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ryzh [129]
3 years ago
9

PLEASE HELP I KNOW THERES A LOT OF QUESTIONS BUT PLEASEEEE!!!!

Chemistry
2 answers:
jekas [21]3 years ago
6 0

Answer:

??

Explanation:

ollegr [7]3 years ago
3 0
This is your whole test why would I answer that I’m not that smart
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An element has a metallic-gray appearance. It also has the properties of both a metal and a nonmetal. In which section of the ta
katrin2010 [14]

Answer:

you would find it in section 3 as these are semi-metals

Explanation:

3 0
3 years ago
Read 2 more answers
Which country contributes the most green house gases to earth'satmosphere?
pshichka [43]
United states of america
5 0
3 years ago
in a reaction 2.5g of sodium sulphate reacted with 4.5g of barium chloride. the products are 3.5g of barium sulphate and the res
klio [65]

The mass of sodium chloride : 3.5 g

<h3>Further explanation</h3>

Given

Reaction :

2.5g of sodium sulphate + 4.5g of barium chloride ⇒ 3.5g of barium sulphate + sodium chloride

Required

The mass of sodium chloride

Solution

Conservation of mass applies to a closed system, <em>where the masses before and after the reaction are the same</em>

From the reaction :

mass of reactants = 2.5 g + 4.5 g = 7.0 g

mass of products = 3.5 g + mass of sodium chloride

mass of reactants = mass of products

7.0 g = 3.5 g + mass of sodium chloride

mass of sodium chloride = 7 g - 3.5 g =3.5 g

3 0
3 years ago
How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 88.1 molesmoles of water vapor?
irga5000 [103]

Answer:

88.1 moles of H₂

Explanation:

Let's make the reaction:

H₂(g) + CO₂(g) → H₂O(g) + CO(g)

Ratio is 1:1

Therefore, 1 mol of hydrogen reacts with 1 mol of carbon dioxide to produce 1 mol of water and 1 mol of carbon monoxide.

In conclusion, 88.1 moles of water must be produced by 88.1 moles of H₂

The reaction can also be written as an equilbrium

H₂(g) + CO₂(g) ⇄ H₂O(g) + CO(g)           Kc

8 0
4 years ago
Which of the following statements is true? A) If Q &lt; K, it means the forward reaction will proceed to form more products. B)
GuDViN [60]

Hey there!:

If Q = K, it means the reaction is at equilibrium.

The correct statments are as follows:

A. If Q < K, it means the forward reaction will proceed to form more products.

B. If Q > K, it means the backward reaction will proceed to form more reactants.

The statement C is true.

Hope this helps!

4 0
3 years ago
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