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Softa [21]
3 years ago
15

What type of testing can reveal the precense of blood?

Chemistry
1 answer:
lorasvet [3.4K]3 years ago
3 0

Answer: precipitin test

Explanation:

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To whoever helps me thank you so much have a wonderful day!
Schach [20]

Answer:

N and P

Explanation:

Anion:

When an atom gain the electrons anion is formed. The negative sign shows that atom gain electron because number of electron are greater than protons or we can say that negative charge becomes greater than positive charge.

Cation:

When atom lose electron cation is formed. The atom thus have positive charge because number of positive charge i.e protons are increased are greater than negative charge or electron.

In given problem N and phosphorus both can gain three electrons which means negative charge becomes greater that's why the extra electron gained by atoms are written as -3 and both form anion with charge -3.

while Al form cation with charge +3 Mg form cation with charge +2 and iodine and bromine both form anion with charge of -1.

8 0
3 years ago
Water vapor condenses into a glass of water. The water is then placed in a freezer and changes into ice. What remains consistent
PolarNik [594]
Chemical properties
8 0
3 years ago
An astronaut in her spacesuit weighs 300 lb on earth. What would her weight be on the moon?
Phantasy [73]
She would be 150 on the moon because the moon has half the mass of earth
6 0
3 years ago
Read 2 more answers
What is the formula of sulfurous acid?<br> H2S<br> HSO4<br> H2SO4<br> H2SO3
Bas_tet [7]

The correct answer is H2SO3 I took the assignment already


6 0
4 years ago
Which of the following is a mixture of substances?
Stels [109]

Answer:

the answer is c

b/c contain more than one element

7 0
3 years ago
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