Each experiment tests for 20 variables and I computed the correlation for all possible pairs (190 independent correlations). There were 20 participants in each of the two experiments for the replication simulations and 40 participants in the single experiment case.
Without corrections for multiple comparisons
When you choose a bigger group without replication, you get 9.5 significant correlations per experiment
With corrections for multiple comparisons (Bonferroni)
When you choose a bigger group without replication, 5% of the experiments allow you to get a significant experiment, which is expected value given our significance threshold of 0.05.