3 years ago

What affects the nervous system? and how does it affect the nervous system?

Chemistry

2 answers:

vazorg [7]3 years ago

6 0

When you get injured or hurt it affects the nervous system and let’s it react by the severity.

Stella [2.4K]3 years ago

6 0

Being in pain or being nervous lol

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Hlo ;) lol im banned and my name is kimboslicer it is so sad my accout is bloked 4 23:12

Sonbull [250]

Answer:

lol im sorry man

Explanation:

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3 years ago

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Josh did an experiment recording the changes in temperature in sand and water when exposed to a light source, and then when the

asambeis [7]

i think the answer is c

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4 years ago

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A student finds a piece of metal that she thinks is aluminum. She finds the volume to be 245 cm^3 and the mass to be 612 grams.

natta225 [31]

Answer:

Density = 2.5 g/cm³ , The metal is aluminium.

Explanation:

Density is defined as the ratio of the mass and the volume

Thus,

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

Given that:

Mass = 612 grams

Volume = 245 cm³

Thus, Density is:

$Density=\frac {612}{245}\ g/cm^3$

Density = 2.5 g/cm³

Metals are shiny with high density.

The density of aluminium falls is approx 2.6 g/cm³ and not other metal's density falls in this range.

The metal is aluminium.

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4 years ago

Write the corresponding word equations for the reactions between; (a) metals and water

Salsk061 [2.6K]

Answer:

M + H2O = MO + H2

Explanation:

When metals react with water they form oxides of the metal and hydrogen gas

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3 years ago

When a 6.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 2.71 kJ ⋅ K − 1 , the tempe

Umnica [9.8K]

Answer:

Molar heat enthalpy of KBr = -19.89 kJ/mol

Explanation:

Change in temperature (Δt) = 0.370 K

Heat capacity = 2.71 kJ ⋅ K^-1

Heat absorbed by calorimeter = heat capacity × change in temperature

= 2.71× 0.370

= 1.0027 kJ

Molar mass of KBr = 119 g/mol

No. of moles of KBr = 6.00/119

= 0.0504 mol

Heat absorbed by the calorimeter is given by KBr.

Now calculate the heat released by per mol of KBr as follows:

Heat released by per mol of KBr = 1.0027 kJ / 0.0504 mol

=19.89 kJ/mol

Heat is released therefore, sign will be negative.

Molar heat enthalpy of KBr = -19.89 kJ/mol

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3 years ago