All categories

3 years ago

Is Calcium, Ca a metal or a non-metal? Explain your thinking.

Chemistry

2 answers:

Anika [276]3 years ago

8 0

Answer:

Calcium is a metal, particularly,an alkali earth metal

Explanation:

It donates two electrons to form cation

Ca+2e––>Ca^2+

guapka [62]3 years ago

6 0

Calcium is a metal. It is an alkaline earth metal. Calcium is a metal because it is in group 2 which makes it an alkaline earth metal and a powerful reducing agent that loves to react with nonmetals especially powerful oxidizing agents like fluorine and chlorine.

You might be interested in

Answer this correctly, only sincere answers please. I really need help. I will do all I can to make someone answer this. Thanks!

Marrrta [24]

Answer:

See Explanation

Explanation:

Let us recall that;

[H^+] [OH^-] = 1 * 10^-14

Where;

[OH^-] = 1 x 10^-11

Then;

[H^+] = 1 * 10^-14/1 x 10^-11

[H^+] = 1 * 10^-3

pH = -log [H^+]

pH = -log(1 * 10^-3)

pH = 3

Also;

pH + pOH = 14

pOH = 14 - pH

pOH = 14 -3

pOH = 11

8 0

3 years ago

What type of circuit is illustrated?

Black_prince [1.1K]

I believe it's B: series circuit

good luck

6 0

3 years ago

Read 2 more answers

How many moles of carbon are in the sample?

jeka94

????????????????????????????????????????????????????

5 0

3 years ago

The combustion of 0.374 kg of methane in the presence of excess oxygen produces 0.983 kg of carbon dioxide. What is the percent

anyanavicka [17]

Assuming that the combustion formula is
CH4 + 2O2 --> 2H2O + CO2<span>,

That means for every 1 molecule of methane(CH4) there will be one molecule of carbon dioxide(</span>CO2) produced. Methane molecular weight 16, carbon dioxide molecular weight is 44. Then the percent yield should be:
1 * (0.374/ 16) /(0.983/44)= 0.374*44/ 0.983 * 16= 104.6%

You sure the number is correct? Percent yield should not exceed 100%

5 0

4 years ago

Part A What are plate boundaries at which lithospheric plates that a) move toward each other, b) move past each other, and c) mo

Alex787 [66]

Answer:

a. Convergent boundary

b. Transform boundary

c. Divergent boundary

Explanation:

Convergent boundary are boundary where tectonic plates collide with each other. This kind of boundary might involve a collision between continental and oceanic plates, continental and continental plates and oceanic and oceanic plates. Generally, convergent boundary are regions for mountainous structures . Example of mountain formed through convergence are mountain Everest and Himalayas .

Transform boundary are boundary where tectonic plates move past each other . This kind of boundary is responsible for the creation of Extensive Fault like the San Andrea Fault.

Divergent boundary are boundary where tectonic plates move away from each other. The diverging movements brings about oceanic ridges. The mid oceanic ridges is where magma rises to the surface to form a new crust. The up welling of this magma causes further separation of this plates.

The picture above illustrate convergent, divergent and transform boundary.

4 0

4 years ago