Answer:
<h3>The answer is 43.48 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass = 500 g
volume = 11.5 cm³
We have
We have the final answer as
<h3>43.48 g/cm³</h3>
Hope this helps you
You would add water to the mixture to dissolve the salt. When the salt is dissolved, you have your sand alone.
You haven't given the synthesis reaction but in general, In the simplest cases, a synthesis reaction occurs when two different atoms or molecules interact to form a different molecule or compound. Most of the time, when a synthesis reaction occurs, energy is released and the reaction is exothermic. However, an endothermic outcome is also possible. Synthesis reactions are one of the major classes of chemical reactions, which include but are not limited to, single displacement, double displacement, and combustion reactions.
Answer:
1.69 moles of ammonia are needed to produced 45.5 g of water.
Explanation:
Given data:
Mass of water = 45.5 g
Moles of ammonia required = ?
Solution:
Chemical equation:
4NH₃ + 5O₂ → 4NO + 6H₂O
Number of moles of water:
Number of moles = mass/ molar mass
Number of moles = 45.5 g/ 18 g/mol
Number of moles = 2.53 mol
Now we will compare the moles of water with ammonia.
H₂O : NH₃
6 : 4
2.53 : 4/6×2.53 = 1.69 mol
1.69 moles of ammonia are needed to produced 45.5 g of water.
Answer:
A. A concept in geology that describes transitions and relationships among the tree main rock types.
D. A series of processes that create and transform the types of rocks in the Earth’s crust.
Explanation:
A and D are the best two answers from the choices below because they both correctly describe the rock cycle.
The rock cycle which according to Wikipedia is a basic concept in geology that describes transitions through geologic time among the three main types of rock;
1. Sedimentary,
2. Metamorphic and
3. Igneous rocks
A rock cycle can take very long time. It could be thousands or millions of years
