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3 years ago

Based on the reactivities of the elements involved, which reaction will form products that are more stable than the reactants?

Chemistry

1 answer:

MrRa [10]3 years ago

6 0

Answer:

Exothermic reaction

Explanation:

Since in an exothermic reaction heat is released, the products will be more stable than the reactants.

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Which coefficient placed before HCl will balance the following<br> equation? Zn+HCI ZnCl2 + H2

cupoosta [38]

Explanation:

Given chemical equation

Zn + HCL ➡ ZnCl2 + H2

Now balancing

Zn + 2HCL ➡ ZnCl2 + H2

Hope it will help :)❤

3 0

3 years ago

To make a 450g solution with a mass by mass concentration of 7%, how much salt and water do you need to mix?

Yuri [45]

Explanation:

The given data is:

The mass% of a solution is 7.

Mass of solution =450g

The mass of salt required can be calculated as shown below:

$mass percent =(mass of solute/mass of solution )x100\\$

Substitute the given values in this formula to get the mass of solute that is salt:

$mass percent =(mass of solute/mass of solution )x100\\\\7=\frac{mass of salt}{450g} x100\\=>mass of salt=7x450g /100\\mass of salt=31.5g$

Mass of salt =31.5g

Mass of solvent that is water = 450g-31.5g=418.5g

4 0

3 years ago

(i) 1s2 2s2 2p6 3s1 (ii) 1s2 2s2 2p6 3s2 (iii) 1s2 2s2 2p6 3s2 3p1 (iv) 1s2 2s2 2p6 3s2 3p4 (v) 1s2 2s2 2p6 3s2 3p5 The electron

astra-53 [7]

Answer:

Explanation:

Firstly let’s list the names of the atoms

1. Sodium

2. Magnesium

3. Aluminum

4. Oxygen

5.Chlorine

Generally, anions have greater electron affinity than cations. Hence, they have more positive values for this electron affinity. This means that the higher the electron affinity, the greater its positive value

Electron affinity increases across a period. Thus, it is expected that chlorine has the highest value

4 0

3 years ago

The gram formula mass of a compound is 48 grams. The mass of 1.0 moles of this compound is

ehidna [41]

The gram formula mass is Molar mass. The mass of 1.0 moles is :
3) 48.0 g

3 0

4 years ago

Which of the following are common characteristics of nuclei of the same element?

DENIUS [597]

Answer:

Explanation:

the Same number of proton

8 0

2 years ago