What are the resistances for each colour of the LEDs?

To calculate the resistor you need to use for an LED: take your supply voltage, subtract 1volt for the drop over the LED (actually 0.7-1.5 v typical) then divide that figure by .015 amps. (15mA is usually very bright). That figure is the resistor value. Lots of tolerance upwards from that value. (e.g if supply is 12 volts, to run an LED try 11/.015= 733 ohms or more (nearest available resistor value is 820 ohms)

Can you provide 24vdc to these LED's?

Yes but you need the original voltage and current for the LED -OR- a resistor box to bring the voltage up from 0 vdc to the full bright voltage level that is safe for the LED. With that and using Ohm's Law or E=IR you can figure out the value of the Dropping Resistor you will need for a 24 vdc supply.

I am using these to back light a clock. i hooked one of them up to a 9v battery. it fried it. will it stop the frying the bulb if i string 4 or 5?

Sounds like you want to string these in series. Add up each LED voltage rating for the color LED and if is equal to or greater than 9v you should be ok. EG: 2.2 + 3.2 + 2.2 + 3.2 + 2.2 = 10.8v should be ok.

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MCIGICM (100 Pcs) 5mm LED Light Diodes, LED Circuit Assorted Kit for Science Project Experiment (Multi-Colored - 5 Color)

MCIGICM (100 Pcs) 5mm LED Light Diodes, LED Circuit Assorted Kit for Science Project Experiment (Multi-Colored - 5 Color)

Product ID: 378497542

Details

Brand
MCIGICM
Item weight
0.03 Kilograms
Number of Packs
5
Theme
science
Unit count
100.00 Count

⚡Max current 20mA for efficient power use

💡100 pcs multi-color LEDs

🔋Forward voltage 2-3.2V optimized

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Description

💡 Light up your creativity — don’t let your projects blend into the background!

BULK PACK POWER - 100 high-quality 5mm LEDs ensuring you never run out mid-innovation.
RELIABLE BRIGHT - High-efficiency LEDs delivering up to 200 lumens for clear, eye-catching illumination.
VERSATILE DIY ESSENTIAL - Perfect for science experiments, electronic projects, car décor, and signal indicators.
VIBRANT 5 COLOR SPECTRUM - White, Red, Green, Blue & Yellow LEDs to bring your projects to life with vivid hues.
PRECISION VOLTAGE CONTROL - Optimized forward voltage (2-3.2V) for consistent brightness and energy efficiency.

MCIGICM’s 100-piece 5mm LED assorted kit offers five vibrant colors (White, Red, Green, Blue, Yellow) with optimized forward voltage and max current of 20mA. Designed for DIY electronics, science experiments, and decorative lighting, these reliable, high-efficiency LEDs deliver bright, consistent illumination to power your next innovation.

Specifications

ASIN	B07PG84V17
ASIN	B07PG84V17
Brand Name	MCIGICM
Customer Reviews	4.5 4.5 out of 5 stars (1,664)
Customer reviews	4.5 4.5 out of 5 stars (1,664)
Date First Available	12 June 2019
Item Weight	0.03 Kilograms
Manufacturer	MCIGICM
Manufacturer	MCIGICM
Material Type	copper
Package Dimensions	9.6 x 9.5 x 1.7 cm; 32 g
Theme	science
UPC	727040387167
Unit Count	100.00 Count

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