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o-na [289]
2 years ago
13

What is an isotope? atoms of the same element with different number of​

Chemistry
2 answers:
geniusboy [140]2 years ago
7 0

Answer:

The same element that contain equal number if protons but different number of neurons in their nuclei and hence differ in relative atomic mass

BlackZzzverrR [31]2 years ago
4 0

Answer:

neutrons

Explanation:

Different neutron number casues difference in mass number

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Using the Reasoning Tool to Write a Scientific Argument
FinnZ [79.3K]

yes your are right because water do have a stronger attraction

8 0
2 years ago
The elements with 8 electrons in an outer 'd' subshell belong to Group*
Ivenika [448]

Answer:

yftcwertyuiokjbvchff

Explanation:

8 0
3 years ago
The aromatic hydrocarbon cymene (C10H14) is found in nearly 100 spices and fragrances, including coriander, anise, and thyme. Th
andrezito [222]

Answer : The thermal energy produced during the complete combustion of one mole of cymene is -7193 kJ/mole

Explanation :

First we have to calculate the heat released by the combustion.

q=c\times \Delta T

where,

q = heat released = ?

c = specific heat of calorimeter = 3.640kJ/^oC

\Delta T = change in temperature = 19.35^oC

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

q=3.640kJ/^oC\times (19.35)^oC

q=70.43kJ

Thus, the heat released by the combustion = 70.43 kJ

Now we have to calculate the molar enthalpy combustion.

\Delta H=-\frac{q}{n}

where,

\Delta H = molar enthalpy combustion = ?

q = heat released = 70.43 kJ

n = number of moles cymene = \frac{\text{Mass of cymene}}{\text{Molar mass of cymene}}=\frac{1.608g}{164.22g/mol}=0.009792mole

\Delta H=-\frac{70.43kJ}{0.009792mole}=-7193kJ/mole

Therefore, the thermal energy produced during the complete combustion of one mole of cymene is -7193 kJ/mole

4 0
3 years ago
C12H26+Oxygen=12CO2+water<br>calculate the mass of one mole of the liquid alkane C12H26.​
Inessa [10]

Answer:

170.38g is the mass of 1 mole of C₁₂H₂₆

Explanation:

To solve this question we must find the molar mass of the alkane C₁₂H₂₆. The molar mass is defined as the mass of one mole of a substance.

In 1 mole of C₁₂H₂₆ we have 12  moles of Carbon and 26 moles of Hydrogen. With the periodic table of elements we can know the molar mass of 1 mole of Carbon and 1 mole of hydrogen, and, thus, the molar mass of the alkane (Molar mass C = 12.01g/mol, H = 1.01g/mol)

<em>Molar mass C₁₂H₂₆:</em>

12C = 12*12.01g/mol = 144.12g/mol

26H = 26*1.01g/mol = 26.26g/mol

144.12g/mol + 26.26g/mol =

<h3>170.38g is the mass of 1 mole of C₁₂H₂₆</h3>
7 0
2 years ago
What is the total number of atoms in the following formula? CaBr2
grin007 [14]
The number of atoms is 3
7 0
2 years ago
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