2 years ago

Hydrogen and oxygen combining to form water is an example of a physical change.

1 answer:

7 0

In a physical change, the makeup of matter is changed. Evaporation occurs when liquid water changes into a gas. ... Combining hydrogen and oxygen to make water is a physical change.

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A compound contains 72% magnesium and 28% nitrogen. What is its empirical formula?

SashulF [63]

So the empirical formula is Mg3N2

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3 years ago

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Daniel [21]

Answer:

3,3453 thank me later

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4 0

3 years ago

How many milliliters of 0.150 M NaOH are required to neutralize 85.0 mL of 0.300 M H2SO4 ? The balanced neutralization reaction

nekit [7.7K]

Answer : The volume of $NaOH$ required to neutralize is, 340 mL

Explanation :

To calculate the volume of base (NaOH), 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:

$n_1=2\\M_1=0.300M\\V_1=85.0mL\\n_2=1\\M_2=0.150M\\V_2=?$

Putting values in above equation, we get:

$2\times 0.300M\times 85.0mL=1\times 0.150M\times V_2\\\\V_2=340mL$

Hence, the volume of $NaOH$ required to neutralize is, 340 mL

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3 years ago

Identify the missing reagents 1 & 2; draw the final organic product(s)<br> c.

abruzzese [7]

Co2 is correct buddy

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3 years ago

Name the stellar process in which the fusion of hydrogen produces other elements.

Vilka [71]

<span>Hydrogen fusion generates the energy for proton - proton chains and the carbon nitrogen oxygen cycle. It is the nuclear fusion of 4 protons to form a helium 4 nucleus.</span>

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3 years ago