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3 years ago

On number 2 if the atom has 3 protons,4 neutrons and 3 electrons what is the charge of the atoms nucleus?

Chemistry

1 answer:

laila [671]3 years ago

7 0

0 is the correct answer.

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HELPP!!!!!!!!!!

muminat

1. Mg + CuSO4 —> MgSO4 + Cu

=> Single displacement reaction

2. 2HCI + Mg(OH)2 —> MgCI2 + H2O

=> Acid - base reaction

3.AgNO3 + NaCI —> AgCI + NaNO3

=> Double displacement reaction

8 0

2 years ago

4.41 g of propane gas (C3H8) is injected into a bomb calorimeter and ignited with excess oxygen, according to the reaction below

gayaneshka [121]

Answer : The heat of the reaction is -221.6 kJ

Explanation :

Heat released by the reaction = Heat absorbed by the calorimeter

$q_{rxn}=-q_{cal}$

$q_{cal}=c_{cal}\times \Delta T$

where,

$q_{rxn}$ = heat released by the reaction = ?

$q_{cal}$ = heat absorbed by the calorimeter

$c_{cal}$ = specific heat of calorimeter = $97.1kJ/^oC=97100J/^oC$

$\Delta T$ = change in temperature = $(T_{final}-T_{initial})=(27.282-25.000)=2.282^oC$

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

$q_{cal}=(97100J/^oC)\times (2.282^oC)$

$q_{cal}=221582.2J=221.6kJ$

As, $q_{rxn}=-q_{cal}$

So, $q_{rxn}=-221.6kJ$

Thus, the heat of the reaction is -221.6 kJ

6 0

2 years ago

Which is the fastest in the universe apart from the light

Salsk061 [2.6K]

Well i did some research and i found out now im not sure if this is completely true but supposedly tachyons are even faster than the speed of light

3 0

2 years ago

What is the temperature of water at low latitudes please help me

bixtya [17]

The average temperature of the ocean surface waters is about 17 degrees Celsius (62.6 degrees Fahrenheit).

Hoped that helped

6 0

2 years ago

Help with this please!!

Natali5045456 [20]

Answer:

#2 is melting ice and #3 is radiation

Explanation:

hope this helped

6 0

2 years ago

Read 2 more answers