Answer:
a) gold - Solid
b) gasoline - liquid
c) oxygen - gaseous
d) olive oil - liquid
e) mercury (found in thermometers) - liquid
f) aluminum - solid
Explanation:
Matter exists in three states viz: solid, gas and liquid. Note that, room temperature is a neither hot or cold temperature, which is about 20-23°C.
A) Gold is a transition metal with the symbol Au. At a room temperature, Gold, like most metals are found as SOLIDS.
B) Gasoline is a liquid mixture of refined hydrocarbons majorly used as fuels.
C) Oxygen is a chemical element with symbol O. It is a constituent of natural air, which is a mixture of different gases including oxygen. Hence, at room temperature, Oxygen is a gas.
D) Olive oil is a vegetable oil got from olives. It is composed of fats and it's a liquid at room temperature.
E) Mercury is an element with symbol Hg. It is the only metallic element found naturally (at room temperature) as a liquid. It is used in thermometers.
F) Aluminum is another chemical element with symbol Al. It is a lustrous metal that occurs as a Solid in room temperature.
Answer:
<h2>The answer is 4.0 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula

From the question
mass = 40 g
volume = 10 mL
The density of the object is

We have the final answer as
<h3>4.0 g/mL</h3>
Hope this helps you
85.33 grams of hydrazine is needed for the reaction.
Rocket fuel contains the reaction between hydrazine and oxygen to break and form nitrogen and water vapour along with steam as it is an exothermic reaction.
<h3>How to calculate the hydrazine amount?</h3>
The reaction can be shown as:

From the periodic chart, it can be said that:
- Mass of nitrogen = 14 gm
- Mass of oxygen = 16 gm
- Mass of hydrogen = 1 gm
The molar mass of hydrazine will be:

Mass of water:

From the reaction, it can be said that,
1 mole of
= 2 moles of 
32 grams of
= ? grams of water

So, for 96 gm of water the hydrazine produced will be,

Therefore, 85.33 grams of hydrazine is needed for the reaction.
Learn more about rocket fuel here:
brainly.com/question/10179270
Answer:
the mass of one spoonful of sugar to nearest gram is 10g
Add hot water into the glass