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3 years ago

Match the vocabulary word to its definition.

Chemistry

2 answers:

hoa [83]3 years ago

6 0

Answer:

Nucleus - The central part of the atom containing protons and neutrons.

Electron - A positively charged particle located in the nucleus of an atom.

Proton - A positively charged particle located in the nucleus of an atom.

Electron Cloud - The area of the at surrounding the nucleus where electrons can be found.

Neutron - a negatively charged particle that orbits the nucleus of an atom.

Sophie [7]3 years ago

5 0

Answer:

Nucleus- The central part of the atom containing protons and neutrons.

Electron- A negatively charged particle that orbits the nucleus of an atom.

Neutron- A neutral particle located in the nucleus of an atom.

Electrom cloud- The area of the atom surrounding the nucleus where electrons can be found.

Proton- A positively charged particle located in the nucleus of an atom.

I hope this helps!

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How many gallons of gasoline that is 5% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that

Amanda [17]

Answer:

$V_1= 3000 gal$

Explanation:

We have 3 solutions:

Solution 1 (with ethanol)
Solution 2 (no ethanol)
Final solution

$V_f=V_1 + V_2$

and for the ethanol:

$V_f*0.03=V_1*0.05 + V_2*0$

$V_f=V_1 \frac{5}{3}$

Combining:

$V_1 \frac{5}{3}=V_1 + V_2$

$V_1 \frac{2}{3}= V_2$

$V_1= \frac{3}{2} V_2$

If V2=2000 gal:

$V_1= \frac{3}{2} 2000 gal$

$V_1= 3000 gal$

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3 years ago

Identify the units used to measure volume mass.

Strike441 [17]

Answer:

The metric system uses units such as meter, liter, and gram to measure length, liquid volume, and mass, just as the U.S. customary system uses feet, quarts, and ounces to measure these.

Volume: 1 liter is a little more than 1 quart

Mass: 1 kilogram is a little more than 2 pounds

Length: 1 centimeter is a little less than half an

Explanation:

3 0

2 years ago

Glacier National Park in Montana is approximately 4,100 ft above sea level with an atmospheric pressure of 681 torr. At what tem

lapo4ka [179]

Answer : The temperature of liquid is, 369.9 K

Explanation :

The Clausius- Clapeyron equation is :

$\ln (\frac{P_2}{P_1})=\frac{\Delta H_{vap}}{R}\times (\frac{1}{T_1}-\frac{1}{T_2})$

where,

$P_1$ = vapor pressure of liquid at 373 K = 681 torr

$P_2$ = vapor pressure of liquid at normal boiling point = 760 torr

$T_1$ = temperature of liquid = ?

$T_2$ = normal boiling point of liquid = 373 K

$\Delta H_{vap}$ = heat of vaporization = 40.7 kJ/mole = 40700 J/mole

R = universal constant = 8.314 J/K.mole

Now put all the given values in the above formula, we get:

$\ln (\frac{760torr}{681torr})=\frac{40700J/mole}{8.314J/K.mole}\times (\frac{1}{T_1}-\frac{1}{373K})$

$T_1=369.907K\approx 369.9K$

Hence, the temperature of liquid is, 369.9 K

6 0

3 years ago

Read 2 more answers

What elements on the periodic table are most likely to form molecular compounds?

Yuri [45]

Alkaline Earth Metals and Alkali Reactive metals because they need more electrons to acquire octet.

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3 years ago

Loy and Sam have a dog that has a spotted coat. The dog is also excellent at performing tricks.

Wewaii [24]

Answer: the correct option is A ( The spotted coat is an INHERITED TRAIT, and the ability to perform tricks is a LEARNED TRAIT.

Explanation:

Dog is one of the first domesticated animal by man because it has the ability to perceive information and retain it as knowledge for applying to solve problems.

Therefore, the ability to perform tricks is a LEARNED TRAIT. This is so because they have acquired the ability to understand and communicate with humans, and they are uniquely attuned to human behaviors.

INHERITED TRAIT is a trait that can be passed down from one generation to another which are found in genes within the strands of dogs DNA. Some of the inheritable traits includes the following:

- coat color,

- ear type, and.

- tail style.

Therefore the spotted coat is an INHERITED TRAIT

4 0

3 years ago