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3 years ago

EMERGENCY: PLS HELP OR I WILL FAIL I WILL MARK BRAINLIEST!!

Chemistry

2 answers:

Levart [38]3 years ago

6 0

Answer:

hope it helps

Explanation:

Dvinal [7]3 years ago

6 0

Answer:

Neutron is a neutral particle located in the nucleus of the atom

Electron cloud is the area of the atom surrounding the nucleus where electrons can be found

Electron is a negatively charged particle that orbits the nucleus of an atom

Proton is a positively charged particle located in the nucleus of an atom

Nucleus is the central part of the atom containing protons and neutrons

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Classify these compounds as acid, base, salt, or other.? 1. ch3oh 3. hno3 5. nabr

ELEN [110]

<span> </span><span>1. Alcohol(other)
3. Acid
5. Salt

</span>

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3 years ago

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Elements may be individual atoms or they may form molecules. Compounds can only have which form? PLEASE ANSWER FAST WILL GIVE BR

son4ous [18]

Answer:

All compounds are molecules

I got you! i hope i helped

Explanation:

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3 years ago

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Choose the correct total number of electron domains (bonding and nonbonding) about a central atom if the angle(s) between the el

slamgirl [31]

Answer:

The central atom has 3 electron domains.

Explanation:

According to the Valence Shell electron pair repulsion theory (VSEPR) put forward by Gillespie and Nyholm in 1957, the shape of a molecule is determined by repulsion between all the electron pairs (electron domains) present in the valence shell.

The electron pairs or electron domains are known to position themselves as far apart in space as possible in order to minimize repulsions.

Hence, when the central atom of a molecule contains three electron domains, they are positioned at an angle of 120° from each other to minimize repulsions. Hence the answer.

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3 years ago

A scooter maintains a pace of 1.45 minutes per mile, with fuel economy of 85 miles per gallon. How many seconds can it travel on

vlada-n [284]

Answer:

281s

Explanation:

Given parameters:

Speed of the scooter = 1.45min per mile

Fuel economy of engine = 85miles per gallon

Quantity of fuel = 145mL

Unknown:

Time of travel with the volume of fuel given = ?

Solution:

To solve this problem, we need to find the distance the fuel will last.

Rate of fuel consumption by the engine = 85miles per gallon

Convert 145mL to gallons;

3785.41mL = 1 gallon

145mL will therefore give $\frac{145}{3785.41}$ = 0.038gallons

So;

Distance covered = 85miles per gallon x 0.038gallons = 3.23miles

From;

Rate of travel = $\frac{time }{distance}$

Time = rate of travel x distance = 1.45 minutes per mile x 3.23miles

Time = 4.7min

1 min = 60s

4.7min = 4.7 x 60 = 281s

6 0

3 years ago

Would any Chemistry braniacs be kind enough to help explain how to work these out? Any help is appreciated, thanks

o-na [289]

Answer:

NO.3) Mass of Al2O3 formed = 229.5g

7 0

2 years ago