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Leona [35]
4 years ago
15

Which would most likely cause a person to produce antibodies?

Chemistry
2 answers:
rosijanka [135]4 years ago
7 0

Answer:

receiving a vaccination

Explanation:

Drupady [299]4 years ago
6 0

Answer:A is the answer to ur question

Explanation:

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The diagram shows the electron configuration of an atom of an element for the electrons in the s and p orbitals.
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Since there are 6 valence electrons, this belongs in the same column as Oxygen.  In fact, this is a diagram of a neutral oxygen atom with 8 total electrons.

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Which or these equations is balanced H2SO4 + 2Al > Al2(SO4)3 + H2 or 2KCl + Pb(NO3)2 > 2KNO3 + PbCl2
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Balancing of chemical equation is essential because of the law of conservation of mass, which states that the mass of a system can not be created or removed.

The second equation is balanced

2KCl_(_a_q_) +Pb(NO_3)_2_(_a_q_) ==> 2KNO_3_(-a_q_) + PbCl_2(_a_q_)

This is because the number of elements of each atom in the product side equal the number of elements of each atom on the reactant side.

The first equation is not balanced

H_2SO_4 _(_a_q) + 2Al_(_s_) ==> Al(SO_4)_3_(_a_q_) + H_2_(_g_)

This is because there is 1 molecule of SO_4^{-2} on reactant side as compared to 3 molecules of SO_4^{-2}

To balance the equation we add a coefficient of 3 on sulphuric acid (H_2SO_4) and a coefficient of 3 on hydrogen (H_2)

3H_2SO_4_(_a_q_) + 2Al_(_s_) ==> Al(SO_4)_3_(_a_q_) + 3H_2_(_g_)

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4 years ago
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is to examine that whether the other variables causes a change in another. The experimental setup of controlled experiments are designed to test the hypotheses. ... It allows to change more than one variable, on the condition that all other variables are controlled.

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