Can some help me please?

Which statement is accurate about the number of genes in different species of living things? A. All living things have about the

Brut [27]

Answer is D you welcome

6 0

3 years ago

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Acceleration involves a change in A. time B. direction C. speed D. either b or c

deff fn [24]

Answer:

C

Explanation:

Think about it. If you accelerate, you go faster. This means you change speed.

5 0

3 years ago

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if an apple has eight seeds and one apple has a mass of 0.2kg,how many apple seeds are in 14 kg apple

poizon [28]

14kg=Number of Apples*.2kg
70 Apples *8 Apples each=560 seeds

8 0

3 years ago

In each row check off the boxes that apply to the highlighted reactant. reaction The highlighted reactant acts as a... (check al

tekilochka [14]

The given question is incomplete. The complete question is :

In each row check off the boxes that apply to the underlined reactant. The underlined reactant acts as a... (check all that apply)

1. $HCH_3CO_2(aq)+NH_3(aq)\rightarrow CH_3COO^-(aq)+NH_4^+(aq)$

here underlined is $HCH_3CO_2$

A. Brønsted-Lowry acid

B. Brønsted-Lowry base

C. Lewis acid

D. Lewis base

2. $BH_3(aq)+NH_3(aq)\rightarrow BH_3NH_3(aq)$

Here underlined is $NH_3$

A. Brønsted-Lowry acid

B. Brønsted-Lowry base

C. Lewis acid

D. Lewis base

3. $HNO_2(aq)+C_2H_5NH_2(aq)\rightarrow NO_2^-(aq) + C_2H_5NH_3^+(aq)$

Here underlined is $C_2H_5NH_2$

A. Brønsted-Lowry acid

B. Brønsted-Lowry base

C. Lewis acid

D. Lewis base

Answer: 1. Brønsted-Lowry acid

2. Lewis base

3. Brønsted-Lowry base

Explanation:

According to the Bronsted Lowry conjugate acid-base theory, an acid is defined as a substance which donates protons and a base is defined as a substance which accepts protons.

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

1. $HCH_3CO_2(aq)+NH_3(aq)\rightarrow CH_3CO^{2-}(aq)+NH_4^+aq)$

As $HCH_3CO_2(aq)$ is donating a proton , it acts as a bronsted acid.

2. $BH_3(aq)+NH_3(aq)\rightarrow BH_3NH_3(aq)$

As $NH_3$ contains a lone pair of electron on nitrogen , it can easily donate electrons to $BH_3$ and act as lewi base.

3. $HNO_2(aq)+C_2H_5NH_2(aq)\rightarrow NO_2^-(aq) + C_2H_5NH_3^+(aq)$

As $C_2H_5NH_2(aq)$ is accepting a proton , it acts as a bronsted base.

7 0

3 years ago

Hey can I please get help I do not understand this

krok68 [10]

There will be a 25% chance that the plant will have wrinkled seed.

Explanation:

The round seeds are dominant and can be considered homozygous for round seeds will have alleles RR

The wrinkled seeds are recessive and can be considered homozygous for wrinkled seeds will have alleles rr

When these are crossed

r r

R Rr Rr

R Rr Rr All the progeny are Heterozygous round seed

When These are crossed with plant heterozygous for round seeds

RrXRr

R r

R RR Rr

r Rr rr

The genotype ratio is 1:2:1 1 homozygous round, 2 heterozygous round, 1 homozygous wrinkled.

The phenotype ratio is 3:1 3 round and 1 wrinkled

Hence 25 % of the plants will have wrinkled seeds

3 0

3 years ago