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____ [38]
3 years ago
13

Can someone help me with this please....​

Chemistry
1 answer:
Anna007 [38]3 years ago
6 0

a. vinegar

b. Mineral deficiencies in the body can make joint pain worse. Because Vinegar contains the calcium, magnesium, potassium, and phosphorus your body needs, it helps as a supplement and therefore reduces pain.

1. in making fertilisers which are chemical compounds or salts to increase fertility of soil.

2. lithium hydroxide is used in space because of its high absorption of carbon dioxide and the small amount of heat produce by the reaction.

3. Acid rain has a lower pH than "normal" rain . Rain is naturally somewhat acidic with a pH between 5.0-5.5 typically. Acid rain has a pH that is below this: 4.4-4.2

4. lemon juice is an anti bacterial and a good germicidal solution which helps in removing the unseen bacteria on our hands.

<h3>Hope this helps :)</h3>
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a baseball player hits a baseball with a bat.The mass of the ball is 0.25kg.The ball accelerates at 200m/s2
34kurt

Answer:

50N

Explanation:

Force (N) = mass (kg) × acceleration (m/s²)

0.25kg times 200m/s² = 50N

5 0
3 years ago
Order the levels of organization from the smallest (1) to the largest (4).
yKpoI14uk [10]

Answer:

cells=1

organ=3

organ system=4

tissue=2

Explanation:

i just did the question right now and i got them all correct.

3 0
4 years ago
A defibrillator delivers about 300 joules per shock calculate the number of calories
Tanya [424]

Answer:- 71.7 calories

Solution:- it is a unit conversion problem where we need to convert joules into calories.

The unit conversion for these energy units is:

1 calorie = 4.184 joule

The given energy is 300 joules and has to be converted to calories. We will show the set up using dimensional analysis.

300joules(\frac{1calorie}{4.184joules})

= 71.7 calories

So, the energy in calories is 71.7.


4 0
3 years ago
Zn+HCI = ZnCI2 + H2​
anygoal [31]
<h3>Answer:</h3>

#1. Type of reaction: Single displacement

#2. Balanced equation: Zn + 2HCI → ZnCI₂ + H₂

<h3>Explanation:</h3>

<u>We are given;</u>

  • The equation; Zn+HCI → ZnCI₂ + H₂

Assuming we are required to identify the type of reaction and balance it;​

  • The reaction is a <u>single displacement reaction.</u>
  • Zinc metal displaces hydrogen atom from hydrochloric acid to form a salt, zinc chloride and hydrogen gas.
  • To balance the equation, we put coefficients on the reactants and products for the number of atoms of each element to be equal on both sides of the equation.
  • In this case, the appropriate coefficients are 1, 2, 1 and 1
  • Therefore, the balanced equation will be;

Zn + 2HCI → ZnCI₂ + H₂

4 0
3 years ago
I need to know what is oxidized and what is reduced.
pishuonlain [190]

Answer:

1. Reduction: O₂ ; Oxidation: S

2. Reduction: F ; Oxidation: Al

3. Reduction: Zn ; Oxidation: H

Explanation:

Determine the oxidation state of each element:

2 CoS → Cobalt acts with +2, S with -2

O₂ is at ground state. In ground state the elements has oxidation state of 0.

In CoO, the oxygen acts with -2

The oxidation state has decreased; oxygen was reduced.

In SO₂, sulfur acts with +4; oxidation state has increased, so S has been oxidized.

2. Both reactants are at ground state.

In AlF₃  Al has oxidation state of +3 and F, -1

Al increased the oxidation state → oxidation

F decreased the oxidation state → reduction

3. Hydrogen has 0 as oxidation state. In water, H has +1

It was increased → oxidation

Zn acts with +2, in the zinc oxide. As we have elemental Zn, the oxidation state is 0; it has decreased → reduction

4 0
3 years ago
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