All metals are minerals <br>a. true <br>b. false

The bones in the front limbs of many mammals are similar in their structures

Olenka [21]

Is this a true or false? If so believe itd be true<span />

5 0

3 years ago

Please help!!!!! ASAP I WILL GIVE BRAINLIEST IF CORRECT

kupik [55]

the nucleus represented by x is 56

7 0

3 years ago

Baking soda (sodium bicarbonate) is often used to neutralize spills of acids on the benchtop of the laboratory. What mass of sod

FrozenT [24]

Answer : The mass of $NaHCO_3$ needed is, 12.7 grams.

Explanation :

First we have to calculate the moles of HCl.

$\text{Moles of }HCl=\text{Concentration of }HCl\times \text{Volume of }HCl$

$\text{Moles of }HCl=6.01M\times 0.0252L=0.151mol$

Now we have to calculate the moles of $NaHCO_3$

The balanced neutralization reaction will be:

$HCl+NaHCO_3\rightarrow NaCl+H_2O+CO_2$

From the balanced chemical reaction we conclude that,

As, 1 mole of HCl neutralizes by 1 mole of $NaHCO_3$

So, 0.151 mole of HCl neutralizes by 0.151 mole of $NaHCO_3$

Now we have to calculate the mass of $NaHCO_3$

$\text{ Mass of }NaHCO_3=\text{ Moles of }NaHCO_3\times \text{ Molar mass of }NaHCO_3$

Molar mass of $NaHCO_3$ = 84 g/mole

$\text{ Mass of }NaHCO_3=(0.151moles)\times (84g/mole)=12.7g$

Therefore, the mass of $NaHCO_3$ needed is, 12.7 grams.

7 0

3 years ago

1.) A building has two lifts. One lift stops only at even numbered floors and the other stops only at odd numbered floors. What

dlinn [17]

The answers for the following questions are given below

the advantage in operating the lifts in this manner is: (B). It reduces the time taken to reach the required floor, as the lifts can move faster.
The most likely reason for this is: (A). Plants breathe very little during the winter months.
Solution Q likely to do: (D). (Nothing can be said with just the given information.)

<h3>Meaning of Solution</h3>

A solution can be defined as a chemical mixture that is formed by two major components which are known as the solute and the solvent.

A solution based on its components varies in its type and function.

In conclusion, The answers for the following questions are given above.

Learn more about a Solution: brainly.com/question/25326161

#SPJ1

6 0

1 year ago

Which of the following is the most important factor when determining a safe speed?

ladessa [460]

Answer:

Wind, water conditions and currents

Explanation:

To determine a 'safe speed' for your boat, it is very pertinent to take into account the following very important factors: The visibility conditions (fog, mist, rain, darkness) The wind, water conditions and currents. Traffic density, type of vessels in the area and their proximity are also important considerations to take into account.

4 0

3 years ago

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All metals are minerals a. true b. false​

All metals are minerals a. true b. false