The mass number of elements practice exercise 3

A farmer sends a fertilizer sample for analysis. The lab finds Nitrogen atoms with 7 protons and 9 neutrons. Calculate the mass number and explain how an incorrect Nitrogen mass might affect plant uptake. (2 marks)

A farmer sends a fertilizer sample for analysis. The lab finds Nitrogen atoms with 7 protons and 9 neutrons. Calculate the mass number and explain how an incorrect Nitrogen mass might affect plant uptake. (2 marks)

A farmer sends a fertilizer sample for analysis. The lab finds Nitrogen atoms with 7 protons and 9 neutrons. Calculate the mass number and explain how an incorrect Nitrogen mass might affect plant uptake. (2 marks)

During a flame test in class, a student records the atomic structure of Sodium. The image below shows 11 protons and 12 neutrons. Calculate the mass number and explain how this value affects the flame colour observed. (2marks)

During a flame test in class, a student records the atomic structure of Sodium. The image below shows 11 protons and 12 neutrons. Calculate the mass number and explain how this value affects the flame colour observed. (2marks)

During a flame test in class, a student records the atomic structure of Sodium. The image below shows 11 protons and 12 neutrons. Calculate the mass number. (1 mark)

A student intern at a water treatment plant is asked to test for hardness in water. The lab report shows the presence of Calcium atoms with 20 protons and 18 neutrons. Calculate the mass number and explain how this information helps determine whether the water is suitable for industrial use. (2 marks)

A student intern at a water treatment plant is asked to test for hardness in water. The lab report shows the presence of Calcium atoms with 20 protons and 18 neutrons. Calculate the mass number and explain how this information helps determine whether the water is suitable for industrial use. (2 marks)

A student intern at a water treatment plant is asked to test for hardness in water. The lab report shows the presence of Calcium atoms with 20 protons and 18 neutrons. Calculate the mass number and explain how this information helps determine whether the water is suitable for industrial use. (2 marks)

A student intern at a water treatment plant is asked to test for hardness in water. The lab report shows the presence of Calcium atoms with 20 protons and 18 neutrons. Calculate the mass number. (1 mark)

In a local clinic, a doctor orders a test to measure Phosphorus in a patient’s blood. Lab results show atoms with 15 protons and 16 neutrons. Calculate the mass number and explain why the mass number must be correct for interpreting patient health. (2 marks)

In a local clinic, a doctor orders a test to measure Phosphorus in a patient’s blood. Lab results show atoms with 15 protons and 16 neutrons. Calculate the mass number and explain why the mass number must be correct for interpreting patient health. (2 marks)

In an electronics shop in Nairobi, a technician tests a rechargeable battery that contains lithium. The lithium atoms in the battery are found to have 3 protons and 4 neutrons. Calculate the mass number and explain why the correct mass number is important for battery performance.  (2 marks)

In an electronics shop in Nairobi, a technician tests a rechargeable battery that contains lithium. The lithium atoms in the battery are found to have 3 protons and 4 neutrons. Calculate the mass number and explain why the correct mass number is important for battery performance.  (2 marks)

In an electronics shop in Nairobi, a technician tests a rechargeable battery that contains lithium. The lithium atoms in the battery are found to have 3 protons and 4 neutrons. Calculate the mass number and explain why the correct mass number is important for battery performance.  (2 marks)

In a local clinic, a doctor orders a test to measure Phosphorus in a patient’s blood. Lab results show atoms with 15 protons and 16 neutrons. Calculate the mass number and explain why the mass number must be correct for interpreting patient health. (2 marks)

In a local clinic, a doctor orders a test to measure Phosphorus in a patient’s blood. Lab results show atoms with 15 protons and 16 neutrons. Calculate the mass number and explain why the mass number must be correct for interpreting patient health. (2 marks)

A doctor at a local clinic orders a test to measure phosphorus levels in a patient's blood. The lab results indicate that the most abundant phosphorus atoms present have 15 protons and 16 neutrons.a) Calculate the mass number of these phosphorus atoms. (1 mark)b) Explain why the mass number of a specific isotope is generally not a factor in interpreting the health of a patient based on a standard blood test. (1 mark)

A gas cylinder label reads that it contains Argon atoms. Using the image below, calculate the mass number and explain why knowing this helps regulate the safety of the gas used. (2 marks)

A gas cylinder label reads that it contains Argon atoms. Using the image below, calculate the mass number and explain why knowing this helps regulate the safety of the gas used. (2 marks)

A doctor is preparing a patient for an MRI scan, which uses Helium atoms. Using the image below, calculate the mass number and state why stable atoms are important in medical imaging.  (2 marks)

A doctor is preparing a patient for an MRI scan, which uses Helium atoms. Using the image below, calculate the mass number and state why stable atoms are important in medical imaging.  (2 marks)

A water treatment plant technician studies the elements in clean water and sees Hydrogen atoms with 1 proton and 0 neutrons. What is the mass number of these Hydrogen atoms, and how does it help in determining water purity? (1 mark)

A water treatment plant technician studies the elements in clean water and sees Hydrogen atoms with 1 proton and 0 neutrons. What is the mass number of these Hydrogen atoms, and how does it help in determining water purity? (1 mark)

A student performing an experiment finds that a sample contains Calcium atoms with 20 protons and 20 neutrons. What is the mass number of the Calcium atoms, and why is this information important in chemical reactions?  (2 marks)

A student performing an experiment finds that a sample contains Calcium atoms with 20 protons and 20 neutrons. What is the mass number of the Calcium atoms, and why is this information important in chemical reactions? (2marks)

A student performing an experiment finds that a sample contains Calcium atoms with 20 protons and 20 neutrons. What is the mass number of the Calcium atoms, and why is this information important in chemical reactions? (2marks)

A farmer is reading a label on a fertilizer bag that contains Nitrogen atoms. The packaging shows each Nitrogen atom has 7 protons and 7 neutrons. What is the mass number of the Nitrogen used in this fertilizer, and why is this important to know? (2 marks)

A farmer is reading a label on a fertilizer bag that contains Nitrogen atoms. The packaging shows each Nitrogen atom has 7 protons and 7 neutrons. What is the mass number of the Nitrogen used in this fertilizer, and why is this important to know? (2 marks)