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2 years ago

Which is the command center of the body

Chemistry

2 answers:

ankoles [38]2 years ago

4 0

Answer:

nervous system

or u can say brain too

Explanation:

hope this is what u want

Nataliya [291]2 years ago

4 0

Answer:

Your nervous system is your body's command center.

Explanation:

since it is originated from your brain, it controls your movements, thoughts and automatic responses to the world around you.

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PLEASE HELP! (IM GIVING BRAINLIEST) Iron is a transition metal and, as such, can form two types of "oxide" salt compounds, FeO a

belka [17]

Answer:

See explanation

Explanation:

Iron exhibits two stable oxidation states, +2 and +3 states. The difference between FeO and Fe2O3 is that, in FeO, Fe is in the +2 oxidation state while in Fe2O3, Fe is in the +3 oxidation state

In FeO, iron looses two electrons which are gained by oxygen as follows;

Fe^2+ + O^2- -----> FeO

In Fe2O3, Fe looses six electrons while oxygen has gained six electrons as shown;

2Fe^3+ + 3O^2- ------>Fe2O3

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2 years ago

How does magnification occur in an electron microscope?

Nady [450]

An electron beam makes the object become larger.

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2 years ago

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How do elements of the periodic table affect economy

Bess [88]

They don’t, what you even on about

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2 years ago

A chemistry student needs of acetone for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student dis

galben [10]

Answer:

The answer is " $7.90 \ g$ ".

Explanation:

Please finds the complete question in the attached file.

$Volume = 10.0 \ mL \\\\Density =0.79 g\ cm^3$

$\text{Density}=\frac{Mass}{Volume}$

$Mass = Density \times Volume$

$=(0.790 g\ cm^3) \times 10.0 \ mL\\\\=7.90 \ g$

The mass of acetone to be weighed is $7.90 \ g$

8 0

2 years ago

How many milliners of hydrogen gas ar produced by the reaction 0.020 moles of magnesium with excess of hydrochloride acid at sto

jeyben [28]

Answer:- 448 mL of hydrogen gas are formed.

Solution:- It asks to calculate the volume of hydrogen gas formed in milliliters at STP when 0.020 moles of magnesium reacts with excess HCl acid. The balanced equation is:

$Mg+2HCl\rightarrow MgCl_2+H_2(g)$

There is 1:1 mol ratio between Mg and hydrogen gas. So, the moles of hydrogen gas is also equals to the moles of Mg reacted.

moles of Hydrogen gas formed = 0.020 mol

At STP, volume of 1 mol of the gas is 22.4 L. We need to calculate the volume of 0.02 moles of hydrogen gas.

$0.02mol(\frac{22.4L}{1mol})$

= 0.448 L

They want answer in mL. So, let's convert L to mL using the conversion formula, 1L = 1000mL

$0.448L(\frac{1000mL}{1L})$

= 448 mL

So, 0.020 moles of magnesium would produce 448 mL of hydrogen gas at STP on reacting with excess of HCl acid.

5 0

2 years ago

Which is the command center of the body​

Which is the command center of the body