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vova2212 [387]
3 years ago
10

Which of the following elements is the most reactive metal?

Chemistry
2 answers:
aivan3 [116]3 years ago
7 0
D) Lithium
lithium is an alkali metal. alkali metals are very very reactive
Gennadij [26K]3 years ago
3 0

Answer:

D

Explanation:

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2 H2 + 2 NO → N2 + 2 H2O the observed rate expression, under some conditions, is: rate = k[NO]2 Which of the following mechanism
guapka [62]

Explanation:

Rate law is defined as the rate of a reaction is directly proportional to the concentration of reactants at constant temperature.

               Rate \propto [\text{concentration of reactant}]^{n}

                                  = k [\text{concentration of reactant}]^{n}

where,     k = rate constant

                n = order of reaction

For the given reaction, 2H_{2} + 2NO \rightarrow N_{2} + 2H_{2}O

Hence, its rate will be as follows.

                   Rate = k[H_{2}][NO]

Also, it is known that slowest step in a chemical reaction is the rate determining step.

Hence, for the given rate law correct reaction is as follows.

Step 1 : H_{2} + NO \rightarrow N + H_{2}O (slow)

Balancing this equation it becomes H_{2} + 2NO \rightarrow N_{2}O + H_{2}O (slow)

Step 2: N_{2}O + H_{2} \rightarrow N_{2} + H_{2}O (fast)

4 0
3 years ago
2H2 + O2 → 2H2O
Sophie [7]

Answer:

- One mole of oxygen was used in this reaction.

- Two moles of water were produced from this reaction.

Explanation:

In addition: -<em> </em><em>T</em><em>w</em><em>o</em><em> </em><em>m</em><em>o</em><em>l</em><em>e</em><em>s</em><em> </em><em>o</em><em>f</em><em> </em><em>h</em><em>y</em><em>d</em><em>r</em><em>o</em><em>g</em><em>e</em><em>n</em><em> </em><em>w</em><em>e</em><em>r</em><em>e</em><em> </em><em>u</em><em>s</em><em>e</em><em>d</em><em>.</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em>

4 0
3 years ago
Magnetic potential energy is dependent on
inysia [295]

Answer:

a

Explanation:

7 0
3 years ago
HOW CAN YOU TELL THAT A CHEMICAL HABGE HAS OCCURRED. PLZ HELP
denpristay [2]

That is choice A.

The products are different from the reactants.

This may be easy to see - for example when one of the products is precipitated, like when you add BaCL2 to Na2SO4.  The BaSO4 formed is insoluble in water and appears as a white precipitate.

3 0
4 years ago
Tenisha solved the equation below by graphing a system of equations. help!!!!!
Kruka [31]

Answer:

(1.0, 1.4)

Explanation:

Graph the two equations \log_3 5x and \log_5 (2x+8). The point of intersection is the solution to the system of equations.

Graph on Desmos:

\log_3 5x\implies \text{Red},\\\log_5 (2x+8)\implies \text{Blue}

4 0
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