All categories

3 years ago

Balance the following equations:

Chemistry

1 answer:

GuDViN [60]3 years ago

8 0

ANSWERS :-

1)

$\red{2}Na + Br2 → \red{2}NaBr$

2)

$\blue{2}C4H6 + \blue{11}O2 → \blue{8}CO2 + \blue{6}H2O$

3)

$H3PO4 + \green{3}LiOH → \green{3}H2O + Li3PO4$

4)

$Ca(NO3)2 + K2SO4 → CaSO4 + \pink{2}KNO3$

5)

$\orange{2}H2O2→\orange{2}H2O+O2$

(mark me brainliest please I need 3 more :))

$\large\sf\red{thank \: you}$

You might be interested in

This is no help Ok so bydhcvx

Elodia [21]

Do you need help with something?

6 0

3 years ago

Read 2 more answers

In right triangle EFG, mE = 25. In right triangle HJK, mH = 25. Which similarity postulate or theorem proves that EFG and HJK ar

Rus_ich [418]

The angle- angle similarity postulate. It states that if a triangle has two equal corresponding angles the angles are similar.

6 0

3 years ago

Read 2 more answers

2. Which substance will form a solution with water? (Select all that app

cupoosta [38]

Answer:

sugar and salt, as they can dissolve in water. Sugar and salt have a high solubility in water. So, sugar and salt can form a solution with water.

Explanation:

7 0

2 years ago

Need help !!!!! ASAP

Ksivusya [100]

<h2>Hello!</h2>

The answer is:

We have that there were produced 0.120 moles of $CO_{2}$

$n=0.120mol$

We are asked to calculate the number of moles of the given gas, also, we are given the volume, the temperature and the pressure of the gas, we can calculate the approximate volume using The Ideal Gas Law.

The Ideal Gas Law is based on Boyle's Law, Gay-Lussac's Law, Charles's Law, and Avogadro's Law, and it's described by the following equation:

$PV=nRT$

Where,

P is the pressure of the gas.

V is the volume of the gas.

n is the number of moles of the gas.

T is the absolute temperature of the gas (Kelvin).

R is the ideal gas constant (to work with pressure in mmHg), which is equal to:

$R=62.363\frac{mmHg.L}{mol.K}$

We must remember that the The Ideal Gas Law equation works with absolute temperatures (K), so, if we are given relative temperatures such as Celsius degrees or Fahrenheit degrees, we need to convert it to Kelvin before we proceed to work with the equation.

We can convert from Celsius degrees to Kelvin using the following formula:

$Temperature(K)=Temperature(C\°) + 273K$

So, we are given the following information:

$Pressure=760mmHg\\Volume=2.965L\\Temperature=25.5C\°=25.5+273K=298.5K$

Now, isolating the number of moles, and substituting the given information, we have:

$PV=nRT$

$n=\frac{PV}{RT}$

$n=\frac{760mmHg*2.965L}{62.363\frac{mmHg.L}{mol.K}*298.5K}$

$n=\frac{760mmHg*2.965L}{62.363\frac{mmHg.L}{mol.K}*298.5K}\\\\n=\frac{2242mmHg.L}{18615.355\frac{mmHg.L}{mol.}}\\\\n=0.120mole$

Hence, we have that there were produced 0.120 moles of $CO_{2}$

$n=0.120mol$

Have a nice day!

7 0

3 years ago

The elements silicon (atomic number 14) and chlorine (atomic number 17) are both in Period 3. Which is the more reactive element

Svetlanka [38]

Answer;

-Chlorine is more reactive than silicon

Explanation;

-As you move across a period, the nuclear charge will increase; the number of energy levels will stay the same, so there is a stronger and stronger attraction for the electrons.

-The electrons are being held more tightly as you move across a period. It becomes more and more difficult to lose electrons and consequently the reactivity of non metals increases as you go from left to right across the periodic table; Therefore; chlorine is more reactive than silicon.

5 0

3 years ago

Read 2 more answers