Buffers are usually of three types: Acidic buffers: They consist of a weak acid and its salt of a strong base. Th â¦ ey keep the pH constant in the acidic range.Basic buffers: They consist of a weak base and its salt of a strong acid.
I always go with SPF 50+. But, to be honest, there is not *that* much difference on a daily basis from SPF 25 to SPF 50: To figure out your level of protection, divide 1 by the SPF number.That equals the percentage of rays that are allowed to pass through. So SPF 25: 1/25 = 4% of rays pass through.SPF 50 = 1/50 = 2% of rays pass through. always go with SPF 50+. But, to be honest, there is not *that* much difference on a daily basis from SPF 25 to SPF 50: To figure out your level of protection, divide 1 by the SPF number.
What is the GCF? 4 1. Find the GCF of 8 and 12. List the factors of 8. 1, 2, 4, and 8 List the factors of 12. 1, 2, 3, 4, 6, and 12 List the common factors. 1, 2, and 4 What is the GCF? 4 2. Find the GCF of 15 and 20. List the factors of 15. 1, 3, 5, and 15 List the factors of 20. 1, 2, 4, 5, and 20 List the common factors. 1 and 5 What is the GCF? 5 3. Find the GCF of 21 and 35. List the factors of 21. 1, 3, 7, and 21 List the factors of 35.