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skad [1K]
3 years ago
8

Propiedades Químicas del elemento Astato. por favor es urgente!

Chemistry
1 answer:
Zarrin [17]3 years ago
4 0
I'm not to sure but try soy
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gulaghasi [49]
The excretory system is how you excrete waste from your body, including bladder, anus, and kidneys
6 0
3 years ago
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Can someone explain the steps for balancing chemical equations in depth?
m_a_m_a [10]

Answer:

Steps explained below

Explanation:

To explain balancing of chemical equations, I will make use of an example equation where Hydrogen and oxygen react to form water.

H2 + O2 = H2O

Now, the equation I've listed above is an unbalanced chemical equation. It can be balanced by the following steps;

Step 1: Identify the elements on both the left Hand side and the right hand side.

In this case;

on the left hand side, we have H and O.

On the right hand side, we have H and I also.

Step 2: Identify the number of atoms of each element on both the left and right hand sides.

On the left, H has 2 atoms and O has 2 atoms.

On the right, H has 2 atoms and O has 1 atom.

Step 3: For the equation to be balanced, the number of atoms of each element on the right and left hand side must be the same.

Thus,

O on the left hand side has 2 atoms but on the right hand side it has 1 atom. Thus, we will multiply O on the right by 2 to balance what we have on the left.

So, we now have;

H2 + O2 = 2H2O

Step 4: Check equation: We now have;

H2 + O2 = 2H2O

Our left hand side remains 2 atoms of H and 2 atoms of O. But on the right, we now have;

2 atoms O and 4 atoms of H.

Which means atoms of H is not balanced with the left side.

Step 5: rebalance equation: To rebalance, we multiply H on the left by 2 to give us 2 × 2 = 4 atoms.

Thus, we now have;

2H2 + O2 = 2H2O

3 0
2 years ago
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Classify each of these compounds as a Brønsted-Lowry acid, a Brønsted-Lowry base, or neither.
chubhunter [2.5K]

Answer:

Brønsted-Lowry acid : H2SO4, HF, HNO2

Brønsted-Lowry Base : NH3, C3H7NH2, CH3)3N

Neither : NaBr, CCl4

Explanation:

8 0
3 years ago
In which sample of water do the water particles have more energy: 5 grams of ice cubes at -10 degrees Celsius or 5 grams of liqu
Ivenika [448]
Higher temperature = higher energy. In water it is a liquid as the particles have more energy so vibrate and are further away from each other.
6 0
3 years ago
Suppose you needed a 0.0250 M sodium thiosulfate solution to conduct 6 titrations. Explain how you would make up this solution u
AysviL [449]

Explanation:

According to the law of dilution,

       M_{1}V_{1} = M_{2}V_{2}

The given data is as follows.

   M_{1} = 0.4782,     V_{1} = ?

    M_{2} = 0.025 ,    V_{2} = 250 mL

Hence, we will calculate the value of V_{1} as follows.

              V_{1} = \frac{M_{2} \times V_{2}}{M_{1}}

                          = \frac{0.025 \times 250}{0.4782}

                          = 13.07

Thus, we can conclude that we need 13.07 mL 0.4782 M sodium thiosulfate solution using pipette.

4 0
3 years ago
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