300.0 watt immersion heater is used to heat 250.0g of water from 10.0 degree c to 70.0 degree c how many minutes did this take​

In a laboratory, nakisha mixes sodium hydroxide solution with an indicator called phenolphthalein. when combined, they create a pink solution. nakisha wonders if mixing other solutions with phenolphthalein will also create this pink color. how could she use the scientific inquiry process to explore it further?

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery