Neon I think. Go to the periodic table and see which one is the 11th
1. A mixture of ammonium chloride, sand, and zinc chloride should be separated by sublimation.
2. A mixture of zinc chloride and silver chloride should be separated through crystallization.
<h3>What is a separation technique?</h3>
A separation technique can be defined as a technique that is typically used to separate or convert two (2) or more mixture and solution of chemical substances into distinct product such as chemical compounds or elements.
<h3>The types of
separation technique.</h3>
In Chemistry, there are various types of separation technique used for the separation of mixtures or solutions and these include:
In this scenario, the most effective and efficient means to separate a mixture of ammonium chloride, sand, and zinc chloride is by sublimation from solid to gas state.
On the other hand, the best means to separate a mixture of zinc chloride and silver chloride is through crystallization.
Read more on crystallization here: brainly.com/question/4980962
Answer: 8.1 days
Explanation:
Expression for rate law for first order kinetics is given by:
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant = x
a - x = amount left after decay process= 
a) to find rate constant
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
b) for completion of one fourth of reaction
Thus after 8.1 days , one fourth of original amount will remain.
I don’t know but I think it would be products... that’s the best I can give. I’ll look more into it
Define the problem
Explanation:
The first step in a scientific investigation is to define the problem at hand. Definition of a scientific problem makes a scientific investigations possible.
- When preliminary observations are made about a phenomenon. A lot of questions as to why such things occur will arise.
- From the question, we can state the problem and the likely causes.
- The first portal in an inquiry is problem definition.
- This would them lead to the formulation of a hypothesis which contains problem statement and likely causes.
- The hypothesis leads to the design of an experiment from which investigations using experiments can be done.
- The data from the experiments are collected and analyzed.
Learn more:
Experiment brainly.com/question/5096428
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