Answer:
this reminds me of biology
Explanation:
please dont delete this i'm gonna answer it later
Answer:
The answer is Ernest Rutherford.
Answer : The correct answer is 109.
Explanation :
Significant figure : It is defined as the each digits of a number have meaning or contribute to the value of the number.
The addition of given digits is,
43.2 + 50.0 + 16.0 = 109.2
As per the question, the given digits has 3 significant figures. But the answer after addition is 109.2 has 4 significant figures.
The addition rule of significant rule is the least precise number of significant figure in any number of the problem determines the number of significant figures in the answer.
Therefore, from the addition rule, the correct answer is 109.
Answer:
See detailed explanation.
Explanation:
Hello,
In this case, since the International Prototype of the Kilogram (IPK) is an object made of a platinum-iridium alloy that was used to define the magnitude of the mass of the kilogram as it weights 2.2 pounds or approximately 1 kg, yet it was replaced by a new definition of the kilogram based on physical constants. In such a way, it is important because it was the base for the current understanding of what a kilogram is and its relationship with other mass measurements.
Thus, if would not have existed, we were not be able to design and use balances or mass-measuring equipment in order to provide a reliable measure of the real mass of an object.
Best regards.
<u>Answer:</u> The partial pressure of hydrogen is 705.9 mmHg
<u>Explanation:</u>
Dalton's law of partial pressure states that the total pressure of the system is equal to the sum of partial pressure of each component present in it.
To calculate the partial pressure of hydrogen gas, we use the law given by Dalton, which is:
![P_T=p_{H_2}+p_{H_2O}](https://tex.z-dn.net/?f=P_T%3Dp_%7BH_2%7D%2Bp_%7BH_2O%7D)
We are given:
Total pressure of the collection tube,
= 729.8 mmHg
Vapor pressure of water,
= 23.8 mmHg
Putting values in above equation, we get:
![729.7=p_{H_2}+23.8\\\\p_{H_2}=729.7-23.8=705.9mmHg](https://tex.z-dn.net/?f=729.7%3Dp_%7BH_2%7D%2B23.8%5C%5C%5C%5Cp_%7BH_2%7D%3D729.7-23.8%3D705.9mmHg)
Hence, the partial pressure of hydrogen is 705.9 mmHg