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mariarad [96]
1 year ago
13

Which of these factors should remain constant in a simulation of natural

Chemistry
1 answer:
musickatia [10]1 year ago
8 0
A is your answer The ratio of females to males
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Describe how ionic compounds form crystals
-Dominant- [34]
An ionic<span> crystal consists of </span>ions<span> bound together by electrostatic attraction. The arrangement of </span>ions<span> in a regular, geometric structure is called a crystal lattice. Examples of such </span>crystals<span> are the alkali halides, which include: potassium fluoride </span>
8 0
3 years ago
2. Which set of symbols represents isotopes of the same element?
MariettaO [177]

Answer:

so you can do the maths your self

Explanation:

isotopes are elements with he same proton number but difference in their neutron number

  • proton number is also known as the atomic number
  • mass number is the sum of the proton number and the neutron number
  • mass number = proton number + neutron number
7 0
3 years ago
If 75 g of liquid water in a calorimeter changes temperature from 25 degrees C to 75 degrees C how much heat was transferred
Assoli18 [71]
Heat=mcDeltaT
heat=(75g)(1.00)(50)
heat=3750
3 0
3 years ago
Think about what would happen if this substance were first in the solid phase, then melted in a liquid. What can you say about t
alexira [117]

Answer:

The melting point of the solid is higher in temperature then it is compared to the freezing point of the liquid.

Explanation:

3 0
3 years ago
N2O5 decomposes to form NO2 and O2 with first-order kinetics. The initial concentration of N2O5 is 3.0 M and the reaction runs f
kow [346]

Answer : The final concentration of N_2O_5 is, 2.9 M

Explanation :

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 5.89\times 10^{-3}\text{ min}^{-1}

t = time passed by the sample  = 3.5 min

a = initial concentration of the reactant  = 3.0 M

a - x = concentration left after decay process = ?

Now put all the given values in above equation, we get

3.5=\frac{2.303}{5.89\times 10^{-3}}\log\frac{3.0}{a-x}

a-x=2.9M

Thus, the final concentration of N_2O_5 is, 2.9 M

3 0
3 years ago
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