Number of neutrons = mass number - atomic number
= 99-29 = 70
Ira is working in a lab with a unknown solution. when he inserts the electrical conductivity tester in the in known, the bulb begins to glow brightly. which of these would best describe the unknown liquid ?
A) It contains polar molecules that conduct electricity.
B) The water that the solid is dissolved in conducts electricity.
C) It contains a ionic compound that conducts electricity in solution.
D) It contains a covalent compound that conducts electricity in solution.
ANSWER:
C) It contains a ionic compound that conducts electricity in solution.
for usatestprep YW
I'll do A for you. They are all double displacement reactions. So recall: AB+CD--> CB+AD . Also, knowing the charges will help and make this so easy.
It is 100 because a 5 and up means you round up. also the 9 makes it a 6 rounded up
Answer:
45.72 cm
Explanation:
We are told that there are 2.54 cm in an inch and 12 inches in a foot.
Since 1 inch = 2.54 cm
Then, 12 inches = (12 × 2.54)/1 = 30.48 cm
Now, 12 inches makes 1 foot.
Thus, 1 ft = 30.48 cm
Thus, 1.5 ft = (1.5 × 30.48)/1 = 45.72 cm
Thus, 45.72 cm will make 1.5 feet
