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almond37 [142]
3 years ago
6

How many protons and neutrons does gallium have?

Chemistry
1 answer:
Phoenix [80]3 years ago
4 0
31 protons 31 electrons and 39 nutrons
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Because the phosphate group and its attachments are either charged or polar, the phospholipid head is blank, which means it has
schepotkina [342]

The phospholipid head is hydrophilic which means it has an affinity for water. And it is true.

<h3>What is phospholipid , its component and how come it is hydrophilic?</h3>
  1. Phospholipid contains of a head and a tail , the head part of phospholipid consist of phosphate group and for further clarification the tail part of phospholipid consist of fatty acids.
  2. As we know already phosphate group that is OH- is negatively charged which clearly which its head is going to be polar .
  3. Since its polar , its hydrophilic. There is a specific function performed by phosphate group that cannot be filled by other compound present simultaneously.
  4. Phosphate group grabs a role to provide space to other compounds too.

To know more about phospholipid visit:

brainly.com/question/14949280

#SPJ4

3 0
1 year ago
A person uses 770 kcal on a long hike. Calculate the energy used for the hike in each of the following energy units.
Pavlova-9 [17]

Explanation:

1 Cal of energy is equivalent to 4.184 Joules.

A.

770Cal of energy = 3221.680 joules

Therefore, 780kCal of energy = 3221680 Joules.

B.

3200000 Joules (in 2 s.f).

C.

I000 joules = 1 kJoule

3221680 joules = 3221.689 kJoules.

D.

3200 kJ (in 2 s.f).

5 0
3 years ago
Velocity may be expressed in which I f the following units?
Dmitry_Shevchenko [17]

velocity is speed and direction so it should be expressed in mph f/s (feet per second) with a direction like North, right, left,

ex) 5mph south

3 0
3 years ago
A sample of carbon tetrachloride (CCl4) contains 3 moles of the substance. How many atoms are there in the sample?
kaheart [24]

Answer:

1.806 × 10²⁴ atoms

Explanation:

To obtain the number of atoms a substance contain, we have to multiply the number of moles in that substance (n) by Avogadro's number, which is 6.02 × 10²³.

According to this question, a sample of carbon tetrachloride (CCl4) contains 3 moles of the substance. The number of atoms in CCl4 is calculated thus:

number of atoms = 3 × 6.02 × 10²³

number of atoms = 18.06 × 10²³

number of atoms = 1.806 × 10²⁴ atoms.

6 0
3 years ago
Pls I need help give away 11 points
Maru [420]

Answer:

The charge is +2

Explanation:

Protons are positive, electrons are negative. 10-8=2.

+2 :)

7 0
3 years ago
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