3 years ago

Which type of volcano forms when eruptions contain mostly dush ashes and cinders?

Chemistry

1 answer:

Alisiya [41]3 years ago

6 0

Stratovolcanoes, or composite volcanoes, mostly erupt dust, ash, and cinders.

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The concentration of H30 in your swimming pool is 4 x 10^-5 M. What is the pH of your pool? O a.-4.4 Ob.4.4 Oc. 0.00004 O d.-0.6

mariarad [96]

Answer:

b. 4.4

Explanation:

pH is related to the concentration of H₃O⁺ through the following equation:

pH = -log([H₃O⁺]) = -log(4 x 10⁻⁵)

pH = 4.4

8 0

4 years ago

Which of the following elements is a metal in the periodic table

OverLord2011 [107]

Answer:

12 My Magnesium

13 Al Aluminum

19 K Potassium

20 Ca Calcium

Explanation:

I think

8 0

3 years ago

You are using a standardized 0.1250 M solution of sodium hydroxide to determine the concentration of sulfuric acid. After pipett

Sergeu [11.5K]

Answer: Thus the concentration of the sulfuric acid is 0.1201 M

Explanation:

$H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O$

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $H_2SO_4$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

We are given:

$n_1=2\\M_1=?\\V_1=10.00mL\\n_2=1\\M_2=0.1250M\\V_2=19.22mL$

Putting values in above equation, we get:

$2\times M_1\times 10.00=1\times 0.1250\times 19.22\\\\M_1=0.1201M$

Thus the concentration of the sulfuric acid is 0.1201

4 0

3 years ago

Does water have greater heat of fusion or greater heat of vaporization?

Oxana [17]

Answer:

The heat of vaporization

Explanation:

6 0

4 years ago

Calculate the pH of a solution that has [H3O+]=4.3 x 10^-5 M

Neko [114]

Answer:

pH = 4.4

Explanation:

pH = -log[H₃O⁺]

= -log(4.3 × 10⁻⁵)

pH = 4.37 = 4.4

I'm actually learning this in my chemistry class right now lol. Hope this helps though. :)

6 0

3 years ago