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.
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Molarity is a way of expressing concentration that is equal to the ratio of the moles of the solute to the liters of solution. The amount of substance in moles can be calculated through,
moles = (molarity) x (volume in liters)
Substituting the values,
moles = (0.135 M) x (5.0 L) = 0.675 moles
Multiply this value with the molar mass of sodium ion,
mass = (0.675 moles) x (23 g/ mole) = 15.525 grams
Therefore, the mass of sodium ion in the blood is 15.525 grams.
4.658. Accuracy refers to how close the experimental value is to the actual value. Precision is how close a set of data is to one another.
Answer:
I think it's the third one
Explanation:
HEY PLS DON'T JOIN THE ZOOM CALL OF A PERSON WHO'S ID IS 825 338 1513 (I'M NOT SAYING THE PASSWORD) HE IS A CHILD PREDATOR AND A PERV. HE HAS LOTS OF ACCOUNTS ON BRAINLY BUT HIS ZOOM NAME IS MYSTERIOUS MEN. HE ASKS FOR GIRLS TO SHOW THEIR BODIES AND -------- PLEASE REPORT HIM IF YOU SEE A QUESTION LIKE THAT. WE NEED TO TAKE HIM DOWN!!! PLS COPY AND PASTE THIS TO OTHER COMMENT SECTIONS!! YOU CAN ALSO PUT IT AS A QUESTION< THIS IS NOT A JOKE THIS IS SOMETHING VERY SEROUIS AND DANGEROUS AND SHOULD BE TAKEN VERY SEROUISLY
The answer is sodium bicarbonate :)