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Katyanochek1 [597]
3 years ago
9

The symbol Ca-40 denotes that

Chemistry
1 answer:
Roman55 [17]3 years ago
8 0
D. A calcium atom has mass of 40
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2.
kap26 [50]

Answer:

A they share two covalent bonds

8 0
3 years ago
Need help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Valentin [98]
The first one is B because it’s gonna be positive if it’s gaining energy
3 0
3 years ago
List the 5 chemicals with the highest flash point. (In order, staring with the highest)
Volgvan

Answer:

Flash point of Lube Oil is around the 187°C mark, 

Flash point of Biodiesel of 130°C

Flash point of Diesel Ranging from 52° to 96°

8 0
3 years ago
Who made the first periodic table
ale4655 [162]
The other dude is rude wrong

The correct answer is Dmitri Mendeleev
8 0
3 years ago
4. How many moles of atoms are present in 7 moles of sulfuric acid, H₂SO4?
Afina-wow [57]

Answer:

<u>49 moles of atoms</u>

Explanation:

There are 7 individual atoms in each molecule of H2SO4:  (2 hydrogens + 1 sulfur + 4 oxygens).

Therefore, if 7 moles are decomposed, there would be 7 times that amount of individual atoms:

7 x 7 = 49 moles of atoms

4 0
2 years ago
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