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3 years ago

Which statement describes a chemical reaction?

Chemistry

2 answers:

yuradex [85]3 years ago

6 0

Answer:

reactants form products when atoms are rearranged.

ELEN [110]3 years ago

4 0

The statement that describes a chemical reaction is the statement c. reactants form products when atoms are rearranged.<span> The atoms of the reactants are arranged is a specific position and number forming a determined compound. In a chemical reaction, the products are different compounds than the reactants, so the atoms have to rearrange to form these new compounds (the products).</span><span />

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Identify the most common reaction conditions for the dehydration of 2,3-dimethyl-2-pentanol.Select all that apply.A. The presenc

defon

Answer:

D. The presence of a base catalyst.

E. The presence of an acid catalyst. and

F. The presence of heat.

Explanation:

8 0

3 years ago

. One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?

son4ous [18]

Answer:

200g or 40 teaspoons

Explanation:

An average human, weighing about 50 pounds, has about 200 g or 40 tps of NACl

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3 years ago

Please help me I'm so confused

iogann1982 [59]

Answer:

105m/3hourz

Explanation:

35 miles per hour, so 3 hours

35x3=105 per 3 hours

6 0

3 years ago

A sample of chlorine gas occupies a volume of 707 ml at 2.90 atm. What is the new pressure in torr if the volume is compressed t

dolphi86 [110]

Answer:

The new pressure is 3850 torr.

Explanation:

The relation between volume and pressure is inverse as per Boyle's law. Its mathematical form is given by :

$P_1V_1=P_2V_2$

Here,

$P_1=2.9\ atm$

$V_1=707\ mL$

$V_2=0.533\ L$

Let $P_2$ is the new pressure. So using Boyle's law we get :

$P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{2.9\times 707}{0.533}\\\\P_2=3846.71\ \text{torr}$

$P_2=3850\ \text{torr}$

So, the new pressure is 3850 torr.

3 0

3 years ago

Osmosis is the process responsible for carrying nutrients and water from groundwater supplies to the upper parts of trees. The o

ad-work [718]

Answer:

The molar concentration would have to be 0,81 M.

Explanation:

The osmotic pressure equation is:

$\pi = M R T$

where:

$\pi$ : osmotic pressure [atm]

M: molar concentration [M]

R: gas constant 0,08205 [atm.L/mol.°K]

T: absolute temperature [°K]

To solve the problem, we just clear M from the osmotic pressure equation and then replace our data using the appropiate units. Clearing the variable M we have:

$M = \frac{\pi }{RT}$

We have to use temperature as absolute temperature (in kelvins), T=29+273=302 °K. Now we can replace our values in the equation:

$M = \frac{20,1 atm}{0,08205 \frac{atm.L}{mol.K} * 302 K }$

As we can see, all units will be simplified and we'll have the molar concentration in mol/L.

$M = 0,81 \frac{mol}{L} = 0, 81 M$

7 0

3 years ago