Ask question

Ask question

All categories

3 years ago

5

Plz answer I need the answer What is the goal of technology?

2 answers:

Sloan [31]3 years ago

7 0

I think the answer is C

iVinArrow [24]3 years ago

6 0

Answer:

The goal is to improve the way which we live,to make our lives easier by reducing paper work.It is important because technology helps keep our information safe.

You might be interested in

Which state of matter is Na OH(s)

Shalnov [3]

Explanation:

SOLID

Sodium hydroxide exists in the solid phase at room temperature. You would find it in the lab as hemispherical white solid pellets. The phase of a substance depends on temperature and pressure. As you heat a solid, it will melt and change to the liquid phase.

4 0

2 years ago

Based on the results of this lab, write a short paragraph that summarizes how to distinguish physical changes from chemical chan

qwelly [4]

Answer:

what were the results

Explanation:

3 0

3 years ago

Read 3 more answers

Gasoline and kerosene (specific gravity 0.820) are blended to obtain a mixture with a specific gravity of 0.770. Calculate the v

Dmitrij [34]

Answer:

The volumetric ratio is 0,71

Explanation:

Let's begin with the equation:

$Db = Mb/Vb$ (1)

Where:

Db: Blend Density, Mb: Blend Mass and Vb: Blend Volume

And we know: $Vb = Vg + Vk$ (2)

Where:

Vg: Gasoline Volume and Vk: Kerosene Volume

Therefore replacing (2) into (1):

$Db = (Mg + Mk) / (Vg + Vk)$

$Db = (Dg * Vg + Dk * Vk)/(Vg + Vk)$ (3)

Where:

Dg: Gasoline Density and Dk: Kerosene Density

The specific gravity is defined as:

$SG = Substance Density / Reference Density$

Therefore:

$Db = SGb * Dref\\Dg = SGg * Dref\\Dk = SGk * Dref$

Where:

Dref: Reference Density

SGb: Blend Specific Gravity

SGg: Gasoline Specific Gravity (which is 0.7 approximately)

SGk: Kerosene Specific Gravity

Replacing these equations into (3) we get:

$SGb * Dref = (SGg * Dref * Vg + SGk * Dref * Vk)/(Vg + Vk)$

$SGb * Dref = Dref * (SGg * Vg + SGk * Vk)/(Vg + Vk)$

$SGb = (SGg * Vg + SGk * Vk)/(Vg + Vk)$

$SGb * (Vg + Vk) = SGg * Vg + SGk * Vk$

$SGb * Vg + SGb* Vk = SGg * Vg + SGk * Vk$

Replacing with the Specific Gravity data, we obtain:

$0.77 * Vg + 0.77 * Vk = 0.7 * Vg + 0.82 * Vk$

$0.77 * Vg - 0.7 * Vg = 0.82 * Vk - 0.77 * Vk$

$0.07 * Vg = 0.05 * Vk$

$Vg/Vk = 0.05/0.07$

$Vg/Vk = 0.71$

8 0

2 years ago

describe some acidic oxides that can be prepared by the thermal decomposition of nitrates and carbonates

ale4655 [162]

The oxidation is the best thing

7 0

3 years ago

Indicate the pH value as pH < 7, pH = 7 or PH > 7 for each of the following substances.

Galina-37 [17]

Explanation:

a) PH>7

b)PH=7

c)PH>7

d) PH>7

5 0

3 years ago