Answer:
Communication between scientists increased.
Technological advancements were made.
Explanation:
The options:
<em> Metalworkers began using new metals.
</em>
<em> Communication between scientists increased.
</em>
<em> The American Civil War started.
</em>
<em> Technological advancements were made.</em>
<u>The reasons the number of known elements more than double by 1861 would be because technological advancements have been made and communication between scientists increased.</u>
With the advancement in technology, more equipment become available and research became more sophisticated leading to new discoveries. The new discoveries would not have made much difference if they are not adequately communicated to other scientists.
Answer:
the answer you have marked is correct.
C is correct.
Answer:
These systems are defined both by the types of energy and matter they contain and by how that matter and energy move through and between systems. In natural systems, both energy and matter are conserved within a system. This means that energy and matter can change forms but cannot be created or destroyed.
Explanation:
Answer: Measure 114 mL of the 1.75 M solution, and dilute it to 2.00 L.
Explanation:
The number of moles in the solution will remain same on dilution and thus according to Molarity Equation:
= molarity of first solution
= Volume of first solution
= molarity of second solution
= Volume of second solution
Thus 114 ml of 1.75 M solution is taken and the volume is diluted to 2.0 L to make 0.100 M solution.
Answer:
It is a model of the atom that has electrons surrounding the nucleus
Step by step explanation: