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seropon [69]
3 years ago
13

"In a test tube was add a piece of Zn and 2 mL of HCl (.1M). This reaction produced ZnCl2 and Hydrogen gas. This reactions is a:

Chemistry
1 answer:
omeli [17]3 years ago
4 0

Answer:

d.  A single replacement reaction.

Explanation:

The zinc replaces the hydrogen in the hydrochloric acid.

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What has to happen to join two monosaccharide units into a disaccharide?
omeli [17]
A condensation reaction forming a glycosidic bond. so in other words a monosaccharide joining together to form a disaccharide. 

5 0
3 years ago
Calculate the mass of sodium azide required to decompose and produce 2.104 moles of nitrogen. Refer to the periodic table to get
Alexxx [7]

91 grams of sodium azide required to decompose and produce 2.104 moles of nitrogen.

Explanation:

2NaN3======2Na+3N2

This  is the balanced equation for the decomposition and production of sodium azide required to produce nitrogen.

From the equation:

2 moles of NaNO3 will undergo decomposition to produce 3 moles of nitrogen.

In the question moles of nitrogen produced is given as 2.104 moles

so,

From the stoichiometry,

3N2/2NaN3=2.104/x

= 3/2=2.104/x

3x= 2*2.104

   = 1.4 moles

So, 1.4 moles of sodium azide will be required to decompose to produce 2.104 moles of nitrogen.

From the formula

no of moles=mass/atomic mass

        mass=no of moles*atomic mass

                   1.4*65

               = 91 grams of sodium azide required to decompose and produce 2.104 moles of nitrogen.

4 0
3 years ago
the formula of calcium oxide is CaO. What is the formula of the ionic compound containing calium abd sulfate ions
sineoko [7]

Answer:

CaS

Explanation:

Hello!

In this case, since calcium's oxidation state when forming ionic bonds is +2 and sulfur's oxidation state when bonding those bonds is -2, for the required formula we write:

Ca^{2+}S^{2-}

Now, since they have the same charge number, we infer the ionic compound formed when they bond is calcium sulfide:

CaS

Best regards!

5 0
3 years ago
Which noble gas is closest to magnesium
Charra [1.4K]
If you go backwards two elements, you will find Neon (Ne). If you go forwards six, you will find Argon (Ar).       so the closest will be neon
3 0
3 years ago
How much NaNO3 will dissolve into 100 g of Water at 35*C? *<br> 45 g<br> 100 g<br> 80 g<br> 150 g
VARVARA [1.3K]

Answer:

100g

Explanation:

8 0
3 years ago
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