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3 years ago

Using the reactivity series shown in the handbook, tell whether the following reactions

1 answer:

6 0

The possibility of metals replacing each other is dependent on the relative positions of the metals in the activity series.

The activity series is an arrangement of elements in order of decreasing reactivity. The elements that are higher in the series can displace the elements that are lower in the series.

Before we make a decision in each case, we must consider what metal is lower or higher in the series;

Between Na and K, Na is lower in the series so the answer is no
Between Co and Cu, Co is higher than Cu in the series so the answer is yes
Since Zn and Zn^2+ are just a specie and its ion, the answer is no.
Since Ba is higher than Ni, Ni can not replace Ba so the answer is no

Learn more: brainly.com/question/24058474

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When balanced, which equations would have the coefficient 3 in front of the first set of atoms? Check all that apply. A. AgBr +

masha68 [24]

<span>Balancing the choices, we have as follows:

A. 3AgBr + GaPO4 → Ag3PO4 +GaBr3

B. 3H2SO4 + 2B(OH)3 → B2(SO4)3 + 6H2O

C. Fe + 2AgNO3 → Fe(NO3)2 + 2Ag

D. C2H4O2 +2O2 → 2CO2 + 2H2O

Therefore, the correct answers are option A and B. Hope this answers the question. Have a nice day.</span>

3 0

4 years ago

Distance divided by time

son4ous [18]

150÷3=50

350÷4=87.5

(50+87.5)÷2

137.5÷2

=68.75

4 0

3 years ago

Al + 02 --> Al 2 0 3

nata0808 [166]

The coefficient for aluminium is 4.

Explanation:

We have the following chemical reaction:

Al + O₂ → Al₂O₃

In order to balance the chemical equation the number of the atoms entering the reaction should be equal to the number of atoms leaving the reaction.

2 Al + 3/2 O₂ → Al₂O₃

However we need integer numbers so we multiply everything with 2.

4 Al + 3 O₂ → 2 Al₂O₃

The coefficient for aluminium is 4.

Learn more:

about balancing chemical equations

brainly.com/question/8062886

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#learnwithBrainly

5 0

3 years ago

Give an explanation of how mass determines (or affects) the force of gravity.

Alexxandr [17]

Mass determines the force of gravity like this:

If an object weight a lot it will affect the mass and gravity pulls on the object lots more when an object has lots of weight/mass.

Example: An airplane. An airplane probably weighs a ton. That is why gravity pushes it down in order for the plane to go down when it is landing or else it would be flying but never coming down. But the gravity pulling down the airplane is still there so the airplane has to be pulling the steer up in order for it to be heading straight.

Glad to help! :)

7 0

3 years ago

How many moles of solute are in 250 mL of 2.0 M CaCl2? How many grams of CaCl2 is<br> this?

almond37 [142]

Answer:The solution contains 0.50 mol or 55 g of CaCl2 . You know there are 2.0 mol of CaCl2 in 1 L of solution. (40.08 + 2 × 35.45) g=(40.08 + 70.90)

g=110.98 g

Explanation:

My I please have brainliest

5 0

3 years ago