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natali 33 [55]
3 years ago
8

What is the mass of a sample containing 1.94 moles of Ca? ______g

Chemistry
2 answers:
Andrej [43]3 years ago
5 0

Answer:

77.8 grams of Ca

Explanation:

umka2103 [35]3 years ago
5 0

Answer:

hello there

Your answer is

77.8 grams of Ca

Hope it’s helps you Buddy

Explanation:

~Zayn

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If a gas sample has a pressure of 30.7 kPa at 0.00*C, by how much does the temperature have to decrease to lower the pressure to
Scrat [10]

Answer:

                      252.68 K  or   -20.46 °C

Explanation:

                    According to Gay-Lussac's Law, "Pressure and Temperature at given volume are directly proportional to each other".

Mathematically,

                                              P₁ / T₁  =  P₂ / T₂   ---- (1)

Data Given:

                  P₁  =  30.7 kPa

                  T₁  =  0.00 °C  =  273.15 K

                  P₂  =  28.4 kPa

                  T₂  =  <u>???</u>

Solving equation for T₂,

                  T₂  =  P₂ T₁ / P₁

Putting values,

                  T₂  =  28.4 kPa × 273.15 K / 30.7 kPa

                  T₂  =  252.68 K  or   -20.46 °C

8 0
3 years ago
Some of the most dangerous conditions occur when temperatures are hovering around _______ degrees fahrenheit, or freezing, when
Olin [163]

Answer:

32 ° F

Explanation:

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3 0
2 years ago
In your own words list the rules for naming hydrocarbons and substituted hydrocarbons. Be detailed in listing all rules includin
Irina18 [472]

Answer :

The basic rules for naming of hydrocarbons are :

First select the longest possible carbon chain.

The longest possible carbon chain should include the carbons of double or triple bonds.

The naming of alkane is done by adding the suffix -ane, alkene by adding the suffix -ene, alkyne by adding the suffix -yne.

The numbering is done in such a way that first carbon of double or triple bond gets the lowest number.

The carbon atoms of the double or triple bond get the preference over the other substituents present in the parent chain.

If two or more similar alkyl groups are present in a compound, the prefixes di-, tri-, tetra- and so on are used to specify the number of times of the alkyl groups in the chain.

8 0
3 years ago
HURRY PLEASE
densk [106]

Answer:

C

Explanation:

on edg

7 0
3 years ago
Look at the diagram. Which shows the correct arrangement of electrons in a hydrogen molecule?
skelet666 [1.2K]
It’s diagram because hydrogen has one proton and you’re not talking about ions so it needs another electron to stable itself
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3 years ago
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