During a chemical reaction, energya) is converted form one from to anotherb) increasesc) decreasesd) is used up as bonds and broken and formed

List what type the following reactions are: 1) NaOH (aq) + KNO3 (aq) - -> NaNO3 (aq) + KOH (aq) 2) CH4 (q) + 2 O2 (m) - > CO2 (a) + 2 H20 (a) 3) 2 Fe (s) + 6 NaBr (aq) - > 2 FeBrs (aq) + 6 Na () 4) CaSO4 (aq) + Mg (OH) 2 (aq) - -> Ca (OH) 2 (aq) +

How many chloride ions are needed to cancel the 2 + charge of magnesium in magnesium chloride?

The concentration of 1130 + in a solution is found to be 1.75 X 10-8 M 250C. Find [OH].

Stress will build until an earthquake occurs if friction along a fault is

How does the intensity of radiation (as measured by Geiger counter vary as distance from the radiation source increases? (that is does intensity increase or decrease? is the graphed line straight or curved?

Cost of production reports can also be used to compare the materials output quantity to the a. administrative staff input quantity. b. materials input quantity. c. conversion output quantity. d. total conversion for the period.

The scientific study of the behavior of matter near 0 K is called

Lithium has one valence electron. Bromine has seven valence electrons. How might they form a covalent bond? A. Bromine donates seven electron to lithium B. Bromine donates an electron to lithium C. Lithium donates seven electrons to Bromine D.

What is the measurement 1042 L rounded off to two signicant digits?

2CO + 2NO yields 2CO2 + N2 which element was oxidized