4. How many weeks are equal to 2.94 x 10 to the power of 6 minutes?

Name two states where only minor damage as a result of earthquake activity is expected

Romashka [77]

Answer:

San Francisco and Los Angeles

Explanation:

The San Andreas Fault is the sliding boundary between the Pacific Plate and the North American Plate. It slices California in two from Cape Mendocino to the Mexican border. San Diego, Los Angeles and Big Sur are on the Pacific Plate. San Francisco, Sacramento and the Sierra Nevada are on the North American Plate.

6 0

4 years ago

PLX HELP ASAP

oee [108]

Answer:

B) 10.1g

Explanation:

3 0

3 years ago

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Which element in period 4 would have chemical properties similar to magnesium? 7. which metalloids would have chemical propertie

azamat

The only solution you'll need to have for this problem is a periodic table. The columns in the table are called groups, and they are number from the left to the right starting with 1. The rows in the table are called periods which are numbered from the top to bottom starting with 1.

6. Elements that belong to the same group portray similar chemical properties. Therefore, the element in period 4 which is also in group 2 is <em>Calcium (Ca)</em>.

7. The elements that are striked through with the red slanting lines are the metalloids. All the elements to the left of the metalloids are metals. All the elements to the right are nonmetals. Bromine has a symbol of Br. Since At is a metalloid and located in the same group with Br, the <em>answer is Astatine (At).</em>

8. Tin has the chemical symbol of Sn. The nonmetal that is located in the same group is <em>Carbon (C)</em>.

9. All the elements in period 6 would have similar properties. The answers could be: <em>Phosphorus (P), Arsenic (As), Antimony (Sb) and Bismuth (Bi)</em>.

10. Period is row 1 and group 18 is the last column. <em>The answer is Helium (He).</em>

5 0

3 years ago

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Which of these events is caused by contact forces?

harkovskaia [24]

Earthquakes along the San Andreas fault in California.

<u>Explanation</u>:

When the two plates collide with each other, earthquakes occur. The contact between them makes this earthquake possible. The contact forces are responsible for the earthquakes as there is contact between two plates.

The gravitational force is a force that is responsible for elevated tides happening on the east coast or the Jupiter's moons to remain in orbit. But this is not a contact force as there is no contact between them

Moreover, Without any contact, the magnetic force is a non-contact as it attracts the pins from a distance.

3 0

3 years ago

If 9.71 mL of 0.252 KOH is used to complete titrate 15.0 mL of HCL , how many moles of HCL are in the solution ?

Andreas93 [3]

<h3>Answer:</h3>

0.00245 moles of HCl

<h3>Explanation:</h3>

We are given;

Volume of KOH = 9.71 mL

Molarity of KOH = 0.252 M

Volume of HCl = 15.0 mL

We are required to determine the number of moles of HCl

<h3>Step 1: Write the balanced equation for the reaction</h3>

The reaction between HCl and KOH is given by;

KOH(aq) + HCl(aq) → KCl(aq) + H₂O(l)

<h3>Step 2: Calculating the number of moles of KOH</h3>

Molarity = Moles ÷ Volume

Rearranging the formula;

Moles = Molarity × Volume

= 0.252 M × 0.00971 L

= 0.00245 moles

<h3>Step 3: Moles of HCl </h3>

From the equation, 1 mole of KOH reacts with 1 mole of HCl

Therefore, the mole ratio of KOH : HCl is 1 : 1

Thus,

Moles of HCl will be 0.00245 moles

Therefore, there are 0.00245 moles of HCl in the solution.

7 0

3 years ago