What energy transfer is occurring when you make a call on a phone?

A. electrical to chemical

B. heat to sound

C. electrical to sound

D. chemical to light

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What is the gas produced when iron (II) sulfide is treated with a nonoxidizing acid?

Food that makes people sick will often

Which is most likely true about electronegativity? a. it tends to be the same across a periodb. it tends to be the same down a groupc. it tends to increase across a period d. it tends to increase down a group?

Which shows the formula for converting from degrees Celsius to degrees Fahrenheit? °F = (9/5 * °C) + 32 °F = 5/9 * (°C - 32) °F = °C - 273 °F = °C + 273

Which property describes a mixture? Select three options. It can be separated by physical methods. It has a single chemical composition. It can appear different from different sources. It cannot be described by a chemical symbol or formula.

Your teacher asks you to follow the instructions in a lab to produce several known chemical reactions. During these procedures, you are required to record any observations that suggest chemical reactions have occurred.

What is the compound name for NF

A main goal of most environmental scientists is to achieve? A - biodiversity B - cost-benefit balance C - sustainability D - supply and demand

Theo is skiing with his friends when he sees an avalanche warning sign. What type of hazard is this? A. Biological B. Chemical C. Social D. Physical

A red blood cell contains 4.0 107 free electrons. what is the total charge of these electrons in the red blood cell?