All categories

2 years ago

Given the following equation,

Chemistry

1 answer:

VARVARA [1.3K]2 years ago

7 0

Answer:

5 moles

Explanation:

Given data:

Number of moles of HCl = 5 mol

Number of moles of H₂O produced = ?

Solution:

Chemical equation:

HCl + NaOH → NaCl + H₂O

Now we will compare the moles of HCl with H₂O.

HCl : H₂O

1 : 1

5 : 5

5 moles of water will be produced.

You might be interested in

4. The type of thermal energy transfer that heats our homes is called

andrew-mc [135]

Answer:

conduction is the answer

6 0

2 years ago

If you have a pH of 3.35, what is the hydrogen ion concentration of the solution?

melamori03 [73]

Answer: 4.46 x 10^-4M

Explanation:

The pH of a solution is the concentration of hydrogen ion concentration in the solution. Mathematically, it is expressed as pH = -log(H+), where H+ is the concentration of hydrogen ion

On the pH scale, readings are from 1 to 14.

- pH values less than 7 are regarded as acidic. So, the solution with pH 3.35 is said to be acidic, and will produce hydrogen ions.

3.35 = -log(H+)

(H+) = Antilog (-3.35)

(H+) = 0.000446M

Place (H+) in standard form

(H+) = 4.46 x 10^-4M

Thus, the concentration of hydrogen ion in the solution with pH 3.35 is 4.46 x 10^-4M

3 0

3 years ago

An object with the mass of 2300 g has a force of 6.2 Newton's applied to it. What is the resulting acceleration of the object?

Triss [41]

Answer:

$\boxed {\boxed {\sf a\approx 2.7 \ m/s^2}}$

Explanation:

Force is equal to mass times acceleration.

$F=m*a$

By dividing both sides by m, we rearrange the formula for a (acceleration).

$\frac{F}{m} =a$

The force is 6.2 Newtons, but we can convert the units to make the problem easier later on.

A Newton is equal to 1 kg*m/s², so 6.2 N is equal to 6.2 kg*m/s².

The mass is 2300 grams, but we need to convert it to kilograms.

To convert grams to kilograms, divide by 1,000
2300 g/1000= 2.3 kg

$F= 6.2 \ kg*m/s^2\\m=2.3 \ kg$

Substitute the values into the formula.

$a=\frac{6.2 \ kg*m/s^2}{2.3 \ kg}$

Divide. Note that the kilograms or "kg" will cancel each other out (this is why we converted the units).

$a=\frac{6.2 \ m/s^2}{2.3 \ }$

$a=2.69565217 \ m/s^2$

Round to the nearest tenth. The 9 in the hundredth place tells us to round up to 2.7

$a\approx 2.7 \ m/s^2$

The acceleration is about <u>2.7 meters per second squared.</u>

6 0

2 years ago

Mg(OH)2 is a slightly soluble salt what is the Ksp expressi a. [Mg2+][20H J? b. (Mg2+][OH-]2 c. [Mg2][OH-] d. [Mg2][OH-]?

lesantik [10]

Answer:

B) $k_{sp} =[Mg_{aq} ]*[OH_{aq}]^{2}$

Explanation:

Ksp is the solubility product constant.

For a generic chemical equation

$AB_{2} = A_{aq}+2B_{aq}$

The Ksp for this generic chemical equation is

$k_{sp} =[A_{aq} ]*[B_{aq}]^{2}$

So the Ksp fot the Mg(OH)2 is

$k_{sp} =[Mg_{aq} ]*[OH_{aq}]^{2}$

5 0

3 years ago

Which of these describes something that happens as a pilot gets closer to<br> the speed of sound?

maw [93]

Answer:

More drag is created because the molecules cannot "hear" the airplane coming.

Explanation:

7 0

3 years ago