 4.

Explanation: All the options will undergo some type of radioactive decay processes. There are 3 decay processes:

1) Alpha decay: It is a decay process in which alpha particle is released which has has a mass number of 4 and a charge of +2.

$_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}\textrm{Y}+_2^4\alpha$

2) Beta-minus decay: It is a decay in which a beta particle is released. The beta particle released has a mass number of 0 and a charge of (-1).

$_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta$

3) Beta-plus decay: It is a decay process in which a positron is released. The positron released has a mass number of 0 and has a charge of +1.

$_Z^A\textrm{X}\rightarrow _{Z-1}^A\textrm{Y}+_{+1}^0\beta$

For the given options:

Option 1: This nuclei will undergo beta-plus decay process to form $_{25}^{53}\textrm{Mn}$

$_{26}^{53}\textrm{Fe}\rightarrow _{25}^{53}\textrm{Mn}+_{+1}^0\beta$

Option 2: This nuclei will undergo beta-minus decay process to form $_{80}^{198}\textrm{Hg}$

$_{79}^{198}\textrm{Au}\rightarrow _{80}^{198}\textrm{Hg}+_{-1}^0\beta$

Option 3: This nuclei will undergo a beta minus decay process to form $_{56}^{137}\textrm{Ba}$

$_{55}^{137}\textrm{Cs}\rightarrow _{56}^{137}\textrm{Ba}+_{-1}^0\beta$

Option 4: This nuclei will undergo an alpha decay process to form $_{85}^{216}\textrm{At}$

$_{87}^{220}\textrm{Fr}\rightarrow _{85}^{216}\textrm{At}+_2^4\alpha$

Hence, the correct option is 4.

7 0

4 years ago

Read 2 more answers

What is the molarity of a solution made from 325.4 g of AlCl3 (MM 133.34 g/mol) to make 500.0 mL?

NISA [10]

Answer : The molarity of a solution is, 4.88 M

Explanation : Given,

Mass of $AlCl_3$ = 325.4 g

Volume of solution = 500.0 mL

Molar mass of $AlCl_3$ = 133.34 g/mole

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

$\text{Molarity}=\frac{\text{Mass of }AlCl_3\times 1000}{\text{Molar mass of }AlCl_3\times \text{Volume of solution (in mL)}}$

Now put all the given values in this formula, we get:

$\text{Molarity}=\frac{325.4g\times 1000}{133.34g/mole\times 500.0mL}=4.88mole/L=4.88M$

Therefore, the molarity of a solution is, 4.88 M

6 0

3 years ago

Read 2 more answers

Can chopper be changed to gold? Explain

Firlakuza [10]

Answer:

A team of Chinese researchers have turned cheap copper into a new material “almost identical” to gold, according to a study published in peer-reviewed journal Science Advances on Saturday. The fast-moving ionized particles blasted copper atoms off the target.

hope this helps

have a good day :)

Explanation:

7 0

3 years ago