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3 years ago

What is the bond between Ca and Cl

1 answer:

4 0

ionic bond is formed between ca and cl forming molecule cacl2 ca has 2 velancy and cl has one velancy (ca has 2 electrons in its outer most shell while cl has 1 electron vecancy in its outermost shell). So ca would make bond with 2 cl atoms

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A mixture of three gases has a total pressure of 365 mmHg. Gas A contributes a pressure of 53 mmHg and gas B contributes a press

adoni [48]

This one is the easiest law, but you would take 53 and 185 and add them together to get 235 and then you will minus 235 and 365 and the answer you are looking for is 130 mmHg! Hopefully this helped you!!

5 0

2 years ago

Suppose much of an old forest will be used for farmland. A certain portion of the land will be set aside as wildlife habitat. Yo

WITCHER [35]

Answer:

A certain portion of the land will be set aside as wildlife habitat

7 0

2 years ago

Why is carbon dioxide called a gas and not vapour?

Afina-wow [57]

Explanation:

CO2 is called as gas because it exist in single thermodynamics state i.e CO exist in gases state only at room temperature.

5 0

3 years ago

PLEASE SHOW YOUR WORK!!

Rom4ik [11]

Answer:

6. 355.1 g of Na₂SO₄ can be formed.

7. 313 g of LiNO₃ were needed

Explanation:

<u>Excersise 6</u>.

The reaction is: 2 NaOH + H₂SO₄ --> 2 H₂O + Na₂SO₄

2 moles of sodium hydroxide react with 1 mol of sulfuric acid to produce 2 moles of water and 1 mol of sodium sulfate.

If we were noticed that the acid is in excess, we assume the NaOH as the limiting reactant. Let's convert the mass to moles (mass / molar mass)

200 g / 40 g/mol = 5 moles.

Now we apply a rule of three with the ratio in the reaction, 2:1

2 moles of NaOH produce 1 mol of sodium sulfate.

5 moles of NaOH would produce (5 .1)/2 = 2.5 moles

Let's convert these moles to mass (mol . molar mass)

2.5 mol . 142.06 g/mol = 355.1 g

<u>Excersise 7.</u>

The reaction is:

Pb(SO₄)₂+ 4 LiNO₃ → Pb(NO₃)₄ + 2Li₂SO₄

As we assume that we have an adequate amount of lead (IV) sulfate, the limiting reactant is the lithium nitrate.

Let's convert the mass to moles (mass / molar mass)

250 g / 109.94 g/mol = 2.27 moles

Let's make a rule of three. Ratio is 2:4.

2 moles of lithium sulfate were produced by 4 moles of lithium nitrate

2.27 moles of Li₂SO₄ would have been produced by ( 2.27 .4) / 2 = 4.54 moles.

Let's convert these moles to mass (mol . molar mass)

4.54 mol . 68.94 g/mol = 313 g

5 0

3 years ago

Write the nuclear equation for the beta decay Ni-60

viktelen [127]

$^6^0_2_7CO\;\rightarrow\;^6^0_2_8Ni\;+\;^0_-1e$ is the nuclear equation for the beta decay Ni-60.

<h3>What is beta decay?</h3>

Beta-decay occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other.

The nuclear equation for the beta decay Ni-60

$^6^0_2_7CO\;\rightarrow\;^6^0_2_8Ni\;+\;^0_-1e$

In beta minus (β−) decay, a neutron is converted to a proton, and the process creates an electron and an electron antineutrino; while in beta plus (β+) decay, a proton is converted to a neutron and the process creates a positron and an electron neutrino. β+ decay is also known as positron emission.

Hence, $^6^0_2_7CO\;\rightarrow\;^6^0_2_8Ni\;+\;^0_-1e$ is the nuclear equation for the beta decay Ni-60.

Learn more about the beta decay here:

brainly.com/question/25455333

#SPJ1

8 0

2 years ago