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Paraphin [41]
3 years ago
9

Which statement best describes most chemical changes?

Chemistry
2 answers:
enot [183]3 years ago
7 0
the answer is a - they are slow and gradual processes.
irina1246 [14]3 years ago
6 0

Answer:

A slow and gradual process or otherwise A

Explanation:

i just took the test and is said i was correct

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1.9 mol HCl and 3.9 mol NaOH react according to the equation HCl + NaOH −→ NaCl + H2O . If the limiting reactant is HCl, calcula
aleksley [76]

According to the molar ratio in the equation, for every 1 mole of HCl, 1 mole of NaCl is formed.

Thus, if 1.9 mol of HCl is used up in the reaction, 1.9 mol of NaCl is formed.

So the answer is 1.9 mol of NaCl.

6 0
3 years ago
Which of these would have the lowest boiling point?
KonstantinChe [14]

CO₂, will have the lowest boiling point among the following ,therefore option (d) is correct.

<h3>What do you mean by the boiling point?</h3>

The temperature at which liquid vapor pressure equals atmospheric pressure is referred to as boiling point.

The boiling point is defined as the temperature at which a liquid’s saturated vapor pressure equals the atmospheric pressure surrounding it.

The boiling point for any material is the temperature point at which the material transforms into its form.

The one with the lowest boiling point has the weakest intermolecular forces.

CO₂, will have the lowest boiling point among the following ,therefore option (d) is correct.

Learn more about boiling point, here:

brainly.com/question/1514229

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8 0
2 years ago
What is the shape of sf6​
zmey [24]

Answer:

answer........of the question

3 0
3 years ago
A sample of 5.30 mLmL of diethylether (C2H5OC2H5;density=0.7134g/mL)(C2H5OC2H5;density=0.7134g/mL) is introduced into a 6.50 L L
lilavasa [31]

Answer:

1.16atm

Explanation:

We are going to derive the mass of ether from density

mass=density *volume

Also moles=mass/molecular mass

molar mass C2H5OC2H5 =74.12 g/mole

the density of ether is 0.7134 g/ml

mass C2H5OC2H5 = 5.30 ml x 0.7134 g/ml = 3.78 g

moles C2H5OC2H5 =3.78 g x 1 mole/74.12 g = 0.0509 moles

PV = nRT where P=?; n=0.0509 moles; V=6.50L; R=0.0821 Latm/Kmol; T=35ºC +273 = 308K

P = nRT/V = 0.0509)(0.0821)(308)/6.50

P = 0.198 atm (to 3 significant figures (this is the partial pressure of diethyl ether).  

TOTAL PRESSURE

P1+p2+p3

= 0.198 atm + 0.750 atm + 0.207 atm =1.1550atm

1.16atm(3 significant figures)

5 0
4 years ago
Parents should avoid sharing their own mistakes with children. True/false
Vesna [10]
Parents SHOULDN'T avoid sharing their own mistakes with children.
6 0
3 years ago
Read 2 more answers
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