Investigating iron thiocyanate requires several chemicals which must be used with caution. using knowledge of these chemicals, select whether the following statements are true or false. when handling hno3, it is important to wash your hands frequently since hno3 is corrosive and can cause burns. to dilute an acid, always add water to add while slowly stirring. fe(no3)3 should be handled with caution because it is an oxidizer and can irritate the skin. kscn is completely nontoxic if kscn is strongly heated it will cause the evolution of cyanide gas. kscn, if combined with a strong base, will also cause the evolution of cyanide gas.

1. False

2. False

3. True

4. False

5. False

6. False

Explanation:

1. Because HNO₃ is corrosive when handling it is important to use gloves and also protection glasses. If it touches the skin, then it's important to wash the area affected.

2. The dilute of acid is exothermic, so it releases a huge amount of heat. For precaution, the acid must be added at the water slowly stirring, so it can be controlled.

3. Fe(NO₃)₃ is an oxidizer and in contact with the skin it can cause irritation, so it must be handled carefully and with protection.

4. KSC can irritate the eyes, so it's toxic.

5. KSCN is not inflammable and it's not combustible, so when heated it will only change the state for gas, but it will not cause the evolution of cyanide gas.

6. If KSCN reacts with a strong base, it will dissociate, and the ions SCN⁻, which can't react with the OH⁻ ions of the base. So, it will only cause the evolution of cyanide gas if it reacts with a strong acid.

odds are decent that your handwriting right now looks a little bit different than it did five years ago, and will look different again in five more. when i look back through my notebooks from middle school to now, i see a long, slow progression from meticulous and teeny letters to bigger, sloppier ones, plus a few side detours: sometime in high school, for example, i decided those loopy cursive lowercase f’s were just the coolest, adopting them as the lone rep for cursive in my otherwise all-print handwriting.

explanation: