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Ask Chemistry

Distilling milligram quantities of oil like it’s late 1970s

In a currently retracted* manuscript by Tomas Hudlicky [1, Retraction Watch] the following has been noted: Fifty years ago professors took an active part in all laboratory instructions and they taught advanced techniques to research undergraduates, graduate students, and even postdocs. During my postdoctoral stay in Geneva Professor Oppolzer personally showed me how to distill […]

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Ask Chemistry

What is the molar mass of the solid C6H8N2O4 [closed]

A. 144 g/mol B. 108 g/mol C. 90 g/mol D. 172 g/mol E. 164 g/mol

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Mastering Development Software

Recommendations for building a server for a small business

I somehow got hired to build an application server for a small business. They client wants a simple database that is connected to all the POS terminals of the physical stores, which updates warehouse inventory/stock on sales. I’m currently trying to research and decide how I will go about this.I have never done any projects […]

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Apple User Help

Can’t get 5120 x 1440

I bought a LG 49WL95C-W 49″ 5120 x 1440, but I can’t run it at this resolution with my MacBook Pro (15-inch, 2018) (it’s work fine with my iMac 5K. It’s seems that max I can get is 3840 x 1080 (although the screen menu/information display a current resolution of 5120×1440 which is wrong according […]

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CMS Drupal Mastering Development

How to install drupal 8 on ubuntu 20.04 (LAMP)?

I have Ubuntu 20.04, i installed apache2 and mysql 8 on it, but i can’t install drupal 8, when i try to add database info like usual, it is not working? I traced the possibilities of the error and be sure of solving it .. but it still does not work .. I did not […]

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CMS Drupal Mastering Development

How can I manually upgrade my site?

I have updated my core to 8.9.0, all modules are D9 compatible and now I want to upgrade to 9.0.0. I always did my updates manually (swap core/vendor/root files), but for 8 to 9 drupal.org has only Drush 8 or composer. Upgrading from Drupal 8 to Drupal 9 (or higher) https://www.drupal.org/docs/upgrading-drupal/upgrading-from-drupal-8-to-drupal-9-or-higher Is there no way […]

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User Help Web Apps

How do I rotate text vertically in a Google Slides table cell?

I’m using Google Slides. I would like to be able to add vertical text into a table cell. Microsoft Powerpoint provides this capability. See the screenshot below. How can I do this same action in Google Slides? I searched through all(?) the menu and formatting options.

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Game Creation Mastering Development

Unity: Set RigidBody velocity in FixedUpdate() or Start()?

I’m developing a simple 2D game in Unity (balls hitting bricks), so i have a ball and i want to fire the ball to hit bricks, now to fire the ball i have to set Velocity on the RigidBody component attached to the ball’s GameObject. There are two ways to do that: Method 1: Set […]

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Database Development

SQL SERVER auditing SELECT of a single column

Is this possible, or is table-level the most granular access? So far, Google search has shown nothing, and this screenshot does not mention column, but I thought I’d ask here. SQL Server version is 2012 SP4-OD.

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Ask Games RPG Games

How do Polymorph and Find [Greater] Steed interact?

A bard has used magical secrets to select either Find Steed, or Find Greater Steed and has summoned a mount. They then cast Polymorph on themselves and turn themselves into a T-Rex, because they are cool. Find [Greater] Steed says While mounted on it, you can make any spell you cast that targets only you […]