Acids, Bases, and pH: An acid is a substance that produces H{eq}^+ {/eq} ions in solution, while a base is a substance that produces OH{eq}^- {/eq}. pH is a measure of the concentration of H{eq}^+ {/eq} in solut...
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A very strong acid has a very weak base. Critique this statement. Acids If an acid easily gives off a proton, then it will be classified as a strong acid. However, if an acid partially release a proton is termed as a weak acid. Examples of strong acid include {eq}{\rm{HCl, HN...
a你是付现金还是刷卡 You are pay the cash or brush the card[translate] aThe extracts of C. officinalis showed good inhibitory activity against PTP1B in HTS assay, in which oleanolic acid 1, ursolic acid 2, and corosolic acid 3 were the main components. In our compound library against...
PCC1 only exhibited toxicity toward control cells when used at 600 μM or higher (Fig.2b). A time course of caspase 3/7 activity indicated that PCC1 exerted apoptotic effects within 12 h, reaching a plateau at 24 h (Fig.2c). This finding was largely consistent with viability mea...
). The similar LF1 haplotypes observed on autosomes 4, 6 and 7 when averaging across entire chromosomes are likely the result of one or a few generations of backcrossing with the LF_MY parent population. Taken together our results suggest that the LF1 clone is likely the product of a ...
Observations on 50 patients over considerable periods in which infection was absent or very slight showed ranges of pH level between 4 and 7"4 with an average pH value of 5'8. Taking, therefore, pH values of 5 or less as unusually acid urines we find such values to be characteristic of...
value =5.45. At what concentration ratio of sodium acetate to acctic acid would the indicator show a colour half-way between those of its acid and conjugate base forms ? [pKa of acetic acid =4.75, log 2=0.3] A 4:1 B 6:1 C 5:1 D 3:1 ...
Which pH value indicates a solution that has more hydrogen ions that hydroxide ions? a. pH 9 b. pH 4 c. pH 7 What is the pH range of an acid? Of a base? What would be the pH value of a solution where the number of H+ ions = OH- ions? A solutio...
acid peptide8,9,10. These CAP-derived peptides (CAPE; PxGNxxxxxPY) enhance plant immunity8,9or negatively regulate salt-stress tolerance11. However, it is unclear whether a protease is involved in the cleavage of the CNYx motif and if there is a receptor to perceive CAPE peptides that ...