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Stella [2.4K]
3 years ago
6

The number of protons in the nucleus of the atom is equal to the atomic number. True False

Chemistry
2 answers:
fiasKO [112]3 years ago
7 0
Yes it is equal,True 
Dominik [7]3 years ago
6 0
True, <span>The </span>number of protons in the nucleus of the atom is equal to the atomic number<span>. The </span>number of electrons in<span> a neutral </span>atom is equal<span> to the </span>number of protons<span>. The </span>mass number<span> of the </span>atom<span>  is </span>equal<span> to the sum of the </span>number of protons<span> and </span>neutrons in<span> the </span>nucleus<span>.</span>
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The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A compound exhibit
Masja [62]

Answer:

B.

Explanation:

3 0
2 years ago
1. How many joules must be added to 10.0 g of water to raise its temperature from 10°C to<br> 15°C?
weqwewe [10]

Answer:

209.3 Joules require to raise the temperature from 10 °C to 15 °C.

Explanation:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m × c × ΔT

Given data:

mass of water = 10 g

initial temperature T1= 10 °C

final temperature T2=  15 °C

temperature change =ΔT= T2-T1 = 15°C - 10°C = 5 °C

Energy or joules added to increase the temperature Q = ?

Solution:

We know that specific heat of water is 4.186 J/g .°C

Q = m × c × ΔT

Q = 10 g × 4.186 J/g .°C × 5 °C

Q = 209.3 J

6 0
3 years ago
Calculate the second volumes. <br> 7.03 Liters at 31 C and 111 Torr to STP
DIA [1.3K]

The second volume :    V₂= 0.922 L

<h3> Further explanation </h3><h3>Given </h3>

7.03 Liters at 31 C and 111 Torr

Required

The second volume

Solution

T₁ = 31 + 273 = 304 K

P₁ = 111 torr = 0,146 atm

V₁ = 7.03 L

At STP :  

P₂ = 1 atm

T₂ = 273 K

Use combine gas law :

P₁V₁/T₁ = P₂V₂/T₂

Input the value :

0.146 x 7.03 / 304 = 1 x V₂/273

V₂= 0.922 L

4 0
3 years ago
How many moles of oxygen gas are needed to produce 4 moles of carbon dioxide gas?
11111nata11111 [884]
Answer: 8 moles
Explanation:
Nc2H6= 4 mol
2C2H6 + 7O2 → 4CO2+6H2O
CO2=4/2⋅4
NCO2= 8 moles
( I write this on paper so the letters and format might be confusing) sorry!!
3 0
2 years ago
a flight stimulator that helps astronauts prepare for a shuttle launch is an example of a (an) ______.
Dimas [21]
A flight simulator that helps astronauts prepare for a shuttle launch is an example of a Scientific Model.
3 0
3 years ago
Read 2 more answers
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