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Existence of gem-diols

In the mechanism for Reimer-Tiemann’s reaction, I was told that two alcohol substituents on the same carbon atom are unstable, and this is why salicylaldehyde is formed. In fact, this is not the first time I have come across this. But if this is true, why is it that geminal diols exist? Is it because […]

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How to make zinc acetate solution

Please, I got 1 kilogram Zinc Acetate Dihydrate and I want to take my mineral zinc 50-100 mg daily from it. I tried to make a solution with 1 liter boil water in 1 teaspoon (5-6 gram) of that zinc acetate powder. As this powder has about 30% elemental zinc so I think I will […]

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Ask Chemistry

How does heat transfer happen?

How does heat transfer happen between system and surrounding if they are separated by a wall?What happens the molecules from surrounding hit the wall and transfer heat?. If my question is not suitable,I am happy to work on it more.

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Bitcoin Cryptocurrency Mastering Development

How do devs decide who should have commit access? what is the process?

Andrew Chow (2020) compiled a great list on when people gained/lost commit access to Bitcoin Core. Satoshi asked Andresen to take over as Lead Maintainer, and Andresen passed the responsibility to Van Der Laan. The Lead Maintainer appears to be selected by the previous Lead Maintainer (by convention). Many others have received/lost commit access. How […]

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Cryptocurrency Ethereum Mastering Development

what is use of question mark ‘?’ in solidity

In solidity I came across a code uint256 q = p % 2 != 0 ? a : b; what does it mean ?

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Mastering Development

ISTIO – Egress Gateway returns – command terminated with exit code 35?

I have installed ISTIO with the below configuration cat << EOF | kubectl apply -f – apiVersion: install.istio.io/v1alpha1 kind: IstioOperator metadata: namespace: istio-system name: istio-control-plane spec: # Use the default profile as the base # More details at: https://istio.io/docs/setup/additional-setup/config-profiles/ profile: default # Enable the addons that we will want to use addonComponents: grafana: enabled: true […]

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Mastering Development

Base URL Discrepancy Between Localhost and Deployed – create-react-app

I am building a web application from the ASP.Net Core React template, whose "ClientApp" React portion appears to be a ‘create-react-app’ project. When I deploy the app to IIS, it gets hosted in a subfolder from the root, i.e. http://myserver.com/SubApp. Because of this, I have changed the "homepage" value in package.json to http://myserver.com/SubApp. What I […]

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Android User Help

Open Outlook links in Chrome

Using Outlook version 4.2041.3 on my Samsung Galaxy A30s with Android 10. If I receive an email with links in it And then click in the link it opens up in a weird browser. I would like for it to open in Chrome instead. How can that be done? Already contacted support.

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Mastering Development System & Network

Nginx server times out on ports 443 and 80

So my problem is the following. I am using CentOS 7.8 and I installed nginx, php, mariadb and certbot. After successfully generating the SSL certificate certbot automatically overwrote the NGINX config file (well I did agree to that and it usually works). I looked at it and nothing seems to be wrong with it. What’s […]

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Mastering Development System & Network

GKE On-prem Support for Openstack

Is is possible to install GKE-On Prem on Openstack private cloud? I tried to explore various documents, I am not able to be sure other Vmware VSphere, other private cloud set ups are supported or not. Thanks for helping!