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11111nata11111 [884]
3 years ago
5

How do you write the electron notation and orbital fill notation for calcium?

Chemistry
1 answer:
AnnZ [28]3 years ago
6 0
1s2 2s2 2p6 3s2 3p6 4s2
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Molar mass of carbon
Taya2010 [7]

Answer: 12.011g/mol

Explanation: The molar mass of any element is usually stated at the bottom of periodic table (depending of your table anyways). Remember that the periodic table speaks to you in moles so every molar mass under the element is for 1 mole. By this I mean for example, 1 mole of Carbon = 12.011g of Carbon.

7 0
4 years ago
Simplify the ratio 32:21 in its simplest form ..show your working​
makvit [3.9K]

Answer:

32/21

Explanation:

Find the GCD (or HCF) of numerator and denominator. GCD of 32 and 21 is 1.

32 ÷ 121 ÷ 1.

Reduced fraction: 3221. Therefore, 32/21 simplified to lowest terms is 32/21.

8 0
3 years ago
How much heat will be absorbed by a 63.1 g piece of aluminum (specific heat = 0.930 J/g・°C) as it changes temperature from 23.0°
cluponka [151]

Answer:

Q=2582J=2.58kJ

Explanation:

Hello,

In this case, for us to compute the absorbed heat, we apply the following equation:

Q=m_{Al}Cp_{Al}(T_2-T_1)

Whereas we use the mass, specific heat and temperature change for the piece of aluminium, thus, we obtain:

Q=63.1g*0.930\frac{J}{g*\°C}*(67.0-23.0)\°C\\ \\Q=2582J=2.58kJ

It is positive as the heat is entering, therefore the temperature raises.

Best regards.

4 0
3 years ago
Are pure substances homogeneous or heterogeneous
Svetllana [295]

The answer is homogenous i think

6 0
3 years ago
Which ions combined with chloride ions to form an insoluble compound?
vredina [299]

Answer:

sodium ion

Explanation:

Na^+ + Cl^– >NaCl

8 0
3 years ago
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