An elements atomic number is 57. How many protons would an atom of this element have?

Which of these is an appropriate instrument to measure mass? balance burette ruler graduated cylinder

What are the principal alloy elements of an AISI 4340 steel? How much carbon does it have? Is it hardenable? By what techniques?

Which supernatural element is emphasized? O A. Goblin O B. Ghost O c. Prophecy D. Angel O

Chemists use activity series to determine whether which type of reaction will occur?

What affect does attendance have on students' grades in science class? Write the independent variable, the dependent variable, and the hypothesis.

Select the correct answer. A man pours some hot coffee into a small cup from a large jug that contains enough coffee for several cups. Which statement correctly compares the coffee in the cup and in the jug? A.

Is sponge cake a heterogeneous mixture

Describe three skills people use to conduct scientific investigations

The surface temperature on Venus may approach 739 K. What is this temperature in degrees Celsius?

Complete the acid-base reaction between butyric acid HC4H7O2 and potassium hydroxide KOH. Do not include phase designations for any of the reactants or products. Be sure to include the charge for any charged species.