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Murrr4er [49]
3 years ago
12

The neuron functions to

Chemistry
1 answer:
patriot [66]3 years ago
7 0

Answer:

B) neuron or nerve cell work is to carry messages

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How many grams of chromium are required to react with 125ml of 0.75m cuso4?
evablogger [386]
Chromium and copper (ii) sulfate react according the reaction below;
 2Cr + 3CuSO4 = 3Cu +Cr2(SO4)3
We can calculate the number of moles of CuSO4 present;
no of moles of CuSO4 = 0.75 × 0.125 = 0.09735 moles
According to the reaction the mole ratio is 2 : 3
Moles of Chromium = (0.09735 × 2)/3
                                = 0.0625 Moles
Mass of chromium = 0.0625 moles × 52 g/mole 
                               = 3.25 g of chromium
8 0
3 years ago
3.
Katena32 [7]

Answer:

it's A endothermic its when two objects rub each other to form heat this is also known as friction force

6 0
3 years ago
A student increases the temperature of a 417cm³ balloon from 278k to 231k. Assuming constant pressure, what should the new volum
viva [34]
Charles law states that volume of gas is directly proportional to temperature at constant pressure 
V/T = k
where V - volume , T - temperature and k - constant
\frac{V1}{T1} =  \frac{V2}{T2}
where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 

in the question it states that the temperature has been increased from 278 K to 231 K but it should actually be temperature is decreased from 278 K to 308 K
substituting the values in the equation 
\frac{417cm^{3} }{278K} =  \frac{V}{308 K}
V = 462 cm³
the answer should be D. 462 cm³ 
3 0
3 years ago
Fill in the word that correctly completes this sentence.
crimeas [40]
Mixtures are made up of 2 or more substances that are together in the same place but aren’t chemically bonded.
5 0
3 years ago
When the heat of reaction (H=ve), the reaction is Endothermic reaction<br> True<br> False
juin [17]
False because that doesn’t make sense
6 0
3 years ago
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