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Morgarella [4.7K]
3 years ago
6

6th grade help me pleaseeee

Chemistry
2 answers:
Kay [80]3 years ago
5 0

Answer:

protons

Explanation:

the atomic number is the number of protons.

lozanna [386]3 years ago
4 0

Answer:

D

Explanation:

The atomic number is the amount of protons in the nucleus of every atom in a specific substance

Hope this helps!

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How many grams of HNO3 it is required to play 8.75gr N2O<br> 4ZN + 10HNO3-4ZN ( NO3 ) 2 + N20 + 5H2O
Y_Kistochka [10]
Molar mass

 HNO₃ = 63.02 g/mol

N₂O = 44.013 g/mol

The balanced equation is :

<span>4 Zn + 10 HNO₃  = 4 Zn(NO₃)₂ + N₂O + 5 H₂O
</span>
10 * 63.02 g HNO₃-----------> 44.013 g N₂O
        ?   HNO₃ -----------------> 8.75 g N₂O

Mass HNO₃ =  8.75 * 10 * 63.02 / 44.013

Mass HNO₃ = 125 g 

hope this helps!
4 0
4 years ago
Ignoring sign which transition is associated with the greatest energy change?
scoray [572]
Well u said ignoring not me

3 0
3 years ago
The electronegativity of Na is 0.9;Cl is 3.0; where will their shared electron (NaCl)spend most of its time
barxatty [35]
Cl, because a higher electronegativity indicates that the atom attracts more electrons.
8 0
3 years ago
the pressure in a sealed plastic container is 108 kPa at 41 degrees Celsius. What is the pressure when the temperature drops to
Katarina [22]

<u>Answer:</u> The new pressure will be 101.46 kPa.

<u>Explanation:</u>

To calculate the new pressure, we use the equation given by Gay-Lussac Law. This law states that pressure is directly proportional to the temperature of the gas at constant volume.

The equation given by this law is:

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

P_1\text{ and }T_1 are initial pressure and temperature.

P_2\text{ and }T_2 are final pressure and temperature.

We are given:

By using conversion factor:   T(K)=T(^oC)+273

P_1=108kPa\\T_1=41^oC=314K\\P_2=?kPa\\T_2=22^oC=295K

Putting values in above equation, we get:

\frac{108kPa}{314K}=\frac{P_2}{295K}\\\\P_2=101.46kPa

Hence, the new pressure will be 101.46 kPa.

3 0
3 years ago
Arsenic reacts with chlorine to form a chloride if 1.587 g of arsenic reacts with 3.755 g of chlorine what is the simplest formu
Marina CMI [18]
<span>Determining the number chloride molecules that will result from this reaction requires we first determine the number of moles of arsenic and the number of moles of chlorine on hand.

1.587 grams of arsenic divided by its atomic weight of 74.92 grams per mole results in 0.0212 moles.

We do the same for chlorine. 2.755 grams of chlorine divided by 35.45 grams per mole gives us 0.106 moles.
0.106 moles divided by .0212 moles equals 5; therefore, the simplest formula of the chloride produced will be AsCl</span>₅<span>.</span>
8 0
3 years ago
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