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aliya0001 [1]
3 years ago
5

The white Dwarfs are a group of stars that are-

Chemistry
1 answer:
Pavel [41]3 years ago
6 0

Answer: A

Explanation:

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Given that NASA needs 151,200 g of Oxygen (O2) per person for a mission, how many grams of water (H2O) does NASA need to ship to
IgorC [24]

this is so ez,

ok so here what u'll do after u balance the equation:

1. convert grams of oxygen to moles of oxygen.

2. convert moles of oxygen to moles of water

3. convert moles of water to grams of water.

4. bOOm... that's your answer

as follows:

2H2O(l)===>2H2(g)+O2(g)

1. 151200(g)/16(g/mol)=9540 moles of O2

2. 9450 moles of O2 × 2 moles of H2O =18900 moles of H2O

3. 18900 moles of H2O × 10g/mol = 189000g of H2O is required.

6 0
4 years ago
Where would you find the element with least mass?
dexar [7]
C. The lowest mass will be the element in period 1, group 1 (this element is hydrogen)

8 0
3 years ago
What are thermal plasmas?
vitfil [10]
<span>plasmas that reach a temperature equal to their surroundings




----------------------=0uyjgyhjngytfgbhtfgbdc b gdf gb </span>
6 0
3 years ago
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What is wrong with the notation 1s22s22p63s23p63d104s24p2 for germanium (atomic number 32)?
Vaselesa [24]
<span>The notation is not written in the correct order as the 4s subshell should appear before the 3d subshell.
</span>The correct order in an electron configuration would be: 
1s , 2s , 2p , 3s , 3p , 4s , 3d , 4p , 5s , 4d , 5p , 6s , 4f , 5d , 6p ,..
So, for germanium the electronic configuration should be;
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p² 



3 0
3 years ago
What does molecule mean?
Bond [772]

A pure substance, only one type of atom

6 0
3 years ago
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