What has to happen before a star is able to do a chemical reaction?

Marshall determines that a gas has a gage pressure of 276 kPa. What's the absolute pressure of this gas? A. 326 kPa B. 156 kPa C. 376 kPa D. 176 kPa

Zinc metal reacts with hydrochloric acid to produce zinc (II) chloride and hydrogen gas. How many liters of hydrogen gas will be produced at STP when 10.00 g of zinc metal is added to 23.8 mL of a 0.45 M hydrochloric acid solution?

The period of a sound 440-Hertz sound wave is how many second/second.

75. In Canada and the United Kingdom, devices that measure blood glucose levels provide a reading in millimoles per liter. If a measurement of 5.3 mM is observed, what is the concentration of glucose (C6H12O6) in mg/dL?

Taryn has a 90-gram sample of ethanol, which has a specific heat of 2.46 J/g°C. How much heat energy is required to raise the temperature of her sample from 20°C to 35°C?

Consider these statements regarding the body's inability to convert fat to carbohydrates. Select each statement that is true. 1. Acetoacetate is a normal, major energy source for the brain, heart muscle, and renal cortex. 2.

Which is the best term to use describing the energy of position

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Write a net ionic equation for the overall reaction that occurs when aqueous solutions of phosphoric acid (h3po4) and potassium hydroxide are combined. assume excess base. use the pull-down boxes to specify states such as (aq) or (s).

What are the coefficients that will balance the skeleton equation below? n + h ⟶ nh?